MODERN SCHOOL,VAISHALI CLASS XI ASSIGNMENT 2019-20 ...

MODERN SCHOOL,VAISHALI

CLASS XI ASSIGNMENT

2019-20

CHEMISTRY -1

1. Which out of sodium or potassium has higher melting point ?

2. Among alkali metals in aqueous solution, Li+ ion has the lowest mobility. Why?

3. When is a cation highly polarising? Which alkali metal cation has the highest polarising

power?

4. Amongest alkali metals, why is lithium regarded as most strongest reducing agent in

aqueous solutions?

5 Mention the main factor responsible for the anomalous behaviour of lithium.

6. Alkali metals have low ionization energies. Why is it so?

7. Give reasons for the following:

(i) LiCl is more covalent than KCl.

(ii) LiI has lower melting point than LiF.

(iii) MgCl2 is more covalent than NaCl.

8. Be and Mg do not impart colour to the flame.

9. The second ionization enthalpy of an alkaline earth metal is higher than its first ionization

energy. Why is it so ?

10. Why alkali metals and their salts give characteristics colour to the flame?

11. When a alkali metal dissolves in liquid ammonia, the solution acquires different colours.

Explain the reasons for this type of colour change.

12. State as to why

(a) Lithium on being heated in air mainly forms the monoxide and not the peroxide.

(b) Sodium is stored in kerosene oil.

13. Comment on each of the following observations :

(a) The mobilities of alkali metals ions in aqueous solution are : Li+ < Na+ < K+ < Rb+ <

Cs+

(b) Lithium is the only alkali metal to form a nitride directly.

(c) LiF is least soluble among the fluorides of alkali metals.

(d) LiF is more soluble than KF in ethanol.

(e) LiI is more soluble than KI in ethanol.

14. Account for the following:

(i) Alkali metals show only +1 oxidation state.

(ii) The hydroxides of alkali metals are strong bases.

(iii) Na and K impart colour to the flame but Mg does not.

(iv) Li is the best reducing agent in aqueous solution.

15. Why boron halides do not exist as dimers while AlCl3 exists as Al

2Cl

6 ?

16. The +1 oxidation state is more stable than the +3 oxidation state for thallium.

17. Why boron forms electron deficient compounds?

18. Why B-X bond distance in BX3 is shorter than theoretically expected value ?

19. BCl3 is trigonal planar while AlCl

3 is tetrahedral in dimeric state. Explain.


(i) PbX2 is more stable than PbX

4 (X = Cl, Br)

(ii) PbCl4 is less stable than SnCl

4 but PbCl

2 is more stable than SnCl

2.

(iii) PbCl4 is less stable than SnCl

4?

21. Why CCl4 is resistant to hydrolysis but SiCl

4 is readily hydrolysed?

22. CO2 is a gas while SiO

2 is a solid. Explain.

23.Sodium fire in the laboratory should not be extinguished by pouring water.Why?

24.Why are lithium salts commonly hydrated and those of other alkali metal ions usually anhydrous? 25.How can you explain higher stability of BCl3 as compared to TlCl3? 26. Why carbon forms covalent compounds whereas lead forms ionic compounds? 27.The ionic mobility is lowest in which of the following? (i) K (ii) Rb (iii) Li (iv) Na 28.Which one of the following alkali metals gives hydrated salts? (i)Li (ii)Na (iii)K (iv)Cs 29.The best reducing agent in group is ………………………… . 30.Mg is present in chlorophyll .[T/F] 31.Why do alkali metals have low ionisation enthalpy? 32 ………… shows diagonal relationship with magnesium. 33. ……… ions are important for blood clotting. 34.How do you account for the strong reducing power of lithium in aqueous solution? 35.All the s-block elements except Be and ……………… exhibit characterstic flame colour. 36.Percentage of lead in lead pencil is: (i)0 (ii)20 (iii)80 (iv)60 37.Tl+is more stable than Tl3+due to 38.Quartz is extensively used as a piezoelectric material,it contains ……………….. . 39.CO combines with haemoglobin irreversibly to form ……….. …………. . 40.BCl3 exists but BH3 does not.Explain. 41.A mixture of CO and H2 is called…………….. . 42.The aqueous solution of borax is ……………………………….. due to hydrolysis. 43………… is the hybridization of carbon in diamond. 44.Boric acid is a …………………. Acid. 45.Boric acid is a protic acid. [T/F]S

CHEMISTRY -2 1. Which out of sodium or potassium has higher melting point ?

2. Among alkali metals in aqueous solution, Li+ ion has the lowest mobility.

Why?

3. When is a cation highly polarising? Which alkali metal cation has the highest

polarising power?

4. Amongest alkali metals, why is lithium regarded as most strongest reducing

agent in aqueous solutions?

5 Mention the main factor responsible for the anomalous behaviour of lithium.

6. Alkali metals have low ionization energies. Why is it so?

7. Give reasons for the following:

(i) LiCl is more covalent than KCl.

