Economics Revision worksheet(1) for class XI

1.What does the area under MU curve depict?(1)

2. What is the elasticity of the upward sloping supply curve starting from origin?(1)

3 . Distrust of statistics is due to

i) Misuse of statistics ii) Insufficient statistical methods iii) Limitations of statistics.(1)

4. Consumer Price Index is also known as _____________________ .(1)

5. Both variable and fixed factors exist in case of zero output. Defend or refute.(3)

6. Out of census and sample which method gives better results and why?(3)

7. What is the reason for the long run equilibrium of a firm under monopolistic competition to be

associated with zero profit?(4)

8. Calculate mean, median and mode from the above data. (6)

Economics Revision worksheet(2) for class XI

1) What is meant by distribution? (1)

2) When a consumer has got equality between marginal utility and price for a good, what is

this condition called?(1)

3) If Q1 =16 and Q3 =36, then find the value of inter quartile range.(1)

4) Which items are not included in WPI?(1)

5) Utility is directly linked with the usefulness of a commodity. Comment.(3)

6) .” Statistics methods are dangerous weapons in the hand of an unqualified

person.”Comment.(3)

7) In a situation of constant demand, equilibrium quantity does not change even when

supply increases or decreases. Do you agree?(4)

8) Calculate range, Quartile deviation, Mean deviation, Standard deviation.(6)

Which crop has greater variation?

X 100-200 200-300 300-400 400-500 500-600

f 10 18 12 20 40

Districts 1 2 3 4 5 6 7 8 9 10

Wheat 12 10 15 19 21 16 18 9 25 10

Rice 22 29 12 23 18 15 12 34 18 12

WORKSHEET 1

Class-XI; 2019-2020

SUB: Psychology

1. “Individuals exhibit different behaviours in different cultures.” What is the purview of

Psychology in this regard? (3 Marks)

2. “A psychological research will lead objective results only if proper steps are followed.”

Explain. (4 Marks)

3. “The Pituitary gland is known as the master gland of the body.” Why? (4 Marks)

4. “A child born to an alcoholic mother develops Fetus Alcohol Syndrome”. How and why did

alcohol affect the developing child’s brain? (3 Marks)

5. “When you go into a dark movie hall you find it difficult to adjust to the darkness for 15-20

minutes”. Why? (2 marks)

6. What is the Cocktail Party phenomenon? (4 marks)

7. “Blinking of the eye is an operant behaviour.” Yes/No. Explain your answer. (2 marks)

8. Explain an actual situation of Insight learning from your daily life. (3 Marks)

9. “Information is stored in some other form in our memory system.” What phenomenon is

explained here? (2 Marks)

10. Explain any 3 strategies for enhancing memory that you engage in real life.

(3 Marks)

WORKSHEET 2

Class-XI; 2019-2020

SUB: Psychology

1. How did Psychology become the study of behaviour? (3 marks)

2. “No experiment can yield objective results without a control”. Explain. (3 Marks)

3. Describe a situation of Enculturation and Socialisation, in your life. (3 Marks)

4. What are the strategies of Acculturation you have used in your daily life? (3 Marks)

5. Why are concepts important in thinking? Explain with relevant examples. (4 Marks)

6. What brainstorming techniques do you use in actual life? (3 Marks)

7. “All of you want to belong to a group in school.” What need are you expressing? (4 marks)

8. Give 3 strategies of managing your anger. (3 Marks)

9. Apply the Atkinson-Shiffrin model of memory to a situation in school and explain the same. (4

marks).

10. Describe a situation of Classical Conditioning from your own lives. (3 marks)

REVISION WORKSHEET 1_CHEMISTRY_CLASS XI

Q.1 The bond in Cl2 is:

(a) Non polar (b) Polar (c) Electrovalent (d) None of the above

1

Q.2Each carbon in C2H4 is:

(a) sphybridised

(b) sp2hybridised

(c) sp3hybridised

(d) None of the above

1

Q.3The following reaction is classified as:

CH3CH2I + KOH (aq) CH3CH2OH + KI

(a) electrophilic substitution (b) nucleophilic substitution (c) elimination (d) addition

1

Q.4Is H3BO3 a tribasic acid? 1

Q.5Predict the change in internal energy for an isolated system at constant volume.

