In this Article, you will get -:
- 100 Physics Questions and Answers
- 100 Chemistry Questions and Answers
- 100 Biology Questions and Answers
This General Science questions Article covers almost all the important topics to be prepared for Railway Exams like Chemical Compounds, Acids & Bases, Physics Laws, Human Body, Viruses, Diseases, Vitamins, etc.
Once you are through with this General Science questions Article , you would be able to answer majority of the Questions to be asked in the General Science section of upcoming RRC Group D and RRB NTPC Exams.
All the best for your Preparations and Happy Learning.
Physics
Q1) Blades of a windmill possess , hence they are turned by a fast wind.
Ans -: Potential Energy
Q2) A dark-skinned man experiences , as compared to a fair skinned man.
Ans -: Less heat & Less cold
Q3) What device is used to break/complete an electronic circuit?
Ans -: Switch
Q4) What is the temperature at which both the Fahrenheit and the centigrade scales have the
same value?
Ans -: -40°
Q5) Acceleration acts always in the direction of the .
Ans -: Net force
Q6) The principle used in working of an atom bomb is .
Ans -: Nuclear Fission
Q7) What is the unit used to measure the depth of sea?
Ans -: Fathom
Q8) Astigmatism can be corrected by .
Ans -: Cylindrical lenses
Q9) Lambert’s Law isrelated to .
Ans -: Illumination
Q10) In a Battery, which energy is converted into Electrical energy?
Ans -: Chemical Energy
Q11) The longitudinal mechanical waves of less than 20Hz are called .
Ans -: Infrasonic
Q12) Distance of stars are measured in ?
Ans -: Light Years
Q13) Albert Einstein was awarded the Noble prize for .
Ans -: Photoelectric Effect
Q14) Electric Motor converts the Electric energy into .
Ans -: Electric energy to Mechanical energy
Q15) Robert Koch hasinvented the .
Ans -: Electron microscope
Q16) Force of attraction between the molecules of different substancesis called .
Ans -: Adhesive Force
Q17) Electrons in Good conductors are .
Ans -: loosely bound
Q18) One barrel of oil = litres. (approximately)
Ans -: 159
Q19) If a bar magnet is cut length wise into 3 parts, what will the total number of poles be?
Ans -: 6
Q20) If the body is hollow, then its centre of gravity lies?
Ans -: Outside the material
Q21) If the temperature inside a room is increased, the relativehumidity will .
Ans -: Decrease
Q22) In summer, the mirages are seen due to the phenomenon of .
Ans -: Total Internal Reflection
Q23) In the visible spectrum which colour has the longest wavelength?
Ans -: Red
Q24) In which medium sound travels faster?
Ans -: Solid
Q25) Insects can move on the surface of water without sinking due to .
Ans -: Surface tension of water
Q26) The Laws of Electrolysis were proposed by –
Ans -: M Faraday
Q27) Light travels in a .
Ans -: Straight line
Q28) What is used as a cooling agent in most of the world’s commercial nuclear power plants?
Ans -: Water
Q29) Nature of sound wave is ?
Ans -: Longitudinal
Q30) 1 fermi unit is equal to –
Ans -: 10⁻¹⁵m
Q31) How many basic S.I. units are there?
Ans -: Seven
Q32) What is the principle on which a transformer works?
Ans -: Mutual Induction
Q33) The distance between Earth and Sun is termed as –
Ans -: 1 Astronomical unit
Q34) Potential energy of your body is minimum when you .
Ans -: Lie down on ground
Q35) What is the freezing point (temperature) of Pure water?
Ans -: 32 F
Q36) What is the unit of measurement of an Angle?
Ans -: Radian
Q37) Radio waves of constant amplitude can be generatedwith an .
Ans -: Oscillator
Q38) Hooke’s law is related to
Ans -: Elasticity
Q39) Sudden fall in barometer isindication of .
Ans -: Storm
Q40) Water moving up a straw is an example of .
Ans -: Capillary Action
Q41) The blue colour of the clear sky is due to .
Ans -: Dispersion of Light
Q42) What is a magnetic field’s direction within a magnet?
Ans -: From South to North
Q43) The experiment demonstrating the existence of electromagnetic wave was first conducted by
Ans -: Heinrich Hertz
Q44) The filament string in an electric bulb is made of which metal?
Ans -: Tungsten
Q45) Drag is the force exerted by fluids.
