4211: In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique?
1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.
2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.
3. Genetic engineering can be used to create microorganisms specifically designed for bioremediation.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
4212: That the per capita income in India was Rs. 20 in 1867-68, was ascertained for the first time by
(a) M. G. Ranade
(b) Sir W. Hunter
(c) R. C. Dutta
(d) Dadabhai Naoroji
4213: Atoms of the same element having the same atomic number but different atomic weight are called
(a) Isobars
(b) Isotopes
(c) Polymers
(d) Isomers
4214: The Indian National Army (INA) came into existence in 1943 in
(a) Japan
(b) Burma
(c) Singapore
(d) Malaya
4215: With regard to the transmission of the Human Immuno deficiency Virus, which one of the following statements is not correct ?
(a) The chance of transmission from female to male are twice as likely as from male to female
(b) The chances of transmission are more if a person suffers from other sexually transmitted infections
(c) An infected mother can transmit the infection, at childbirth and by breast feeding
(d) The risk of contraction infection from transfusion of infected blood is much higher than an exposure to contaminated needle