(ii) LiI has lower melting point than LiF.

(iii) MgCl2 is more covalent than NaCl.

8. Be and Mg do not impart colour to the flame.

9. The second ionization enthalpy of an alkaline earth metal is higher than its

first ionization energy. Why is it so ?

10. Why alkali metals and their salts give characteristics colour to the flame?

11. When a alkali metal dissolves in liquid ammonia, the solution acquires

different colours. Explain the reasons for this type of colour change.

12. State as to why

(a) Lithium on being heated in air mainly forms the monoxide and not the

peroxide.

(b) Sodium is stored in kerosene oil.

13. Comment on each of the following observations :

(a) The mobilities of alkali metals ions in aqueous solution are : Li+ < Na+ <

K+ < Rb+ < Cs+

(b) Lithium is the only alkali metal to form a nitride directly.

(c) LiF is least soluble among the fluorides of alkali metals.

(d) LiF is more soluble than KF in ethanol.

(e) LiI is more soluble than KI in ethanol.


(i) Alkali metals show only +1 oxidation state.

(ii) The hydroxides of alkali metals are strong bases.

(iii) Na and K impart colour to the flame but Mg does not.

(iv) Li is the best reducing agent in aqueous solution.

15. Why boron halides do not exist as dimers while AlCl3 exists as Al2Cl6 ?

16. The +1 oxidation state is more stable than the +3 oxidation state for thallium.

17. Why boron forms electron deficient compounds?

18. Why B-X bond distance in BX3 is shorter than theoretically expected value ?

19. BCl3 is trigonal planar while AlCl3 is tetrahedral in dimeric state. Explain.


(i) PbX2 is more stable than PbX4 (X = Cl, Br)

(ii) PbCl4 is less stable than SnCl4 but PbCl2 is more stable than SnCl2.

(iii) PbCl4 is less stable than SnCl4?

21. Why CCl4 is resistant to hydrolysis but SiCl4 is readily hydrolysed?

22. CO2 is a gas while SiO2 is a solid. Explain.

23.Sodium fire in the laboratory should not be extinguished by pouring

water.Why?

24.Why are lithium salts commonly hydrated and those of other alkali metal ions usually anhydrous?

25.How can you explain higher stability of BCl3 as compared to TlCl3? 26. Why carbon forms covalent compounds whereas lead forms ionic compounds? 27.The ionic mobility is lowest in which of the following? (i) K (ii) Rb (iii) Li (iv) Na 28.Which one of the following alkali metals gives hydrated salts? (i)Li (ii)Na (iii)K (iv)Cs 29.The best reducing agent in group is ………………………… . 30.Mg is present in chlorophyll .[T/F] 31.Why do alkali metals have low ionisation enthalpy? 32 ………… shows diagonal relationship with magnesium. 33. ……… ions are important for blood clotting. 34.How do you account for the strong reducing power of lithium in aqueous solution? 35.All the s-block elements except Be and ……………… exhibit characterstic flame colour. 36.Percentage of lead in lead pencil is: (i)0 (ii)20 (iii)80 (iv)60 37.Tl+is more stable than Tl3+due to 38.Quartz is extensively used as a piezoelectric material,it contains ……………….. . 39.CO combines with haemoglobin irreversibly to form ……….. …………. . 40.BCl3 exists but BH3 does not.Explain. 41.A mixture of CO and H2 is called…………….. . 42.The aqueous solution of borax is ……………………………….. due to hydrolysis. 43………… is the hybridization of carbon in diamond. 44.Boric acid is a …………………. Acid. 45.Boric acid is a protic acid. [T/F]. PHYSICS Q.1-The dimensional formula of torque is –

( 1) M L2 T-2 (2 ) M-2 L T-2 ( 3) L0MT-2 (4) None of

these

Q.2 –The number of significant figures in 0.020800 m are –

( 1) 5 (2) 4 (3 ) 2 (2) None

of these

Q3-A light and a heavy body have the same kinetic energy , which one will have

greater linear momentum --

(1 ) Light Body (2 ) Heavy Body (3 ) both the body will have same (4)

None of these.

Q.4-If a = 2t + 5 then the velocity of the body after 5 second if it starts from rest –

(1) 50 m/s (2) 100 m/s (3 ) 25 m/s (4 ) 75 m/s

Q.5-An elephant and an ant are to be projected out of the Earth into space . The

ratio of their escape velocities will be –

(1 ) 1:1 (2) 100000 : 2 (3 ) 1:2 (4 ) None of these

Q.6-If displacement is y =u t +

g t2 then value force acting on body of mass m kg

(1 ) mg (2 ) m /g (3) 20 N (4) None of these

Q.7-The magnitude of the sum of two vectors is equal to the magnitude of their

difference then angle between the two vectors is –

(1) 450 (2) 900 (3) 1200 (4) 1350

Q.8-A particle is projected at an angle of 450 . The relation between range and

maximum height attained by the particle is-

(1) R = 4 H (2) 2H = R (3 ) 4R =H (4) None of these

Q.9-Sand is thrown on tracks covered with snow then friction will-

(1) increase (2) decrease (3) remains same (4) None of these

Q.10-The maximum acceleration of the train in which a box lying on its floor will

remain stationary , given that the coefficient of static friction between the box

and train ‘s floor is 0.15 and g = 10 m s-2 –

(1 ) 1.5 m/s2 (2 ) 3.5 m/s2 (3) 5 m/s2 (4)

None of these

Q.11- Differentiate between mass and weight .

