Csir Net Jrf

8/14/2019 Csir Net Jrf

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CSIR NET JRF: Key points to know for Paper-I

Which metal is always found in free state in nature-Gold. Bauxite is an ore of-Aluminum.

Material used for bleaching pulp is-Sodium Hypo -chlori Which gas is leaked in Bhopal gas tragedy-Methyl Isocyanides.

The chemical name of table salt is-Sodium Chloride. Chemical name of Vitamin C is Ascorbic Acid. Bone is used as fertilizer because it contains the plant nutrient-Phosphorus.

Baking soda is-Sodium Bicarbonat.

Plaster of Paris is made from-Gypsum. Which element is common in all acids-Hydrogen.

Which element is common in all organic compounds is -Chlorine. What is the function of Green leaves in plants Photosynthesis.

Which is largest Gland in human body Liver Which is largest Organ in human body Skin

Which is longest Bone in human body Femur Which Gland is called the master Gland Pituitary

How many Bones in adult human body 206

How many Bones in childs body 300 What is the temperature of normal human body 36.9C. Which is the helps in clotting in blood Vitamin K.

Total volume of blood in normal adult human body 5-6iiters. Red blood corpuscles(RBC)are formed in the bone marrow

The largest part of the human brain is the cerebrum What is main component of the bone and teeth Calcium Phosphate

The main constituent of hemoglobin is Transport Oxygen The main function of Hemoglobin is - Transport Oxygen.

Malaraia is a disease which effect the Spleen Leukemia is a disease of the Blood.

Rickets is a disease of the Bones.

ECG is used for the diagnosis of ailments of Heart. Food is normally digested in the Small intestines.

The main function of the kidney is To remove waste product from body The human cells contains 46 Chromosomes

Acquired immune-deficiency syndrome(AIDS)is caused by Virus The light with the longest wave length in the visible spectrum is Red.

In the electric bulb, the gas used is Inert.

Centigrade and Fahrenheit scales resemble at ( 40C). Study of insects is called Entomology.

The inner layer of the skin is called Dermis Nucleus of an atom has Neutrons and Protons

Marsh gas is Methane In fireworks the green flame is produced because of Barium

Nuclear fission is caused by the impact Neutron Atom Bomb is based on principal of Nuclear Fission.

Glass is made from the mixture of Sand and Salt. Permanent hardness of water may be removed by the addition of Sodium

Carbonate. P.V.C is obtained by the polymerization of Vinylchtoride

The pursuit form of iron is Cast Iron The element found on the surface of the moon is Titanium

One joule is equivalent to-10 ergs


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The most efficient engine is Electric Wisdom teeth normally grow during the age of- 17- 30 years

The yellow colures of urine is due to the presence of Urochrome. Life of RVC in human blood is of 120 days.

How many teeth are known as milk teeth in human beings 20. Colure of the skin due to presence of -Melanin

Bile juice secreted by -? The smallest cell in the human body are Blood cells. Food is mainly digested in small intestine.

The number of ribs in human body is 24

The smallest bone in the human body is Stirrup Total number of bones in human skill are- 30

The hitting element in an electric iron is made of Tungsten. A nuclear reactor uses as fuel Uranium.

The Velocity of light was first measured by Roemer. The purity of milk is checked by Lactro meter.

The hottest part of the flame lies in its Non luminous Zone. The first life came on this earth In Water

An object weights maximum in Vacuum

Which is the semiconductor Silicon Ic Chips for Computers are usually made of Silicon A device used for converting AC into DC is

called-Rectifier. The volume Urine produced in an adult human every 24 hours is-1.5Liters.

The average Gestation period of Sheep is 150 days. The Smallest possible unit of a comical compounds is Molecule

The Vitamin which contains Cobalt is B12 The first metal to used by man was Copper

All acid essentially contain the element Hydrogen The main active continent of tea and coffee is Caffeine.

Pencil lead is made up of Graphite.

The human body contains the maximum amount of water.

CSIR NET JRF: Key Points to know for Paper-I

Which gases ifs filled in balloons Helium. Rickets occurs due to the deficiency of Vitamin A

Rocket launched station in Life-expectancy Sriharikota A lemon is sour is because of Citric acid

Animals having hair and giving birth to young ones are called Mammals Resistance in Series R=R1+R2+R3+R..