Ans -: Friction
Q46) The hydraulic brake used in automobiles is a direct application of .
Ans -: Pascal’s Law
Q47) The image formed by convex lens in a simple microscope is .
Ans -: Virtual & Erect
Q48) What kind of mirror is used in motor vehicles near the driver’s seat?
Ans -: Convex Mirror
Q49) & are present in the nucleus of an atom.
Ans -: Neutrons and protons
Q50) The size of atomic nucleus is of the order of .
Ans -: 10⁻¹⁵ m
Q51) From the moon’s surface, Astronauts see a Black Sky. This is because of .
Ans -: Absence of Atmosphere on Moon
Q52) The specific resistance of a wire varies with its .
Ans -: Material
Q53) The speed of light will be decreased with the rise in the temperature of the medium. True or
False.
Ans -: False. (It remains unchanged)
Q54) Which is the strongest force in the nature?
Ans -: Nuclear Force
Q55) Which device is used to measure the temperature of the sun?
Ans -: Pyrometer
Q56) Which phenomenon occurs when light passes from a denser to rarer medium?
Ans -: Total Internal reflection
Q57) Which substances do not allow flow of charge through them?
Ans -: Insulators
Q58) The value of which quantity remains same in all system of units?
Ans -: Specific Gravity
Q59) What is the speed of sound in air?
Ans -: 332m/sec
Q60) The working of the quartz crystal in the watch is based on which effect?
Ans -: Piezoelectric Effect
Q61) Permanent magnets are made of .
Ans -: Steel
Q62) During a fog, the visibility is reduced. This is because of which phenomenon?
Ans -: Scattering of light
Q63) Weightlessness experienced in a spaceship is due to .
Ans -: Absence of Gravity
Q64) Which device is used to find submerged objects?
Ans -: SONAR
Q65) What converts the alternating current into direct current?
Ans -: Rectifier
Q66) Which element is used as a moderator in nuclear reactors?
Ans -: Graphite
Q67) Which device converts light energy into electric energy?
Ans -: Photoelectric cell
Q68) The unit of power of lensis called .
Ans -: Dioptre
Q69) What is the unit of Radioactivity?
Ans -: Curie
Q70) An object has to attain the velocity of to escape from earth’s atmosphere?
Ans -: 11.2 km/sec
Q71) What is the measuring unit of length of light waves?
Ans -: Angstrom
Q72) A short duration wave is known as –
Ans -: Pulse
Q73) When did Einstein propose that matter can be converted into energy?
Ans -: 1905
Q74) What is the SI unit of luminous intensity?
Ans -: Candela
Q75) What is the unit of magnetic flux?
Ans -: Maxwell
Q76) What is the unit of specific resistance?
Ans -: Ohm-metre
Q77) The wavelength of visible spectrum ranges from .
Ans -: 390-700 nanometres
Q78) A Washing machine works on the principle of –
Ans -: Centrifugation
Q79) When a ball is thrown upward, what happens to its Acceleration?
Ans -: It remains Constant
Q80) Magnifying glass is made of which type of lens?
Ans -: Convex lens
Q81) What colour will a red glass appear if it is heated in dark room?
Ans -: Green
Q82) What happens to the surface tension of the water when a detergent is added to it?
Ans -: Decreases
Q83) The value of ‘g’ (acceleration due to gravity) is maximum at ?
Ans -: at poles
Q84) Which instrument is used to measure altitudes in aircrafts?
Ans -: Altimeter
Q85) Which instrument is used to measure change in volume of substances ?
Ans -: Dilatometer
Q86) Which instrument is used to measure depth of ocean ?
Ans -: Fathometer
Q87) The power of electric circuit is measured with a .
Ans -: Wattmeter
Q88) Which instrument is used to measure the scattering of light by particles suspended in a liquid?
Ans -: Nephelometer
Q89) Which is more elastic – Steel or Rubber?
Ans -: Steel
Q90) Which is the only natural magnet?
Ans -: Magnetite
Q91) What Principle is used in the designing of ships and submarines?
Ans -: Archimedes Principle
Q92) Nuclear Fissions are initiated by .
Ans -: Neutrons
Q93) The wire in an electric heater is made up of .
Ans -: Nichrome
Q94) During Sonography which types of Waves are used?
Ans -: Ultrasonic waves
Q95) Diode Bulb was discovered by .
Ans -: Sir J. S. Fleming
Q96) Who gave the first experimental value of G?