Q.12-What is the ratio of the force of gravitational attraction between two bodies

kept in air and kept in water having same distance between them ?

Q.13-The force of 200N acts in a direction perpendicular to the direction of

motion then find the work done if distance travelled 100m ?

Q.14- Define inertia .

Q .15- Where ? The weight of body will be more at pole or at equator . Justify or

answer.

Q.16-For a stationary body the displacement time graph is

(1) straight line parallel to time axis (2) is a parabola (3) straight line parallel to

displacement axis (4) none of these

Q. 17-Out of following pairs , which one does not have identical dimensions

(1) Moment of inertia and moment of force (2) Work and Torque ( 3) Impulse and

Momentum ( 4 ) Angular momentum and Plank ‘ s constant

Q.18-If displacement is directly proportional to the square of the time elapsed

then its acceleration is –

(1) constant (2) variable (3) zero (4) None

of these

Q.19-If maximum and minimum values of the resultant of two forces acting at a

point are 7 N and 3N respectively , the smaller force is equal to

(1) 4 N (2) 5 N (3) 3 N (4) 2N

Q.20- If the radius of planet is doubled without and mass is halved then what will

be the value of g on the planet ?

Q.21-The radius of a sphere has percentage error 2% .Then find percentage error

in its volume

Q.21-The radius of a sphere has percentage error 2% .Then find percentage error

in its volume .

Q.22- Prove that distance travelled in nth second is-

S n th = u +

( 2n – 1)

.Q.23-Using calculus method prove derive second equation of motion .

Q.24-Find value of acceleration and Tension in the string in connected motion .

Q.25 If p is the linear momentum of an object of mass m kg and K is its kinetic

energy then prove that K =

BIOLOGY

L-6 ANATOMY OF FLOWERING PLANTS

Q1 What kind of plant tissue is found in the buds located in the axils of leave? Q2 Why is endodermis of dicot stem referred to as starch sheath? Q3 Why there is no secondary growth in a monocot stem?

Q4 Differentiate between Parenchyma and sclerenchyma? Q5 What is difference between Trichomes and root hairs? Q6What are bulliform cells ? Q7 What is difference between lenticels and stomata Q8 Mention the types of vascular bundles?Describe briefly? Q9 Draw diagram and explain anatomy of dorsoventral leaf? Q10 Distinguish between sapwood and heartwood ? Q11 What are sclerids ? Q12 What is difference.between primary meristems and secondary meristems ? Q13 What is difference between monocot stem and dicot stem Q14 What is epidermis ?Write its functions? Q15What is cork ? Explain its functions ?

C-7-STRUCTURAL ORANIZATION OF CELL

Q1 What is the difference between exocrine gland and endocrine gland? Q2 What is cartilage ? Name its types and write its specific functions ? Q3 Differentiate between tendon and ligament Q4Describe the external morphology of cockroach ? Q5 Why the body cavity of cockroach is called Haemocoel? Name the different layers of body wall in it ? Q6 What is the difference between oothecae and spermatophores ? Q7 What is mosaic vision? Q8 Describe the structure of adipose tissue briefly with help of diagram?

Q9 Classify the bone on the basis of texture? Q10 What is the difference between in three types of muscle fibre ? Q11 Name the type of epithelium that lines the inner lining of intestine? Q12 Give the location of hepatic caeca in a cockroach .Write its functions? Q13 Name the junctions present between epithelial cells Write its functions? Q14 What is difference between blood and lymph ? Q15What is bone marrow? Discuss its types ? C 8-CELL –THE UNIT OF LIFE Q1 Differentiate between primary cell wall and secondary cell wall? Q2 What are plastids? Name its types with specific functions? Q3 What are vacuoles? What is difference between sap vacuole and gap vacuoles? Q4 What are mesosomes ? Write its functions ? Q5 Write the functions of following a)Lysosomes b)Golgi apparatus c) Smooth ER d)Ribosomes Q6 What is cell wall ?Write its functions ? Q7 Where these structure are located and write its functions a)cristae b)cisternae c)thykoloid d) stroma Q8 Explain the fluid mosaic model of plasma membrane with diagram? Q9 What are cell envelope ?Describe its chemical nature ? Q10 justify the statement “mitochondria are known as power house of cell? Q11Which cell organelle are enclosed by a) single unit membrane b)double membrane unit Q12What is difference between Pilli and fimbriae Q13 What is endoplasmic reticulum?Name its types ?Write fuctions of endoplasmic recticulum? Q14 Why lysosomes is called suicidal bag? Q15 What will happen to the cell if there will be no golgi bodies ?