1

Q.6 What happens when 2-Bromobutane is treated with alcoholic KOH? But-2-ene

1

Q.7 Calculate the oxidation number of phosphorous in the following species.

(a) HPO32-

(b) PO43-

1

Q.8Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms?

1

Q.9 Write the IUPAC name of the compound: (CH3)3CCH2C(CH3)3vx 1

Q.10 Assertion (A): Nitrogen has higher ionization enthalpy than oxygen.

Reason (R): Nitrogen atom has smaller atomic size than oxygen.

A is right and R is wrong.

(a) Both A and R are true. R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true.

1

REVISION WORKSHEET 2_CHEMISTRY_CLASS XI

Q.1 An ideal as is allowed to expand is allowed to expand against a constant pressure of 2 bar from 10L to 50L in one step. Calculate the amount of work done by the gas.

2

Q.2 For the reaction, 2A(g) + B(g) 2D(g)

ΔU0 = -10.5kJ and ΔS

0=-44.1JK

-1. Calculate ΔG0 for the reaction and predict

whether the reaction is spontaneous or not.

2

Q.3 2NO (g) + O2(g) 2NO2(g), ΔH=-117kJ

(a) Predict the effect of increase in concentration of NO on the equilibrium

concentration of NO2.

(b) Predict the effect of pressure decrease as a result of increased volume on the equilibrium concentration ofNO2.

2

Q.4 Explain the following:

(a) CO2 is a gas.

(b) Silicon forms SiF62-

ion whereas corresponding chloro compounds of

carbon are not known.

2

Q.5 Lithium is the only alkali metal that forms nitride directly on reaction with air. Explain

2

Q.6 How does (i) EWG and (ii) electron donating group (EDG) influence the acid strength of carboxylic acid end?

3

Q.7 Draw the cis- and trans- isomer of hep-2-ene.Which isomer will have higher boiling point and why?

3

Q.8 Despite their –I effect, halogens are o- and p- directing in haloarenes. Explain.

3

Q.9 On the basis of VSEPR model predict the shapes of the following molecules:

PCl5, NH3, XeF4,XeF2, SF4, BCl3

3

Q.10 In atom, an electron is moving with a speed of 600ms-1 with an accuracy of 0.005%. Find the certainty with which the position of the electron can be located.

(h=6.6x10-34

kgm2s

-1, m= 9.1x10

-31kg)

WORKSHEET - 1

CLASS 11

Physical Education

1. What is adapted physical education?

1

2. What is equilibrium?

1

3. What is complicated fracture?

1

4. Mention any two side effects of stimulants.

1

5. Discuss about the significance of biomechanics in physical education and sports? (any

six)

3

6. Describe any three preventive methods of common sports injuries.

3

7. Discuss the physical fitness components in detail.

5

8. Discuss the classification on bones with example.

5

WORKSHEET - 2

CLASS 11

Physical Education

1. When did the Special Olympics begin?

1

2. Williams cup is related to which game?

1

3. What is strenuous trekking?

1

4. Mention any two side effects of narcotics.

1

5. What is meant by –

a. Hinge Joint

b. Pivot joint

c. Condyloid joint

3

6. What are the three constituents of pranayama?

3

7. Discuss any five objectives of Khelo India.

5

8. Discuss the five important functions of muscles.

5

WORKSHEET-1

CLASS-XI

SUBJECT- BIOLOGY

1. In an experiment it was found that adenine constitutes 31% and guanine constitutes

19%. The quantity of cytosine in this DNA is likely to be: [1]

a. 19%

b. 40%

c. 31%

d. 69%

2. Earliest occurrence of metamerism was witnessed in [1]

a. Platyhelminthes

b. Coelentrata

c. Arthropoda

d. Annelida

3. In Pinus, the male cone bears a large number of [1]

a. Ligules

b. Anthers

c. Microsporophylls

d. Megasporophylls

4. Longest phase of meiosis is [1]

a. Prophase-I

b. Prophase-II

c. Anaphase-I

d. Metaphase-II

5. The process which helps in pushing the bolus(ball of food mixed with saliva) from the

mouth to the stomach through oesophagus is: [1]

a. Peristalsis

b. Ingestion

c. Thermoregulation

d. Exhalation.

