3916: Why the Indian farmers plough their fields during the time interval between two crops?
(a) In order to keep the soil loose for further cultivation
(b) To increase the porosity of the soil
(c) To escape drought
(d) To prevent clodding
3917: In a question of a test paper, there are five items each under List-A and List-B. The examinees are required to match each item under List-A with its corresponding correct item under List-B. Further, it is given that:
(i) no examinee has given the correct answer
(ii) answers of no two examinees are identical
What is the maximum number of examinees who took this test?
(a) 24
(b) 26
(c) 119
(d) 129
3918: Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ?
(a) Methane, ethane, propane and butane
(b) Propane, butane, ethane and methane
(c) Butane, ethane, propane and methane
(d) Butane, propane, ethane and methane
3919: Indian Human Development Report does not give for each sample village
(a) Infrastructure and Amenities Index
(b) Education Related Index
(c) Health Related Index
(d) Unemployment Related Index
3920: Two men A and B have different basic salaries but get equal emoluments. Their allowances are 65% and 80% of their basic salaries respectively. The ratio of their basic salaries is:
(a) 13 : 16
(b) 8 : 9
(c) 12 : 11
(d) 80 : 65