Top most general science questions asked in government exam

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Here is some general science questions asked in government exam like bank po, SSC, Grup c etc.

  • The medicine ephedrin used in the treatment of cough, asthma and bronchitis, from where is obtained? – Ephedra
  • A particle is executing S.H.M. Then what is the graph of acceleration as a function of displacement? – Hyperbola 
  • An atom has 7 electrons in its M-shell and contains 18 neutrons in its nucleus. What is its mass number? – 35
  • Which metal is extracted by thermal reduction process? – Copper
  • An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest and what will be velocity? – Velocity is highest
  • A body rolling freely on the surface of the earth eventually comes, why does it to rest? – Because it suffers friction
  • By whom was the concept of dual nature of radiation proposed? – de-Broglie
  • In a bisexual flower if androcium and gynoecium mature at different time the phenomenon is known as which name? – Dichogamy
  • What is the a biological process in which glucose and fat is oxidised to librate energy? –Respiration
  • What is an example of Miscelles System here? – Soap + Water
  • Which is the Branch of science that deal with the improvement of human race by providing better environmental condition? – Euthenics
  • Aluminium surface are often ‘anodized’. This means deposition of a layer of which oxide? – Zinc oxide
  • Which Animal is also known as ‘Portuguese man of war’? – Physalia
  • A small drop falls from rest from a large height h in air. What is the final velocity? – Almost independent of h
  • Why does Molten sodium chloride conduct electricity? – Due to the presence of free ions
  • Which modification of root does not store food? – Stilt
  • The total energy of a particle vibrating in S.H.M. is proportional to which thing? –The square of its Amplitude
  • A gale blows over a house. The force due to the gale on the roof is in which direction? – In the upward direction
  • Why is Ail aqueous solution of copper sulphate is acidica in nature? – Because the salt undergoes hydrolysis
  • Oxygen released during photosynthesis of green plant comes from the breakdown of which thing? – Water
  • The pressure at the bottom of a liquid tank does not depend on which area? – Area of the liquid surface
  • Which compound transforms baking soda into baking powder? – KHC4H4O6
  • Water will be absorbed by root hairs, then how is when the external medium? – Hypotonic
  • Why is Weightlessness experienced in spaceship? – Due to absence of gravity
  • How is Perchloric acid prepared? – By the action of Concentrate sulphuric acid on potassium perchlorate
  • What is the Study of system of animal body which protects it from infection of various disease? –Immunology
  • A particle revolves round a circular path with a constant speed, how is the acceleration of the particle? – Along the radius
  • If a non-metal is added to the interstitial sites of a metal, then how does the metal become? –less malleable
  • Which is used as a gift in Japan? – Euplectella
  • A gas is enclosed in a container which is then placed on a fast moving train. What will be the temperature of the gas? – Remain unchanged
  • When will a hot body radiate maximum energy? – iIf its surface is black and rough
  • How many electrons are involved in the oxidation by KMnO4 in basic medium? – 4
  • Which chemical substance secreted by particular species of animal to attract another member of same species? – Pheromones
  • How is the heat transferred by the radiator of a refrigerator? – More than that at the freezer
  • Which compound of zinc is white when cold and yellow when hot? – ZnO
  • Pheretima posthuma is scientific name of which animal? – Earth worm
  • Merscuric sulphide dissolves in aqua-regia to form which compund? – HgCl2
  • An individual whose blood type is B may in an emergency donate blood to a person which blood groups? – AB or B
  • If the amplitude of a wave at a distance t from a point source is A, what will be the amplitude at a distance 2r? – A/2
  • In which sequence are the electromagnetic radiations in decreasing order of wave lengths? –Infrared, radio, X-rays, visible
  • Salts of which element provide colours to fireworks? – Strontium and barium
  • Which organ have the capacity of regeneration? – Liver
  • With the increase in temperature, what happens in the frequency of the sound from an organ pipe? – Increases
  • What is obtained when cadmium chloride is treated with water? – Cd(OH)
  • Which organ cannot be transplanted? – Brain
  • When a coin placed in a bowl of water is seen from above, how does it appears? – Raised from its position
  • What is formed when cadmium reacts with H2S? – CdS
  • Appetite and satiety centres of brain, where are present in? – Hypothalmus