BUSINESS STUDIES

Q.1 Mention any two examples of statutory corporations. Q.2’ Only sale or exchange of goods/ services for profit is business.’’ Do you agree with the statement? Give one reason in support of your answer. Q.3 Name the process in which goods,services and information are purchased/sold by means of computer network-------------------- Q.4 It was a commercial town and also a major centre for export of Cotton (i) Peshwa (ii) Surat (iii) Mathura (iv) Mithila Q.5 Outline the concept of Social Responsibility. Q.6 Which of the following activities are generally outsourced by a Hospital? (i) Running a Cafetaria. (ii) Medical Store (iii) Security Services. (iv) All of the Above. Q.7 Name any two types of Telecom Services. Q.8 Name the enterprises where public and private work together with common objectives: (a)Joint Venture (b) PPP (c)Sole Proprietorship (d)Company Q.9 This document defines the relationship of company with outsiders. (i) Prospectus (ii) Articles of Association (iii) Memorandum of Association (iv) Capital Subscription. Q.10 Madhu sells his antique watch to his friend at a profit.Will this constitute a business activity why or why not? Q.11 Name the account which is opened only for businessmen.

Q.12Providing proper working condition is a type of social responsibility of a

business towards

(i) Government and Community

(ii) Employees

(iii) Owners

(iv) Consumers

Q.13 Distinguish between Partnership and Co-operative society.

Q.14 Mention any two types of general insurance.

Q.15 Which of the broad categories of industries involve in cattle breeding?

(i) Primary (ii) Secondary (iii) Tertiary (iv) None

Q.16What is the minimum paid up capital held by the government in Government

Company ?

Q.17 Give the example of C2C Commerce.

Q.18) A gas agency selling gas cylinders at prices much higher than the official

prices and making profits.Justify it.

Q.19 The payment mechanism typical to e-business (a) COD (b) E-Cash(c) Cheques

(d) Credit and Debit cards.

Q.20 The form of organisation best suited for self employment.

Q.21 State any three steps which can be taken by business enterprise for

environmental protection.

Q.22 How did the rise of intermediaries promote trade and commerce?

Q.23’ A private company is a compromise between partnership and public

company.’’ Explain.

Q.24 Explain the benefits of E-business.

Q.25 State ant three situations wherein Government company is the most

suitable form of organising public enterprises.

Q.26 Discuss the development of Indigenous banking.

‘’ All activities involving the removal of hindrances in the process of exchange are

included in commerce.’’ Explain.

Q27. After doing MBA,Vaibhav joined his father’s business on a salary of Rs. 2 lakh

per month .His elder brother, who is leading lawyer, gives legal consultancy to the

father and charges fee for the same. Name the economic activities in which the

three family members are engaged.

Q.28 Rajeev took a marine policy from Thee Star General Insurance

Company.Under this policy, goods have been insured against damage likely to be

caused by sea water.During the voyage, a hole was caused at the bottom of the

ship and through the hole,sea water entered into the ship .As a result,the goods

insured were damaged and Rajeev suffered a loss.

(i) Can Rajeev claim compensation for the damage from the Insurance

Company?

(ii) If yes, which principle of insurance is applicable?

Q.29 Explain the role of profit in the business.

Q.30 Your friend wants to purchase a mobile phone online as he learnt that

branded mobile phones are available at lower prices than their market rates at

different shopping sites.Suggest him how payment for the online shopping could

be made.

Q.31 Explain the services provided by commercial banks.

Q.32 What technical name is given to an organisation which controls production

and marketing facilities in more than one country? Explain any five features of

such an organisation.

ACCOUNTANCY

.1 Depreciation arises because of: (i) Wear and tear (ii) Inflation

(iii) Fall in the value of asset (iv) None of these.

Q.2 What do you know about Trial Balance?

Q.3 Is Bank Reconciliation Statement a part of Double Entry System?

Q.4 On intra state sale of goods, GST charged is :

(i) CGST & SGST (ii) SGST & IGST (iii) CGST & IGST (iv) NO TAX CHARGED.

Q.5 Journal Proper records transactions of-

(i) Similar Nature (ii) Capital Nature (iii) Revenue Nature (iv) Different Nature.

Q.6 Which account should be debited, if wages are paid for installation of a

machine?

Q.7 Business transactions are recorded in-----------------------------------.

Q.8 Write the meaning of Real Account.

Q.9 Cash Memo is prepared when goods are sold on-------------------------.

Q.10 Give two examples of Current Liabilities.

Q.11 Nominal Accounts are related to:

(i) Assets & Liabilities (ii) Expenses & Revenue (iii) Debtors & Creditors (iv)

None of these.

