4021: 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
4022: Consider the following statements:
1. The Nuclear Security Summits are periodically held under the aegis of the United Nations.
2. The International Panel on Fissile Materials is an organ of International Atomic Energy Agency.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
4023: Consider the following statements :
1. In India, Red Panda is naturally found in the Western Himalayas only.
2. In India, Slow Loris lives in the dense forests of the North East.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
4024: An accurate clock shows 8 O clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 O clock in the afternoon ?
(a) 150 degree
(b) 144 degree
(c) 168 degree
(d) 180 degree
4025: When the rice is boiled, it expands because:
(a) The starch gelatinises and swells
(b) The starch gets polymerised
(c) The grains absorb moisture and swell
(d) Sugars break down in the grains