  • Which gland disapear during old age? – Thymus
  • How is the matallic nature of transition elements is than that of alkali metals? – Less
  • Which types of waves are used in a night vision apparatus? – Infra-red-waves
  • When seen in green light, what will the saffron and green portions of our national flag appear? –Black and green respectively
  • The 3d transition series contains how many elements from atomic number? – 21 to 30
  • Which blood group is universal doner? – O
  • Which lanthanides are used in glass, blowers, goggles? – Pr, Nd
  • Why is the function of the collimator in a spectrometer? – To obtain a parallel beam of light
  • What is the smallest structural and functional unit of nervous system? – Neuron
  • Which compound is obtained when auric chloride reacts with sodium chloride? – Na[AuCl4]
  • What is systolic and diastolic pressure in a healthy man? – 120 mm and 80 mm
  • The refractive index of a piece of transparent quartz is the greatest for which light? – Violet light
  • Which part of human brain is the regulating centre for swallowing and vomating? – Medulla oblangata
  • By which Carbon and hydrogen are estimated in organic compounds? – Liebig’s method
  • If the refractive angle of a prism is 60° and the minimum deviation is 30°, then the angle of incidence is how many degrees? – 45°
  • What is present both in plant and animal? – Plasma membrane
  • What does mixture of CS2 and H2S on passing over heated copper give? – Methane
  • If the rotational velocity of a dynamo armature is doubled, what will then the induced emf? –Become double
  • Which is used in storage batteries? – Lead
  • What is the name of the poisonous gas formed by the interaction of acetylene and arsenic trichloride? – Lewisite
  • Which tissue take part in healing the wounds? – Epithelium tissue
  • When a body is earth connected, electrons from the earth flow into the body. What is its mean? –This means the body is Charged positively
  • Acetylene is used as an anaesthetic under which name? – Narcylene
  • In daily requirement basis which vitamin is required in largest quantity by the human body? –Vitamin C (Ascorbic acid)
  • When does not No current flows between two charged bodies? – If they have same potential
  • Denatured spirit is a mixture of ethyl alcohol, methyl alcohol and which other thing? – Pyridine
  • Consumption of fish is considered to be healthy compared to flesh of other animals why? –Because it contains polyunsaturated fatty acids
  • What is the reason for excessive solubility of ethyl alcohol in water? – Due to hydrogen bonding with water
  • Through which are the characters are transferred from parents to progeny? – DNA
  • A radioactive substance has a half life of 4 months. In how many months will three fourths of the substance will decays? – 8 months
  • The cause of fractional atomic weights of elements? – The presence of Isotopes
  • Which gas, is used for artificial ripening of fruit? – C2H4
  • Which branch of biology deal with the study of heredity? – Genetics
  • The maximum number of photo electrons released in photocell is independent of which thing? –Frequency
  • A fruity smell is produced by the reaction of C2H5OH with which formula? – CH3COOH
  • By which can Evolutionary development of a species be best studied? – Studying fossils of this speciesWhat is the process by which vegetable ghee is manufactured? – Hydrogenation
  • Early atmosphere contained methane and other hydrocarbons they have been now replaced by which gas? – Carbon dioxide
  • For an electric dipole, how are the field at a point on the equatorial line and the dipole moment? –In opposite direction
  • If a diamagnetic substance is brought near north and south pole of a oar magnet, what will be then? – It is Repelled by poles
  • The word “biodiversity” is a combination of which two words? – Biology and diversity
  • Which thing is the sweetest natural sugar? – Lactose
  • Jaundice in human beings affects which of the body part? – Liver
  • Cathode rays enter an electric field normal to the lines of force. Then how is their path in the electric field is– – Parabola
  • How many orangutans disappear each year as result of palm oil farming? – 5000
  • The sky wave propagation is suitable for radio waves of frequency form how many MHz? – From 2 MHz to 30 MHz
  • Which is considered a hot-spot of biodiversity in India? – Western Ghats
  • What is a glass sided tank, bowl in which aquatic animals live? – Aquarium
  • Deficiency of which vitamin causes xerophthalmia? – Vitamin A
  • If a wire of resistivity p is stretched to double its length, then what will change in its new resistivity? – Not change
  • Crop sown soon after the onset of south-west monsoon in India, what is this called? – Kharif
  • Thermal decomposition of alkanes is known as which name? – Cracking

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