2276: Assertion (A) :
Ganga Plain is the most densely-populated part of India.
Reason (R) :
Ganga is the most harnessed river of India.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
2277: Neem tree has acquired industrial importance as a source of
(a) biopesticide and anti-fertility compound
(b) anti-fertility compound, biofertilizer and anti-cancer drug
(c) biofertilizer, biopesticide and anti- fertility compound
(d) anti-cancer drug, biopesticide and biofertilizer
2278: With reference to the latest developments in stem cell research, consider the following statements:
1. The only source of human stem cells are the embryos at blastocyst stage
2. The stem cells can be derived a without causing destruction to blastocysts
3. The stem cells can regenerate themselves in vitro virtually forever
4. Indian research centres also created a few cell lines which can be developed into many types of tissues
Which of these statements are correct?
(a) 1, 2, 3 and 4
(b) 1, 2 and 3
(c) 1, 2 and 4
(d) 3 and 4
2279: The given map refers to the kingdom of
(a) Akbar at the time of capture of Khandesh in 1601
(b) Akbar at the time of his death in 1605
(c) Aurangzeb at the time of capture of Hyderabad
(d) Aurangzeb at the time of his death in 1707
2280: Consider the following chemicals :
1. Benzene
2. Carbon tetrachloride
3. Sodium Carbonate
4. Trichloroethylene
Which of the above is/are used as dry cleaning chemicals ?
(a) 1 Only
(b) 2 Only
(c) 1, 2 and 4 Only
(d) 1, 2, 3 and 4