Q.12 The assets of a business as on 31st March ,2019 are ₹ 50,000 and its capital is

₹ 35,000. Calculate its liabilities on that date.

Q.13 What are the two bases of Accounting?

Q.14 If one aspect of a transaction is not recorded, which accounting concept is

not followed?

Q.15 Stock is valued at –

(i) Cost. (iii) Cost or Net Market Value

whichever is lower.

(ii) Net Realisable (Market Value) (iv) Cost or Net Market Value

whichever is higher.

Q.16 Name the external user of accounting information from whom the firm

purchases goods on credit.

Q.17 The term amortisation is used to write off:

(i) Tangible Assets (ii) Intangible Assets (iii) Current Assets (iv) Fictitious

Assets

Q.18 State one importance of Trial Balance.

Q.19 Bank Reconciliation Statement is prepared by ------------------

(i) Creditors (ii) Bank (iii) Account Holder (iv) Debtors

Q.20 The process of transferring the accounts from the journal to the ledger is

called------------.

Q.21 Journalise the following transactions in the books of Rajan ,Delhi:

(i) Sold goods to Krishna of Delhi at the list price₹ 20,000 less trade discount 10% and CGST &SGST @ 9% each and allowed cash discount 5%.He paid the amount immediately.

(ii) Supplied goods costing ₹ 6,000 to Mohan of Kolkata issued invoice at 10% above cost less 5% trade discount plus IGST @18%

(iii) Goods of ₹ 2,500 given as Samples.These goods were purchased paying CGST& SGST @ 9% each.

Q.22 Open a ‘T’shape account for Furniture and put the following transactions on the proper side:

(i) Furniture Purchased ₹ 1,80,000 (ii) Furniture sold ₹ 1,20,000

(iii) Additional Furniture Purchased ₹1,16,000 (iv) Depreciation on Furniture ₹ 12,000

OR On which side will the increase in the following accounts be recorded? Also state the nature of the Account:

(i) Purchases Account. (ii) Sohan (Creditor). (iii) Building Account.

Q.23 Prepare the voucher from the following transactions

13 May 2018 Purchased goods from Rohan vide no. 123 * ₹ 1,20,000

15May 2018 Sold goods for cash bill NO.231 * ₹ 1,10,000

21 May 2018 Rent paid ₹ 12,000

22 May 2018 Sold goods to M/S ParamHans bill no. 120* ₹ 18,000

Transactions marked with* are subject to levy of CGSTand SGST@6% each.

Q.24 Define the Provisions. What is the importance of creating a Provision?

Q.25 Prepare a Trial Balance from the following items Capital ₹ 24,000 Building ₹ 12,000

Opening Stock ₹ 8500 Returns Inward ₹ 1900 Furniture ₹ 10,200 Returns Outward ₹ 350

Purchases ₹ 8950 Trade Expenses ₹ 6270 Sales ₹ 23,470

Q.26 Prove that accounting equation is satisfied in all the following transactions of Mr. Sudharshan. (i) Started business with Cash ₹ 50,000 and Furniture ₹ 25000 ,Machinery ₹1,20,000 (ii) Rent received ₹ 20,000

(iii)Accrued interest ₹ 5,000

(iv) Commission received in advance ₹ 10,000

(v) Amount withdrew for payment of LIC premium ₹ 15,000

Q.27 Explain the following principles with the help of examples.

(i) Conservatism or Prudence Principle (ii) Dual Aspect Principle

Q.28

From the following information determine the balance as per Bank Pass Book of Ajay on31st March 2019. (i) Bank Overdraft as per Cash book ₹63,400. (ii) Interest on overdraft for 6months ended 31stMarch,2019 ₹16,00 entered

in the pass book. (iii) Bank Charges of ₹ 300 for the above period are debited in the paas book. (iv) Cheques issued but not cashed prior to 31st March,2019 amounted ₹

11,680. (v) Cheques paid into bank but not cleared before 31st March,2019 amounted

₹ 21,700. (vi) Interest on Investment collected by the bank and credited in the pass book

₹ 1,000. Q. 29 Prepare Purchase Retutrn and Sales Return book from the following transactions of Kapoor Shoes(Kolkata) assuming @CGST & SGST 6% each

3 April 2019 Returned to Bata Shoe Co. Kolkata 50 pairs of chappals being not approved sample@ ₹600 per pair Less: 20% Trade Discount

6 April 2019 Guru Nanak &Co.Kolkata returned to us: 10pairs of shoes for being defective @ 1200 per pair.

Less 10% Trade Discount

10 April 2019 Returned to Baluja Shoe& C0, Delhi 20 pairs of ladies chappals @ 500 per pair Less 15% Trade Discount

16 April 2019 Pratap footwear Co.Patna (Bihar) returned to us 50 Pairs of Shoes@ 1400 per pair

29 April 2018 Returned to Manoj Shoe Co. 20 pairs of sandals @ 1000 per pair.

HISTORY

Each question carrying 1 mark.