Ans -: Cavendish
Q97) Who had showed that the electric and magnetic waves are equal in vacuum?
Ans -: James Clerk Maxwell
Q98) What is the escape velocity of Moon?
Ans -: 2.38 Km/s
Q99) Why does a liquid drop tend to assume a spherical shape?
Ans -: To minimize surface tension
Q100) Resistance of a Conductor is inversely proportionalto it’s .
Ans -: Cross Sectional Area
Chemistry
Q1) What is used in nuclear reactor as a moderator. It is also known as Heavy Water?
Ans -: Deuterium Oxide (D2O)
Q2) Which Metal is in liquid state at room temperature?
Ans -: Gallium
Q3) elements are non-metal.
Ans -: Electro-negative
Q4) What is known as Artificial Silk.
Ans -: Rayon
Q5) Nitrous Oxide (N2O) is also known as –
Ans -: Laughing Gas
Q6) Which compound is used to prepare water proof clothes?
Ans -: Calcium hydride
Q7) Which Nobel Gas is also known as ‘Stranger Gas’?
Ans -: Xenon
Q8) Which Acid is know as ‘Oil of Vitriol’?
Ans -: Sulphuric acid
Q9) For making of parachute, which polymeric substance used?
Ans -: Viscose
Q10) Acid rain is caused when the air is polluted by Gases.
Ans -: Nitrous Oxide & Sulphur dioxide
Q11) All noble gases are & .
Ans -: Colourless and Odourless
Q12) is used as a Water Purifier.
Ans -: Alum
Q13) Aluminium is extracted from which ore?
Ans -: Bauxite
Q14) The Process is used to synthesized Ammonia (NH3)?
Ans -: Haber’s Process
Q15) Which compound/acid commonly known as Aspirin?
Ans -: Acetylsalicylic Acid
Q16) gas used to fill Balloons.
Ans -: Helium
Q17) is also known as Baryta Water?
Ans -: Barium Hydroxide
Q18) Best sources for Vitamin D are –
Ans -: Sunlight & Fish liver
Q19) Which gas is the chief component of Bio-gas?
Ans -: Methane
Q20) is the purest form of Carbon found in Nature.
Ans -: Diamond
Q21) The Chemical name of ‘Washing Soda’ is –
Ans -: Sodium Carbonate
Q22) What is the Chemical name of Chromic Acid?
Ans -: Chromium trioxide
Q23) Chemical name of Picric Acid is –
Ans -: Tri Nitro Phenol
Q24) In Photography, which chemical used as a fixer.
Ans -: Sodium thiosulphate
Q25) What are used to control the chain reaction in a nuclear reactor?
Ans -: Cadmium rods
Q26) In sunlight, Chloroform is converted into , a poisonous gas.
Ans -: Phosgene
Q27) Which Vitamin contains Cobalt?
Ans -: Vitamin B12
Q28) is one of the most common preservatives used in food processing industry?
Ans -: Benzoic Acid
Q29) Which compounds are responsible for permanent hardness of water?
Ans -: Sulphates and Chlorides of Calcium and Magnesium
Q30) The temporary hardness of water is caused of because of which compounds?
Ans -: Bicarbonates of Calcium and Magnesium
Q31) Copper is extracted from which ore?
Ans -: Copper Pyrite
Q32) When there is , Dead organisms are transformed into petroleum and natural
gas.
Ans -: Absence of air
Q33) Deuterium is of Hydrogen.
Ans -: Isotope
Q34) the weight of iron is , when it is undergoing the process of ‘rusting’.
Ans -: Increases
Q35) Efficiency of the catalyst depends on its –
Ans -: Molecular State
Q36) Egg shell is made up of .
Ans -: Calcium Carbonate
Q37) Which Vitamins are Fat Soluble?
Ans -: A, D, E & K
Q38) Which was the First organic compound synthesized in a lab and it was done by whom?
Ans -: Urea by Friedrich Wöhler
Q39) Fuse wire is made up of .
Ans -: Lead and Tin
Q40) is used to coat Galvanised Iron.
Ans -: Zinc
Q41. Which Gases are used by sea divers for under water breathing?
Ans -: Oxygen & Helium
Q42. & gases are helpful for ripening of raw fruits.
Ans -: Ethylene & Acetylene
Q43. The found in an ore is known as Gangue.
Ans -: Impurities
Q44. Iron is extracted from which ore?