6. Which of the following statement is true for a leaf? [1]

a. It is a lateral, flattened structure.

b. It originates from shoot apical meristem

c. It is an vegetative organ and bears axillary bud in its axil

d. All of the above.

7. State any one observable difference between the leaves of a C3 plant and a C4 plant.[1]

8. State the total number of ATP molecules produced by one molecule of glucose. [1]

9. Mention the type of cell in which the plant cells show mitotic division. [1]

10. State the name of the hormone responsible for the phenomenon of apical dominance in

plants. [1]

WORKSHEET-2

CLASS-XI

SUBJECT- BIOLOGY

1. A person visited agricultural fields and observed that the growth yield of sugarcane crop

is very low and discussed the application of some PGRs for increased crop yield:

i. What are PGRs?

ii. State how can the yield of sugarcane be increased. [2]

2. If the substrate used during respiratory process is a carbohydrate, what will be its RQ

value? [2]

3. If a cell having 20 chromosomes undergoes mitotic division, what will be the

chromosome numbers(n) during telophase? Also state the possible DNA content during

anaphase. [2]

4. Pure water has the maximum water potential because it lacks solutes. Analyse the

statement. [2]

5. The binding of a competitive inhibitor essentially shuts off the activity of an enzyme.

Elaborate. [2]

6. Explain how does CO2 and O2is transported to and from tissues. [3]

7. Metabolism is a defining feature of all living organisms without exception. Isolated

metabolic reactions in vitro are not living things, but surely are living reactions.

Comment. [3]

8. Describe the movement of water molecules in leaves [3]

9. Recall two major functions of buccal cavity and the state the associated glands present.

[3]

10. Explain the following terms and also state their volume: a. Tidal volume b. Inspiratory

reserve volume c. Vital capacity. [3]

REVISION WORKSHEETS

CLASS – XI – B

SUBJECT – PHYSICS

WORKSHEET – 1

10 Marks

1. If x = a + bt + ct2, where x is in metre and t in second; then what is the unit of c?

2. The velocity-time relation of an electron starting from rest is given by v= kt, where

k = 2m/s2, calculate the distance traversed in 3 s.

3. A stone is thrown horizontally with a speed √2gh from the top of a wall of height h. It

strikes the level ground through the foot of the wall at a distance x from the wall. What is

the value of x?

4. A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring

and the spring reads 49 N, when the lift is stationary. What will be the reading of the

spring balance, if the lift moves downward with an acceleration of 5 m/s2?

5. A machine gun fires 60 bullets per minute with a velocity of 700 m/s. If each bullet has a

mass of 50 g, find the power developed by the gun.

6. A body of mass 50 g is revolving about an axis in a circular path. The distance of the

centre of mass of the body from the axis of rotation is 50 cm. Find the moment of inertia

of the body.

7. The escape velocity for a satellite is 11.2 km/s. If the satellite is launched at an angle of

600 with the vertical, what will be the escape velocity?

8. The length of a stretched wire is 1m and its fundamental frequency is 300 Hz. What is

the speed of the transverse wave in the wire?

9. Calculate the r.m.s velocity of air molecules at S.T.P. Given density of air at S.T.P is

1.296 kgm-3.

10. V

B(2P,V) C(2P,2V)

A(P,V) D(P,2V)

O T

An ideal monoatomic gas is taken round the cycle ABCDA as shown in the P-V

diagram. What is the work done during one complete cycle?

WORKSHEET – 2

25 Marks

1. Determine the Poisson’s ration of the material of a wire whose volume remains constant

under external normal stress. (2)

2. How much energy is radiated per minute from the filament of an incandescent lamp at

3000 K, if the surface area is 10-4m2 and its emissivity is 0.4?

Given, Stefan’s constant σ = 5.67 X 10-8 Wm-2 K-4. (2)

3. A quantity of air at normal temperature is compressed (i) slowly (ii) suddenly to one third

of its volume. Find the rise in temperature, if any in each case. (2)