1. What is regional continuity models?

2. Daimyos were the servants.(T/F)

3. Write any one feature of Mesopotamia temple.

4. What was the major use of Spinning Jenny

5. Who were papyrologists?

6. Columbus discovered

a) Asia. b) America. c) Australia. d)Africa

7. The community of Islam believers are called...................

8. Correct the statement and rewrite it.

After the death of Prophet Mohammad Jews controlled ummas.

9. Write the name of Genghis khan father and mother.

10. The Last Supper was painted by .................

11. Write one feature of Meiji school system.

12. The first Opium war held on ............

13. Pope lived in Paris.(T/F)

14. The ten hours bill was passed....................

15. Write two reasons how fourth order emerged.

Match the following

16. Donatello. Aztecs

17. Cortes. Samuel Crompton

18. Mule Statues

19. The continent of North America extends from the................

to the Tropic of cancer, from the Pacific to the ......................

Ocean.

20. Write any two difference between Australopithecus and

Homo.

(PART-B)

SHORT ANSWER TYPE QUESTIONS

Each question carrying 3 marks.

21. Discuss the religious practices and beliefs of ummas.

22. Describe the growth second order in European countries.

Or

Write the critical condition of women and children during

industrialisation.

23. Why was Spanish hated by Arawaks?

Or

Write the short note on Taiwan.

(PART – C)

SOURCE BASED QUESTIONS


24. Read the following passage and answer accordingly. Yasa

In 1221, after the conquest of Bukhara, Genghis Khan had assembled

the rich Muslim

residents at the festival ground and had admonished them. He called

them sinners and

warmed them to compensate for their sins by parting with their

hidden wealth. The episode

was dramatic enough to be painted and for a long time afterwards

people still remembered

the incident. In the late sixteenth century, 'Abdullah Khan, a distant

descendant of 'Jochi,

Abdullah Khan's eldest son, went to perform his holiday prayers

there. His chronicler. Hafiz-i

Tanish reported this performance of Muslim piety by his master and

included the surprising

comments : 'this was according to the yasa of Genghish Khan.'

a) Whom and where did Genghis Khan assemble the rich Muslim

residents ? (2)

b) Why did Genghish Khan call them sinners ? (1)

c) Who was Abdullah Khan ? (1)

d) What do you mean by yasa ?(1)

25. Read the following passage and answer accordingly.

ADescription of The Syndey Area in 1790

' Aboriginal production had been dramatically disturbed by the British

presence. The arrival of

a thousand hungry mouths. followed by hundreds more, put

unprecedented pressure on

local food resources.

So what would the Daruk people have thought of all this ? To them

such largescale

destruction of sacred places and strange, violent behaviour towards

their land was

inexplicable. The newcomers seemed to knock down trees without

any reason, for they were

not making canoes, gathering bush honey or catching animals.

Stones were moved and

stacked together, clay dug up, shaped and cooked, holes were made

in the ground, large

unwidely structures built. At first they may have equated the clearing

with the creation of a

sacred ceremonial ground ..... Perhaps they thought a huge ritual

gathering was to be held,

dangerous business from which they should steer clear. There is no

doubt the Daruks

subesquently avoided the settlement, for the only way to bring them

back was by an official kidnapping .

a) Who are aborigines ? (1)

b) How was aboriginal Production dramatically disturbed by the

British Presence ? (2)

c) What did the Newcomers do ? (1)

d) Who avoided the settlement ? (1)

26 Read the following passage and answer accordingly.

William Tyndale, an English Lutheran who translated the Bible into

English in 1506, defended

protestantism thus : 'In this they be all agreed, to drive you from the

knowledge of the

scripture, and that ye shall not have the text there of in the

mothertongue, and to keep the

world still in darkness, to the intent they might sit in the consciences

of the people, through

vain superstition and false doctrine, to satisfy their proud ambition,

and insatiable

covetousness and to exalt their own honour above king and emperor,

Yet, and above God

himself.... which thing only moved me to translate theNew Testament.

Because I had

perceived by experience, how that it was impossible to establish the

lay- people in any truth,

except the scripture were plainly laid before their eyes in their mother

tongue, that they might

see the process, order and meaning of the text.'

a) Who is William Tyndale ? (2)

b) Why did protestants criticise the Catholic Church ? (2)

c) What did Tyndale feel with his experience ? (1

(PART – D

LONG ANSWER TYPE QUESTIONS


27. Describe the history of early humans life.

Or

Discuss reasons of third crisis in Roman empire.

28. Describe the various military activities arranged by Zenghis

Khan.

Or

Describe briefly about Incas culture.

29. Explain the process of modernization on Japan.

Or

When and where was the first university opened? What were

the changes brought by universities.

30. Why was the history of the Australian native peoples left out of

history books?

Or

How invention open the door of modernization during the time

of industrial revolution.