Ans -: Hematite
Q45. Kerosene is a mixture of .
Ans -: Aliphatic hydrocarbons
Q46. Which Element is used for making of Lead pencil.
Ans -: Graphite
Q47. The lightest metal is .
Ans -: Lithium
Q48. is the main ore of Mercury.
Ans -: Cinnabar
Q49. Which Metal is found in the highest proportion in earth’s crust?
Ans -: Aluminum
Q50. Mine explosions are mostly caused by mixing of Air & .
Ans -: Methane
Q51. What is the compound used to in Nail polish remover?
Ans -: Acetone
Q52. Natural rubber is a polymer derived from .
Ans -: Isoprene
Q53. The coating on non-stick cookware is of .
Ans -: polytetrafluoroethylene (PTFE) – TEFLON
Q54. The Nuclear Fusion on the Sun’s surface result into formation of Atoms.
Ans -: Helium
Q55. Organic Compounds are only soluble in .
Ans -: Non-polar solvents
Q56. is also know as “FOOL’S GOLD”.
Ans -: Iron Pyrite
Q57. In an Oxidation process happens.
Ans -: Loss of electrons
Q58. Oxides of metals are .
Ans -: Alkaline
Q59. Ozone is in nature.
Ans -: Diamagnetic
Q60. The chemical composition of paper is that of a .
Ans -: Cellulose
Q61. Paraffin wax is .
Ans -: Saturated hydrocarbon
Q62. In which type of Rocks is Petroleum (Fossil Fuel) is found?
Ans -: Sedimentary Rocks
Q63. is also called White Gold.
Ans -: Platinum
Q64. Which is the purest form of Iron?
Ans -: Wrought Iron
Q65. Which Ore is used to extract Radium?
Ans -: Pitchblende
Q66. Solder is an alloy of .
Ans -: Tin and Lead
Q67. Which Radioactive Isotope is used in Cancer treatment?
Ans -: Cobalt – 60
Q68. is the element common to all acids.
Ans -: Hydrogen
Q69. is created by Alloying Iron and Chromium.
Ans -: Stainless Steel
Q70. The lustre of a metal is due to .
Ans -: Presence of free electrons
Q71. Which Mineral element is found in chlorophyll?
Ans -: Magnesium
Q72. The most abundant element in the earth’s crust is –
Ans -: Oxygen
Q73. The term ‘catalysis’ was coined by .
Ans -: Jöns Jakob Berzelius
Q74. Which element is the primary reason for radioactivity found in human body?
Ans -: Potassium – 40
Q75. Germanium, an ultrapure metal is purified by which method?
Ans -: Zone refining
Q76. Tooth enamel is made up of .
Ans -: hydroxyapatite, a mineral compound of calcium and phosphate
Q77. Which gas is filled inside a Tube light?
Ans -: Mercury Vapour & Argon
Q78. is an aqueous solution of Acetic acid.
Ans -: Vinegar
Q79. Which Vitamins are Water Soluble?
Ans -: Vitamin B complex & Vitamin C
Q80. Silver turns black (Tarnish) because of itsreaction with .
Ans -: Sulphur
Q81. Melting of ice can be prevented with the use of –
Ans -: Gelatin
Q82. A Bee Sting contains which Acid?
Ans -: Methanoic Acid
Q83. An Orange contains Acid.
Ans -: Citric Acid
Q84. Etching of glass is done with the help of .
Ans -: Hydrofluoric acid (HF)
Q85. Which acid is used in soft drinks?
Ans -: Carbonic acid (H2CO3)
Q86. Silver Iodide is used as a ‘seed’ agent for making of –
Ans -: Artificial Rain
Q87. is used as a catalyst for the synthesis of Sulphuric Acid by Contact Process.
Ans -: Platinum (Pt)
Q88. Vanaspati Ghee is synthesized with the help of which catalyst?
Ans -: Nickle (Ni)
Q89. Swelling of bread takes place because of –
Ans -: Carbon dioxide
Q90. Cigarette lighters contain Gas.
Ans -: Butane
Q91. Which gas is used in fire extinguisher?
Ans -: Carbon dioxide
Q92. is termed as ‘Metal of Future’.
Ans -: Titanium
Q93. Safety matches are prepared using –
Ans -: Red Phosphorous
Q94. A Photoelectric cell contains metal.
Ans -: Selenium
Q95. Zinc Phosphide is used as?