Resistance in Parallel 1/R=1/R1+1/R2+1/R3 Sound travels the fastest in Steel

Tuberculosis (T.B) is caused by Bacteria Temperature C/100=F-32/180=K-273.15/100

Cows milk is slightly yellowish in hue due to Riboflavin The blue color of the sky is due to Scattering of light

Clinical thermometer range 95F to 110F Gold is a noble metal because it is chemically less reactive

Which of the following is a bad conductor of electricity -Rubber


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RDX is an explosive In oxygen things burn Brightly

What is water is composed of Oxygen and Hydrogen Domestic electric fitting are connected in Parallel

Cooking utensils are made up of metals because metals are good conductors ofheat

The voltage of the domestic electricity is 220 volt The voltage of electicity used in factories is 440 volt Which is the major source of the energy in human diet Starch

A satellite is kept in circular orbit due to the gravitational force of the earth

Hair, on our body, are meant to Be a organs of defence Velocity of a body is Rate of changes of its position

Dialysis is done when Kidneys fail The speed of the Rocket Launcher is Greater than ---11.6 KM per second

The color of carrot is red is due to the presence of pigments An instrument to measure the density of liquid Hydrometer

The blood pressure of a normal human being is 120 /80 mm /Hg During sleep, mans blood pressure Fluctuates

Copper is mainly used in Electric wires

It is known as the silent killer Blood pressure Human bodys weight on the earth is maximum at Poles Which gas helps in extinguishing fire Carbon dioxide

Marble is the changed form of Limestone Insulin is given for the treatment of Diabetes

If a magnet is divided into two pieces Both the pieces become independentmagnets

Dehydration is loss of Water Which part of body typhoid affects Intestines

One pound is equivalent to 453 gms Diamonds are made up of Carbon

Hydrophobia may effect a person suffering from Dog bite

Carbon-dioxide as compared to air is Heavier Distance traveled by light in one year is called Light year

One is germicide Potassium permanganate Jaundice is a disease of Liver

Food poisoning is Caused by Micro- organism Formation of rust on iron is what kind of phenomenon Chemical

The good conductor of electricity Copper

Mercury is used in thermometers because it Expands uniformly Considered a balanced diet Milk

Scientific study of micro-organs Microbiology Pollutes the environment Carbon monoxide

Which bone related to head Skull When a piece of ice floats on water, its level Remains the same

Nights are cool when The nights are clear and the days are cloudy Who discovered the steam engine James Watt

Who invented Telephone Graham Bell Who discovered X-rays Roentgen

Who discovered Radium Marie Curie Who discovered Penicillin Alexander Fleming

Who discovered the cure forrabies Louis Pasteur The inventor ofTelevision is J. L. Baird

Phosphorus is a Non metal


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A plant with green leaves placed in red light with apprear Black Light from the sun reaches us in nearly 8 Minute

The Common refrigerant used in domestic refrigerator is Freon /ammonia A Fuse wire is characterized by high resistance and low melting point

Which metal is commonly used as an electromagnet Iron When ice melts in the beaker of water, the level of water in the beaker will remain

the same The dynamo converts- electrical energy into mechanical energy The oil in the wick of an oil lamp rises up due to capillary action

The flying of birds is a proof of Newtons first law

When milk is churned cream gets separated due to -centrifugal A red light used in traffic signal because It has longest wavelength and can be

easily noticed from a long distance The most convenient color combination that can be used for vehicle running day

and night is red and green Metals are good Conductor of electricity because they contains free electron

The phenomenon of total internal reflection may occur when light is passing from glass to air

The velocity of sound is maximum in a solid

The mirage is seen in the hot desert because the density of layer of air increasewith altitude The best conductor of heat among liquid is mercury

Sound of frequency below 20Hz are called InfrasonicsCSIR NET JRF: Key Points to know for Paper-I: Free Study Material

A man standing at the finish line is recording the time of a race competition by

means of a stop watch. He must start the watch when He sees flash of light comingfrom starting gun

If a shell from a canon bursts in the air, the total kinetic energy increase The pitch of sound is measured by its frequency

Alternating current is converted to direct current by a rectifier

When iron and wood are exposed to sunlight, the iron rod become hot quicklybecause of the greater thermal conductivity of iron

In diesel engines, ignition takes place by Compression Cloudy nights are warmer because Clouds prevent radiation of heat from the

ground into the air A electric bulb produce a loud sound when broken because the air rushes into

partial vaccum in the bulb

What is the approximate velocity of sound in air 800m/s. In deserts, clouds do not precipitate because of low humidity.