MAP QUESTION

Map question carrying 4 marks

31. On the physical map of world mark the following.

31.1 Mark the territory of Mongol Empire. (1)

31.2 Mark the territory of Incas empire. (1)

31.3 Mark any two places of industrial revolution. (2)

ECONOMICS Q.1 What do you mean by the following: a)Expansion of demand b) Contraction of demand c )Increase in demand d)Decrease in demand e) Market demand F) Individual demand Q.2 What caused an upward movement of demand curve?

Q.3 What caused an downward movement of demand curve?

Q.4 Distinguish between: a) Normal good and Inferior good b) Substitute good and Complimentary good c) Inferior good and Griffin good Q.5 What is the assumption of law of demand?

Q.6 Suppose there are two consumers in the market for a good and their demand

functions are as follows:

D1(p) = 20-p for <20 and d1(p) = 0 for p>20

Q.7 Suppose there are 20 consumers for a good and they have identical demand

functions:d(p)= 10-3p for any price less than or equal to 10/3 and d1(p) = 0at any

price greater than 10/3.What is the market demand.

Q.8 Explain the inverse relationship between price and demand?

Q.9 Explain the factors of elasticity of demand.

Q.10 State whether the elasticity of the following goods are elastic or inelastic:

Car , textbooks , diamonds , milk, seasonal fruits.

Q.11 Suppose the price elasticity of demand for a good is -0.2. If there is a 5%

increases in the price of the good, by what percentage will demand for the good

go down?

Section B

Q.12 Define the terms: a) Tabular presentation b) Diagrammatic presentation c) Graphical presentation d) Captions e) Stubs f) quadrants Q.13 What are the essentials foe a good table and for a good diagram. Q.14 Explain the various kinds of diagrams Q.15 Which bar diagram is used to represent net changes in data?

Q.16 Write down any two advantages of graphs.

Q.17 Write down any two limitations of diagrams.

ECONOMICS

Q.1 Calculate standard deviation and its coefficient for the following data:

X 4 6 8 10 12 14 16

F 11 12 13 14 15 15 18

Q.2 Calculate quartile deviation and its coefficient for the following data: S

CI 0-10 10-20 20-30 30-40 40-50

f 5 14 12 10 8

Q.3 Calculate mean deviation from mean:

x 12 13 14 15 16 17

f 15 18 19 17 15 13

Q.4 With the help of diagram, Explain the following relationship:

i)TC,FC,VC

ii)AC ,MC

iii)AR,MR

MATHEMTICS

OBJECTIVE QUESTIONS ( 1 MARK EACH)

1. Write 13 π/4 in degrees.

2. Express -47°30’ in radians.

3. Express each of the following angles in sexagesimal system (I.e. in degree, minutes and seconds).

(i) Π/5

(ii) Π/12

(iii) Π/8

4. Express each of the following angles in radians:

(i) 300°

(ii) 5°37’30”

(iii) 450°

5. The larger hand of a clock is 70 cm long. How many centimeters does its extremity move in 10

minutes.

6. The moon’s distance from the earth is 360000 km and its diameter subtends an angle of 31’ at the eye

of the observer on the earth. The radius of the moon is:

(i) 1600 km

(ii) 1623.81 km

(iii) 1427.36km

(iv) None of the above

7. A train is travelling on a curve of 700 m radius at 14 km/h. Through what angle will it turn in one

minute: (I) 2/5 radian (ii) 4/3 radian (iii) 1/3 radian (iv) 1/4 radian

8. Find the principle solution of each of the following:

(i) Sin x = 1/2

(ii) Sec x = 2

(iii) Cosec x = - 2

9. Write the roots of the quadratic equation x2 + 8 = 0.

10. The argument of 1/ ( 1 - i ) is

(i) 4/

(ii) 3/

(iii) 4/

(iv) 3/

11. i35

is :

(i) Purely real

(ii) Purely imaginary

(iii) Mixed number having both real and imaginary parts

(iv) Cannot say

12. Write the conjugate of i2

1

13. What is the multiplicative inverse of i34 ?

14. Find the magnitude of each of the following:

(i) 6 - i

(ii) 512 i

(iii) i

i

32

1

15. One of the possible pairs of consecutive even positive integers, both of which are greater than 10

and their sum is less then 50 is:

(i) 24, 26

(ii) 16, 18

(iii) 10, 8

(iv) 11,15

16. Given set A = { x ϵ Z : 0 ≤ x ≤ 10} then solve - 2x + 6 ≤ 5 x - 4 in set A.

17. Solve | 3x - 7 | ≥ 2

18. What is the difference between permutations and combinations?

19. The number of words each of 3 vowels and 2 consonants can be formed from the letters of the word

INVOLUTE :

(i) 1440

(ii) 2430

(iii) 1884

(iv) 2880

20. The number of 3 digits numbers with all distinct digits is

(i) 248

(ii) 348

(iii) 648

(iv) 548

21. A coin is tossed 3 times. Determine the number of possible outcomes and write them.

22. You can go from delhi to agra either by car or by bus or by train or ;by air. In how many ways can you

plan your journey from delhi to agra?

