1946: Which one of the following approaches comes under the category of biotechnology?
(a) Use of living organisms or substances obtained from them in industrial processes
(b) Modernizing the commercial industries to produce products for use in biological research
(c) Use of modern technology to investigate biological disorders
(d) Use of industrial technology to increase the biosphere
1947: Assertion (A)
Lal, Bal and Pal formed extremist group in the Indian National Congress
Reason (R)
They were revolutionary leaders
(a) A and R both are incorrect
(b) A is correct but R is incorrect
(c) A and R are correct and R is the correct explanation of A
(d) A and R are correct but R is not the correct explanation of A
1948: The gas used for artificial ripening of green fruits is
(a) Carbon dioxide
(b) Ethane
(c) Hydrogen
(d) acetylene (ethyne)
1949: Among the following cities, which one is nearest to the Tropic of Cancer?
(a) Delhi
(b) Kolkata
(c) Jodhpur
(d) Nagpur
1950: Why DDT is banned in western countries?
(a) It remains in environment for a long time
(b) The insects are immunised
(c) It is a highly poisonous insecticide
(d) None of the above