4. A rocket is moving at a speed of 200 m/s towards a stationary target. While moving, it

emits a sound wave of frequency 1000Hz. Some of the sound reaching the target gets

reflected back to the rocket as an echo. Calculate (a) the frequency of the sound wave

as detected by a detector attached to the target and (b) the frequency of the echo as

detected by a detector attached to the rocket. (2)

5. Draw position –time graphs of two objects moving along a straight line when their relative velocity is: (i) zero (ii) positive. (2)

6. Deduce the equations of motion for uniformly accelerated motion using calculus method

and algebraic method. (3)

7. Define the two principal specific heats of a gas. Explain why the molar specific heat at

constant pressure is greater than specific heat at constant volume? (3)

8. A 100kg ball and a 200kg ball approach each other with velocities 200m/s and 100m/s

respectively. What are their velocities after collision if the collision is perfectly elastic? (3)

9. An artificial satellite revolves around the earth at a height of 10000 km. The radius of the earth is 6000km.Mass of earth is 6x1024 kg and G=6.67x10-11 Nm2/kg2.Find its orbital velocity and period of revolution. (3)

10. Show that the slop of an adiabatic curve at any point is γ times the slop of an isothermal

curve at corresponding point. (3)

REVISION WORKSHEET 1 ON MATHEMATICS CLASS XI 2020

Q1. A=

.Find . Use it to solve the system of equations

x-2y=10, 2x-y-z=8, -2y+z =7 (6)

Q2. + = .Find

(4)

Q3. Show that derivative of

is

. (4)

Q4. Show that the function f: defined by f(x) =

is one –one.Find the range

of f. Also find the inverse of the function f: range of f. (4)

Q5. Find length of foot of perpendicular from (3,2,1) to X axis (1)

REVISION WORKSHEET2 ON MATHEMATICS CLASS XI 2020

Q1.Solve graphically the system of linear equations:x ,

. (6)

Q2. . The letters of the word ASSASSINATION are arranged at random .Find the probability

that

a) All A’s are not coming together

b) No two A’s are coming together. (4)

Q3. A =

.Prove that A.adj A = det A (6)

Q4.Show that for any square matrix A , A + AT is symmetric and A – AT is skew symmetric.

(4)

Q5.A= { 1,3,4,5}, B = { 4,5,6,7}, U ={ 1,2,3,4,5,6,7,8}.Prove De Morgan’s Laws. (2)

REVISIONAL WORKSHEET 01

PSYCHOLOGY

CLASS XI

SET A

Answer all the questions ( 3X10=30)

1. Differentiate between Clinical and counseling psychologists.

2. List the subjects that come under basic psychology.

3. Which method of data collection is used in a qualitative research?

4. Which portion of hindbrain is involved in sleep mechanism? What are the other functions of that

portion of hindbrain?

5. What are the reasons behind disappearance of REFLEXES after a certain period of time?

6. How do socio cultural factors play an important role in forming our perception?

7. Differentiate between proactive and retroactive inhibition.

8. State any one barrier of creative thinking? Why is reinforcement important to inculcate good

behavior in a child?

9. Who is the pioneer in creative thinking? State his proposal on thinking.

10. How can one monitor his/her emotions to overcome examination anxiety?

REVISIONAL WORKSHEET 02

PSYCHOLOGY

CLASS XI

SET B

Answer all the questions ( 3X10=30)

1. Differentiate between interpersonal and intrapersonal elements of emotional intelligence.

2. State any one barrier of creative thinking?

3. What are mental models?

4. Differentiate between a psychiatrist and a psychologist.

5. What do you understand by non veridical perceptions? Discuss with an example.

6. Who are the Homo sapiens? Why are they named so?

7. What do you understand by “chromosomal abnormalities”?

8. Name the smallest structure in the brain which controls our behavior.

9. What is the importance of hypothesis in a research work?

10. Why does a researcher combine two or more methods in a research work?

ENGLISH CORE

REVISION PAPER I

CLASS XI B

1. On the occasion of World Heritage Day, design a poster in about 50 words highlighting the

need to preserve the monuments of our country. You are Karan/Khushi, the President of

Heritage Club of Sunshine Public School, New Delhi. 4

2. You are Ravi/ Reedhima, of Springfields School, Pune. You have been a witness to the sale

of adulterated and fake spices, milk products and chemically treated vegetables and fruits in the

markets openly. Write a letter to the Health Minister of your state expressing your concern about

this and requesting him for personal supervision to tackle the issue. 6

3. Answer the following questions in 30 - 40 words each. 2X4=8

a. How were Shahid's parents responsible for his secular views?

b. Comment on the title of the story ‘Birth’. What is its significance?

c. ‘She launches away towards the infinite.’ Explain.

d. What role did nature play to mourn grandmother’s death? Why?