Ans -: Rat Poison
Q96. Which is the hardest substance found in human body?
Ans -: Tooth Enamel
Q97. Ozone is an of Oxygen.
Ans -: Allotrope
Q98. Which Metal is naturally Anti-Bacterial?
Ans -: Copper
Q99. Which was the first element to be produced after Big Bang?
Ans -: Hydrogen
Q100. If you pour a handful of salt into a glass of water, the water level will .
Ans -: Go Down
Biology
Q1. Alcoholic drink contains .
Ans -: Ethyl Alcohol
Q2. Glucose in stored in the form of by Animals.
Ans -: Glycogen
Q3. Ascariasis is caused by .
Ans -: Round Worm
Q4. BCG vaccination (Bacillus Calmette Guerin) gives immunity from .
Ans -: Tuberculosis
Q5. Blood groups was discovered by –
Ans -: Karl Landsteiner
Q6. The first successful heart transplant in India was performed by –
Ans -: Dr. Panangipalli Venugopal
Q7. The oral polio vaccine was discovered by –
Ans -: Jonas Salk
Q8. Companion cells are unique to .
Ans -: Angiosperms
Q9. DNA stands for .
Ans -: Deoxyribonucleic Acid
Q10. Dog bite can cause rabies. Bite of which other animal can also cause rabies?
Ans -: Bat
Q11. Endocrine glands are also known as .
Ans -: Ductless Glands
Q12. The Small Pox vaccine was discovered by –
Ans -: Edward Jenner
Q13. Deficiency of iodine leads to .
Ans -: Enlargement of Thyroid Gland
Q14. First vaccine produced by bio-technology was used against which virus?
Ans -: Hepatitis-B
Q15. Turmeric is obtained from of a Plant.
Ans -: Stem
Q16. Genes are made by .
Ans -: Polynucleotides
Q17. Haematopoiesis occurs in .
Ans -: Bone marrow
Q18. Leprosy is also known as .
Ans -: Hansen’s Disease
Q19. A human skull has number of bones.
Ans -: 22 Bones
Q20. Deposition of which acid in the muscles leads to a feeling of fatigue in Humans?
Ans -: Lactic Acid
Q21. RBC’s count in the blood is increased when a person is having .
Ans: Polycythaemia
Q22. Where are the Lachrymal glands situated in the human body?
Ans: Eye Orbit
Q23. The red, blue and purple colours seen in plants is because of the pigment.
Ans: Anthocyanin
Q24. Which part of the human brain controls Motor skills of the body?
Ans: Frontal Lobes
Q25. What is the name the hormone that regulates the amount of glucose in the blood .
Ans: Insulin
Q26. Name the gas used for making vegetable ghee?
Ans: Hydrogen
Q27. Which is the largest gland in the human body?
Ans: Liver
Q28. The smallest functional unit of a kidney is the ?
Ans: Nephron
Q29. James D. Watson, a Nobel Prize winning scientist is expert in the field of .
Ans: Genetics
Q30. Polio is caused by a .
Ans: Virus
Q31. The flow of energy in the Energy Pyramid is always .
Ans: Upwards
Q32. Saliva helps in the digestion of .
Ans: Starch
Q33. Which Parent’s chromosome is used for sex determination test?
Ans: Father
Q34. The bio-gas used for cooking is a mixture of .
Ans: Methane & Carbon dioxide
Q35. The yellow colour of the human faeces is a result of the pigment called .
Ans: Urobilin
Q36. Which air pollutant causes the most serious health hazards?
Ans: Sulphur dioxide
Q37. Vitamin K is required for the synthesis of .
Ans: Prothrombin
Q38. Which compound is used in anti-malarial drug?
Ans: Chloroquine
Q39. Dental cavities are caused because of the deficiency of?
Ans: Fluorine
Q40. What is the process of filtering blood through an artificial kidney called?
Ans: Dialysis
Q41. Which is the first vaccine injected into a newly born baby?
Ans: BCG
Q42. Food poisoning is caused by .
Ans: Clostridium botulinum
Q43. Which hormone is used as an oral contraceptive?
Ans: Progesterone
Q44. The longest and largest bone in the human body is?
Ans: Femur
Q45. Which metal is present in haemoglobin?
Ans: Iron
Q46. What is the total number of Chromosomes found in the human gene?
Ans: 46
Q47. The PH value of human blood is?