The ink of a pen leaks out in an aeroplane because pressure of ink insideis more than the ambient pressure

Coating of iron with zinc is known as Galvanization A piece of rock was brought from moon to earth, then Its weight alone changed

Which of the following is not a primary colour Black Which falls down faster in a vacuum All with fall down at same speed in a vacuum

because there will be no air resistance. Atmospheric pressure is measured by using an instrument call a/an barometer

The process of transfer of heat by matter but without actual movement of particlethen selves is called Conduction

In an electric kettle water becomes hot by Convection Tea will cool most easily in a Metal cup

The source of solar energy is Nuclear fusion


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A radar that detect the presence of an enemy aircraft uses Radio waves Light year is a unit of Distance

What is normal temp, of a human body 370 c A Celsius and a Fahrenheit thermometer give the same reading at a particular

temp. - -400C In which atmospheric layer are the communication satellites located? Ionosphere

In an earthen pot, cooling of water depends upon the All the above A fuse wire used to Prevent an unduly high electric current from passing througha circuit

The nucleus of an atom consists of Proton + electron

What happen if water is cooled from 80C to 0C? its volume decrease up to 40Cand then Increase

Which of the following is a good conductor of heat but bad conductor of electricity Mica

A sudden fall in a barometer reading indicates Storm Sound travel with a different speed in different media. In what order does the

velocity of sound increase in these media? Air, water and iron which part of the sun is visible during total solar eclipse? Corona

When a pencil is partly immersed in water in a beaker and held in a slanting

position, the immersed portion appears Bent towards the water surface the three primary colour are Blue, green, and red Which part of a camera is analogous to the retina in the human eye? Film

When a person walking in bright sunlight enter a dark room, he is not able to seeclearly for a little while because the iris unable to dilate the pupil immediately

In electric fittings, the wires are earthed because In case of a short circuit,current passes to the earth.

To an astronaut, the outer space appears Black Which of the following metal is used in aircraft? -Palladium

A transformer is used to Increase of decrease AC voltage The element used in an electric filament is Tungsten

The sky is blue in colour due to dispersion of light

When a ship floats on water The mass of water displaced is equal to the mass ofthe ship

Important Facts about Human Body

Length of alimentary canal Approximately 8 meters

BMR (Basal metabolic rate) 1600 K.cal/day

Number calls in body 75 trillion

Longest bone Femur (thigh bone)

Smallest bone Ear ossicle, stapes

Weight of brain 1400 gms


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Blood volume 6.8 litres (in 70 kg body)

Normal B.P 120/80 mm Hg

Number of R.B.C(a) In male: 4.5-5.0 million/cubic mm(b) In female: 4.0-4.5 million/cubic mm

Life span of R.B.C 120 days

Normal W.B.C count 5000-10000/cubic mm

Life span of W.B.C 3-4 days

D.L.C (Differential leucocyte count)

(a) Basophils-0.5-1%(b) Eosinophils-1-3%(c) Monocytes-3-8%(d) Neutrophils-40-70%(e) Lymphocytes-2-25%

Blood platelets count 2,00,000-4,00,000/cubic mm

Haemoglobin(a) In male: 14-15.6 gm/100 c.c of blood(b) In female: 11-14 gm/100 c.c of blood

Hb content in body 500-700 gm

Universal blood donor O Rh-ve

Universal blood recipient AB

Blood clotting time 2-5 minutes

Average body weight 70 kg

Normal body temperature 98.4.F or 37.C

Breathing rate 16-20 minutes

Dental formulaadult:2123/2123=32child: 2120/2120=22 milk teeth

Number of cranial nerves 12 pairs

Number of spinal nerves 31 pairs

Largest endocrine gland Thyroid

Gestation period 9 months (253-266 days)

Normal heart beat 72-75/ minutes

Largest gland Liver

Largest muscles in the body Gluteus maximus (Buttock muscle)

Largest smooth muscle Uterus of pregnant women

Smallest muscles in the body Stapedius


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Largest artery Abdominal aorta

Largest vein Inferior venacava

Largest W.B.C Monocyte

Smallest W.B.C LymphocyteGreatest regeneration power In liver

Longest nerve Sciatic

Longest cell Neuron (nerve cell)

Menstrual cycle 28 days

Menopause age 45-50 years

Minimum regeneration power In brain cell

Minimum distance for proper vision 25 cm

Type of placenta Haemochorial (Chorioallantoic)

