Test Series no. -2 on Science

Test series on Science


MCQ on Science for competitive exams 

(Answer Key on last page of test series)

101-Hydrogen spectrum was first explained by

(A) Niels Bohr

(B) Erwin Schrodinger

(C) Dalton

(D) None of the above


102- Which of the following produces more severe burns?

(A) steam

(B) boiling water

(C) hot water

(D) melting ice berg


103- The sudden fall of atmosphere pressure indicates.

(A) rain

(B) storm

(C) cold weather

(D) all of the above


104- Scurvy is a disease which is caused due to the deficiency of vitamin

(A) D

(B) K

(C) C

(D) A


105- The concept of ‘survival of the fittest’ was first discovered by

(A) Dalton

(B) Einstein

(C) Spencer

(D) Darwin


106- In man, the normal number of chromosomes is

(A) 23

(B) 46

(C) 48

(D) 50


107- Deficiency of vitamin D in children causes

(A) beriberi

(B) rickets

(C) scurvy

(D) goiter


108- The seeds of certain plants fail to germinate if they do not pass through the digestive tract of fruit eating birds. This is due to

(A) infertility

(B) hibernation

(C) seed coat impermeability

(D) all of the above


109- Sucrose content in sugarcane decreases

(A) if there is fluctuation in temperature

(B) if there is high temperature during the time of ripening

(C) if frost occurs during the period of ripening

(D) if high rainfall occurs during the period of growth of the plant


110- Blue Revolution is related to

(A) fish production

(B) milk production

(C) oil production

(D) none of the above


111- Who invented optical fiber?

(A) Dalton

(B) Percy L. Spencer

(C) Samuel Cohen

(D) Narinder Kapany


112- Green Revolution in India has so far been most successful in case of

(A) oil

(B) millets

(C) rice

(D) wheat


113- Tamiflu is a frontine drug against

(A) Birdflu

(B) AIDS Cancer

(C) Polio

(D) Pellagra


114- Why excessive heating and repeated use of cooking oil are most undesirable?

(A) loss and wastage of oil

(B) nutrient value of food is lost

(C) both A and B

(D) none of the above


115- Greenhouse effect is caused by

(A) nitrogen

(B) carbon monoxide

(C) carbon dioxide

(D) none of the above


116- Type metal used in printing press is an alloy of

(A) lead and silicon

(B) lead and copper

(C) lead and antimony

(D) all of the above


117- Sour taste of Coca cola is due to the presence of

(A) acetic acid

(B) phosphoric acid

(C) formic acid

(D) all of the above


118- Lac which is used as sealing wax is produced by

(A) mammals

(B) insects

(C) steam

(D) lac soil


119- Cancer is a disease where we find uncontrolled

(A) cell inflammation

(B) cell swelling

(C) cell division

(D) all of the above


120- Jonas Salk invented the vaccine for

(A) Cholera

(B) Typhoid

(C) Cancer

(D) Polio