4. Answer the following question in about 120 words. 6X2=12

a. The story ‘The Address’ is divided into pre-war and post - war times. Compare the lifestyles of Mrs. S. before the war with her daughter’s after the war?

b. If a teacher is strict and does not allow his pupils freedom, he becomes an object of their criticism. But later on, he is revered and remembered. Discuss with reference to ‘The Browning Version’.

REVISION PAPER II

1. You are the secretary of Rotary Club, Delhi. Draft a formal invitation (in not more 50 words)

to be sent to the members to a musical night to pay tribute to gazal king, Jagjit Singh on 19 April

2020 at 5:30 pm at Karnani auditorium. 4

2. You are Suresh/Savita, 21 Vaishali, Bangalore. You came across the following

advertisement. You consider yourself eligible for the post. Write an application in response to

the advertisement:

Applications are invited for the post of Junior Engineer. The candidate must have at least a

diploma in Civil Engineering from a recognised institute. He should have at least three years

experience of field work. Salary commensurate with qualification and experience. Apply to the

Manager, Parsva Constructions Ltd., 24, Sector 10 Mysore, within 10 days, with detailed

resume. 6

3. Answer the following questions in 30 - 40 words each. 2X4=8

a. How did Aram convince himself with the thought that Mourad had not stolen the horse? b. Why were the residents happy to have melon as their king?

c. Why has the rain being compared to a song in the poem ’The Song of the Rain’? d. Describe the boat Wavewalker which set sail from Plymouth, England in July 1976 for

going around the world?

4 Answer the following question in about 120 words. 6X2=12

c. The author’s grandmother had a strong persona. Illustrate from the text 'The Portrait of a

Lady’.

d. Andrew Manson gave true representation of a medical practitioner. He tried every effort

to save the life of Joe Morgan’s precious child. What message does his effort leave

behind?

Revision Worksheet 1

Computer Science

Q1. State and prove De Morgan’s law algebraically .(Any one). 2

Q2 Verify absorption law using truth table. 2

Q3 Draw the circuit diagram of A.(B + C’). 2

Q4 What do you understand by My SQL client? 2

Q5 What is the difference between Char and Varchar? 2

Q6 Write SOL query to display details of students from student table

with age range from 14 to 16. 1

Q7 Write SQL query to add 1000 to the salaries of those employees whose salary is less

than 7000 in the emp table. 1

Q8 Write a SQL query to list all unique deptno from emp table. 1

Q9Add a NOT NULL constraint to the Emp table on column empname. 1

Q10 What is the function of memory ? What are its measurement units? 3

Q11 Convert 1310 to binary. 1

Q12 Convert 4A8C16 to binary. 1

Q13 Convert 7290510 to hexadecimal. 1

Q14 Convert 1010102 to decimal. 1

Q15 Convert 26610 to octal. 1

Revision Worksheet 2

Computer Science

Q1. State and prove Involution law .(Any one). 2

Q2 Give the duals of i)X + X’Y ii)XY + XY’ + X’Y 2

Q3 Draw the circuit diagram of X.(X + Y) . 2

Q4 Explain with example any four constraints available in MySQL. 2

Q5 What is the difference between primary key and foreign key? 2

Q6 Write SOL query to display the highest salary from emp table. 1

Q7 Write SQL query to add a column comm in the emp table. 1

Q8) Write SQL query to list employee’s name and DOJ from emp table. 1

Q9) write a query to display the names of all employees from emp table having ‘L” as any

alphabet in name.

1

Q10) What are language processors ? Explain . 4

Q11) Convert 4728 to octal. 1

Q12) Convert 110112 decimal using dibble dobble method. 1

Q13 Convert 734510 to hexadecimal. 1

Q14 Convert 11112 to decimal. 1

Q15 Convert 20010 to octal. 1