23. How many three digit numbers are there which have exactly one of their digits as 6?

24. There are 3 different rings to be worn in 4 fingers with atmost one in each finger. In how many ways

this can be done?

25. How many 3 letters words can be formed by using the letters of the word ORIENTAL.

26. The value of k for which the coefficient of x2 and x3 will be equal in the expansion of ( 3 + k x)9

(i) 7/9

(ii) 3/9

(iii) 9/7

(iv) 4/7

27. The fourth term in the expansion of { (3/ x2 ) - ( x3 / 6)}7 is ________________

28. The term independent of x in the expansion of (x - 1/x)12 is

(i) 924

(ii) 249

(iii) 942


29. The value of k for which 405 is independent term in the expansion of (

x

kx

2 ) 10 is

(i) 3

(ii) -3

(iii) Both the above


30. The number of terms required of A.P. 54, 51, 48,… to have sum 513 is

(i) 18, 19

(ii) 21, 22

(iii) 14,16

(iv) 20,16

DESCRIPTIVE QUESTIONS:

1. Show that tan 70° = 2 tan 50° + tan 20°

2. Prove that sin 10° sin 50° sin 60° sin 70° = √3/16

3. In triangle ABC, prove that a2 + b2 + c2 = 2 ( bc cos A + ca cos B + ab cos C )

4. Prove that xx

xxx

cos5cos

sin3sin25sin

= tan x

5. Using the principle of mathematical induction prove that 41n - 14n is divisible by 27 for all natural n.

6. Using the principle of mathematical induction prove that ( n5 / 5) + ( n3 /3) + 7n/13 is a natural

number for all natural n.

7. Prove the rule of exponents (ab)n = an bn by the principle of mathematical induction for every n ϵN.

8. Using the principle of mathematical induction, prove that 23n - 1 is divisible by 7 for all n ϵ N.

9. Represent 31

4

i

in polar form.

10. If iyxiii )43)(32)(21( , show that x2 + y2 = 1625

11. Find the square root of -16 + 30 i .

12. If )3(4 yxix is conjugate of i63 , find real x and y.

13. If sincos ia , find the value of a

a

1

1.

14. What is the conjugate of (2 - i )/ )21( i 2 ?

15. Solve the equation 0)1(2)5()2( 2 ixixi for xϵ C.

16. A manufacturer has 600 litres of a 12% solution of acid. How many litres of 30% acid solution must

be added to it so that acid content in the resulting mixture will be more that 15% but less than 18%.

17. The longest side of a triangle is three times the shortest side and the third side is 2 cm shorter than

the longest side. If the perimeter of the triangle is at least 61 cm, find the minimum length of the

shortest side.

18. A plumber can be paid under two schemes as given below:

Scheme I : rs. 600 and rs. 50 per hour

Scheme II: rs. 170 per hour.

If the job takes x hour, for what values of x does the scheme I give the plumber the better wages?

19. How many different arrangements of the letters of the word INDEPENDENCE can be formed so that

vowels always occur together?

20. A team of 8 players is to be selected from a group of 12 players, followed by chosing a captain and a

vice captain from the 8 selected. In how many ways can this be done?

21. A polygon has 44 diagonals. Find the number of sides of the polygon.

22. A man has seven friends, inn how many ways can he invite one or more of them to a party?

23. We wish to select 6 person from 8, but if the person A is chosen, then B must be chosen. In how

many ways can selections be made?

24. Eight children are to be seated on a bench, how many ways this is possible if the youngest child sits

in a corner.

25. Find the middle term in the expansion of (3x - x3 /6)7 .

26. If the coefficients of (r - 1)th, rth and (r+1)th terms in the expansion of (1 + x)n are in the ratio1 : 7 :

42, find n and r.

27. Prove that the coefficient of the middle term in the expansion of (1 + x)2n is equal to the sum of the

coefficient of the two middle terms in the expansion of (1 + x)2n-1 .

28. If the coefficient of 5th, 6th and 7th terms in the expansion of (1 + x)n are in A.P.. find n.

29. Find whether the expansion of 182 )2

(x

x will contain a term containing x10 ?

30. Find numerically the greatest term in the expansion of (2 + 3x )9, where x = 3/2.

31. In an increasing G.P., the sum of first and the last term is 66, the product of the second and the last

but one term is 128. if the sum of the series is 126, find the number of terms of the series.

32. One side of a square is 10 cm. The mid points of its sides are joined to form another square whose

mid points are again joined to form one more square and this process is continued infinitely. Find the

sum of the areas of all the squares so formed.

33. The sum of three numbers in A.P. is 21. if second is reduced by one and third is increased by one, the

resulting numbers form a G.P., find the numbers.

MODERN SCHOOL,VAISHALI CLASS XI ASSIGNMENT 2019-20 ...

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