Pulse rate 72/minute

Volume of semen 2-4 ml/ejaculation

Normal sperm count 200-350 million/ejaculation

ESR (normal Erythrocyte sedimentation rate) 4.10 min/hour

Thinnest skin Conjunctiva

pH of gastric juice 1.4

pH of urine 6.0

pH of blood 7.35-7.45

Well Known Indian Scientists

Aryabhatta: He lived between 476 and 520 A.D. He was a great

mathematician and an astronomer. His contributions include about themovement of earth around the Sun, determination of various physical

parameters of various celestial bodies, such as diameter of Earth andMoon. He laid foundations of algebra and pointed out the importance

of zero. The first Indian satellite was named after him.

Bhagavantam: His contribution to radio astronomy and cosmic rays

in noteworthy. An associate of Sir C.V.Raman, Dr.S.Bhagavantam was


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scientific adviser in the Ministry of Defence and Director General ofDefence Research Development Organization.

Bhaskaracharya: Born in 1114 A.D., bhaskaracharya was a greatHindu mathematician and Astronomer. His work 'Sidhanta Siromani'

consists of two parts of mathematics and two parts of astronomy. Hehad a foresight on the modern theory of conventions.

S.S. Bhatnagar: A great Indian Scientist who lived between 1895 and1955. He was the first Director General of Council of Scientific and

Industrial Research. Under his directorship, many research

laboratories were established throughout India.

J.C.Bose: He was an eminent Physicist and Botanist. He founded Bose

Research Institute, Calcutta. He invented Cresco graph and lived

between 1858 and 1937.

S.N. Bose: He became well-known when he expounded the BoseEinstein theory which deals with the detection of a group of nuclear

particles - named after him 'Boson'. His contribution to Planck's Law is

laudable. He died in 1974.

Dr. S.Chandrasekhar: An Indian-born American, who won Nobel Prize

for Physics in 1983. He is an Astrophysicist. His theory of StellarEvolution - the birth and death of stars is 35 years old. His first

discovery was laughed at. After three decades, it was recognised andtoday he is a Nobel Laureate. According to his theory, the old stars

just collapse and disappear in the light of denser stars of low light

popularly called Chandrasekhar Limit.

Charaka: He lived between 80 and 180 A.D. He was a court physician

of King Kanishka. His writings on Hindu Medicine are invaluable

Dhanvantri: He was a great physician during the period of

Chandragupta Vikramaditya. His period was between 375 and 413 A.D.

Hargobind Khorana: He created an artificial gene and deciphered

genetic code. He was awarded Nobel Prize for Medicine in 1968.

Homi J.Bhaba: He largely contributed to the development of Atomic

Physics and he was primarily responsible for setting up of Nuclearreactors in India. He published important papers on Quantum Theory,

Cosmic Rays, Structure of atom, etc. He was the first Chairman of


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Atomic Energy Commission. He died in a plane crash in 1966 overAlps.

Joshi: Prof. S.S.Joshi's works on physical and chemical reaction underelectrical discharge on active nitrogen, colloids, hydrogen peroxide are

noteworthy

Nagarjuna: A great Buddhist Philosopher and Chemist. He mentioned

about crecibles, sublimation, colouring process etc. His works are stillavailable in China and Tibet. His theory on extraction of copper and

metallic oxides are mention-worthy.

Nag Chowdhury B.D: An eminent Indian Nuclear Physicist known allover the world.

Narlikar: J.V.Narlikar was the co-author of Hoyle-Narlikar theory ofcontinuous creation which supplies missing links in Einstein's theory of

Relativity. Hoyle and Narlikar have shown that the gravitation isalways attractive and there is no gravitational repulsions.

Raja Ramanna: A great nuclear scientist, who was instrumental tostage India's first Nuclear explosion at Pokharan range in 1974.

Sir C.V. Raman: First Indian Scientist to receive Nobel prize forphysics in 1929 for his invention 'Raman Effect'. His study of crystal

structure is of unique importance. He founded Raman ResearchInstitute at Bangalore.

Sir C.P.Roy: Author of 'Hindu Chemistry'. He founded Indian Chemical

Society and Bengal Chemical and Pharmaceuticals Ltd. He has donegood work on nitrous acid and its salts. He lived between 1861- 1944

AD.