Ans: 7.40
Q48. The plants, which grow under water stress conditions are called?
Ans: Xerophytes
Q49. During photosynthesis, Solar Energy is converted to .
Ans: Chemical energy
Q50. Which is the smallest bone in the human body?
Ans: Stapes
Q51. The study of Trees is called?
Ans: Dendrology
Q52. Who proposed the Theory of natural selection?
Ans: Dendrology
Q53. Turpentine oil is obtained from .
Ans: Resin from Pines
Q54. Upper most layer of skin is called?
Ans: Epidermis
Q55. Which is the only element found in Chlorophyll?
Ans: Magnesium
Q56. What are Bryophytes ?
Ans: Amphibious Plants
Q57. Which component of the Cell is called it’s ‘Kitchen’?
Ans: Chloroplast
Q58. What is known as ‘Suicidal bags of cell’?
Ans: Chloroplast
Q59. What is systolic and diastolic pressure in a healthy man?
Ans: 120mm & 80mm
Q60. Dermatology is the study of?
Ans: Human Skin
Q61. Which chemical is popularly used in Rat poison?
Ans: White Phosphorus
Q62. What is the Dental formula of man?
Ans: 2123/2123
Q62. What is the name of first cloned sheep?
Ans: Dolly
Q64. is the normal cholesterol level in human blood.
Ans: 180-200 mg/dL
Q65. A is the smallest structural and functional unit of nervous system.
Ans: Neuron
Q66. 99% percentage of water is lost during transpiration, True or False?
Ans: TRUE
Q67. Which enzyme is present in all members of the animal kingdom except Protozoa?
Ans: Amylase
Q68. Zika virus is carried by Mosquito.
Ans: Aedes
Q69. Tomato contains which acid?
Ans: Oxalic Acid
Q70. Which animal respire without having blood in them?
Ans: Oxalic Acid
Q71. Which cells acting as phagocytes are present in the liver?
Ans: Kupffer cells
Q72. Which cell organelles function as the power house of a living cell?
Ans: Mitochondria
Q73. A bite of a mad dog causes –
Ans: Hydrophobia
Q74. Which disease is known as ‘silent killer’?
Ans: High Blood pressure
Q75. Human saliva contains the enzyme known as .
Ans: Ptyalin
Q76. Which gland disappears during old age?
Ans: Thymus
Q77. The insect responsible for the spread of Kala-azar is –
Ans: Sand Fly
Q78. is known as the strongest natural fibre.
Ans: Silk
Q79. Which is known as graveyard of RBC’s ?
Ans: Spleen
Q80. The gland known as master gland in human body is the .
Ans: Pituitary gland
Q81. The process of cell division is known as –
Ans: Mitosis
Q82. Which part of the Plant body acts as the carrier of food and other substances to all its parts?
Ans: Phloem
Q83. Which is the sweetest sugar?
Ans: Fructose
Q84. The hearing function is associated with which part of the Human Brain?
Ans: Temporal Lobe
Q85. Which major chemical compound is found in human kidney stones?
Ans: Calcium oxalate
Q86. Which metal is present in Insulin?
Ans: Zinc
Q87. Thirst, hunger and sleep are controlled by which part of the brain?
Ans: Hypothalamus
Q88. Alcohol affects which part of human brain?
Ans: Cerebellum
Q89. Which part of human brain is the regulating centre for swallowing and vomiting?
Ans: Medulla Oblongata
Q90. Which part of the Human Eye changes it size based on the amount of Light?
Ans: Pupil
Q91. is the plant which yields biodiesel or biofuel.
Ans: Jatropha Curcas
Q92. The part of the human eye which regulates the quantum of light entering is –
Ans: Iris
Q93. Which salt is found in bone in largest amount?
Ans: Calcium Phosphate
Q94. What is the name of the test done to diagnose cancer?
Ans: Biopsy Test
Q95. The vitamin which is considered to be a hormone is –
Ans: Biopsy Test
Q96. Intake of which vitamin is recommended to improve blood coagulation?
Ans: Vitamin K
Q97. Who explained about the blood circulation for the first time?
Ans: William Harvey
Q98. Alexander Fleming invented .
Ans: Penicillin
Q99. Who is credited for producing first man-made Gene in a lab?
Ans: Dr. Hargobind Khurana
Q100. Xerophthalmia is a disease caused by lack of which vitamin?
Ans: Vitamin A
