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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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