Prof. V.Ramachandra Rao: Direction of Indian Scientific Satellite

Project (ISSP) at Peenya near Bangalore

Saha Dr.Maghnad: Late Palit Prof.of Physics, University College of

Scientific and Technology, Calcutta University well-known for hisresearches in nuclear physics, cosmic rays, spectrum analysis and

other branches of theoretical physics. He lived from 1893 to 1956.

Srinivas Ramanujam: A mathematical wizard, contributed much tonumber theory, theory of partitions and theory of continuous fractions.


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He lived between 1887 to 1920 AD. His birth centenary was celebratedin 1987.

Satish Dhavan: He was chairman of Indian Space ResearchOrganisation. He was instrumental to take India into space age by

launching Aryabhatta in 1975.

Susruta: A fourth century Hindu Surgeon and Physician. He had

written an important book on medicine and on medical properties ofgarlic.

Varahamihira: An Indian astronomer and astrologer of 6th Century

A.D. He was a mathematician and philosopher. He was one of the ninegems of Vikramaditya.

Units of Measurement

Ampere Electric current

Angstrom Wave-length and also lengths of atomic dimensions

Bar Atmospheric pressure

Becquerel Radioactivity

Bel Intensity of Sound

Calorie Quantity of Heat

Candela Luminous intensity

Candle power Illuminating power of source of light

Celsius (Centigrade) Temperature

Coulomb Electric Charge

Decibel Intensity of sound (1/10th of Bel)

Dyne Force

Electron-volt Energy

Erg Work or Energy

Fahrenheit Temperature


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Farad Electric Capacitance

Faraday Electric Charge

Fathom Depth of water

Foot Candle BrightnessGauss Magnetic Induction

Henry Inductance

Hertz Frequency

Horse-power Power

Joule Work or Energy

Kelvin Thermodynamic temperature

Kilogram Mass

Knot Speed of Ship and Aircraft

Lambert Brightness

Light Year Stellar Distance

Lumen Luminous flux

Maxwell Magnetic flux

Metre Length

Mole Amount of Substance

Nautical Mile Distance in Navigation

Newton Force (metric)

Newton metre Work

Oersted Magnetic Intensity

Ohm Electrical Resistance

Pascal Stress

Poise Viscosity

Quintal Weight (metric)

Radian Plane Angle

Second Time

Tesla Magnetic Flux Density

Volt Electric Potential


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Watt Power

Weber Magnetic Flux

SNo Name Medical Inventions

1 Ronald Rose Malaria Parasite2 Salk, Jonas E. Anti-polio Vaccine

3 Simpson and Harrison Chloroform

4 Waksman Streptomycin

5 Banting Insulin ( as a palliative for diabetes)

6 Barnard, Christian Replacing the human heart

7 Brahmachari, U.N. Cure of Kala-a-zar fever

8 Davy

Isolation of metals by electricity; studied

properties of chlorine

9 Domagk Sulpha drugs as bactericides

10 Eijkman Cause of Beri-Beri

11 FinsenDiscovered curative effect of ultra violet rays;

photography

12 Fleming, Alexander Penicillin (in 1929)

13 Harvey Circulation of blood

14 Hahnemann Homoeopathy (founder)

15Hopkins, Frederick

GowlandVitamin D

16 Jenner Smallpox Vaccination

17 Koch Tubercle Bacillus

18 Lainnec Stethoscope

19 Lister, Lord Antiseptic treatment

20 Pasteur, Louis Treatment of rabies; cure of hydrophobia

Name Composition Use


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Brass Cu(60% to 80%), Zn (40 to 20%) For making household utencils

Bronze Cu (75 to 90%), Sn (25 to 10%) For making coins, idols, utencils

German Silver Cu (60%), Zn (25%), Ni (15%) For making utencils

Magnelium Mg (5%), Al (95%) For making aircraft frameRolled Gold Cu(90%), Ni (10%) For making cheap ornaments

Monel metal Cu (70%), Ni (30%)For making alkali resistant

containers

Bell metals Cu (80%), Sn (20%) For making bells

Gun metal Cu (85%), Zn (10%), Sn(5%) Used for engineering purpose

Solder Sn(50-75%), Pb (50-25%) Soldering of metals

DuraliumAl (95%), Cu (4%), Mg (0.5%), Mn

(0.5%)

In aircraft manufacturing

Steel Fe (98%), C (2%) For making nails, screws, bridges

StainlessSteel

Fe (82%) Cr, Ni (18%) for making cooking utencils, knives

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