4276: 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
4277: Which one of the following is caused by the expression of a recessive gene present on sex chromosome ?
(a) Rheumatism
(b) Nervous shock
(c) Muscular dystrophy
(d) Cerebral hemorrhage
4278: Which one of the following States of India has passed a legislation (in 1996) making the maintenance of one's parents mandatory?
(a) Kerala
(b) West Bengal
(c) Maharashtra
(d) Himachal Pradesh
4279: A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, the number of revolutions made by the larger wheel will be:
(a) 12
(b) 49
(c) 9
(d) 4
4280: Which one of the following is a fast growing tree?
(a) Teak
(b) Eucalyptus
(c) Banyan
(d) Coconut