71. IF x-1/x=5, then the value of x2+1/x2 will be
(a) 5
(b) 25
(c) 27
(d) 23
(a) 5
(b) 25
(c) 27
(d) 23
72.If a shopkeeper buys almonds at Rs. 250 per kg. and sells it at Rs. 10 per 50 gm. Then he
(a) losses 20%
(b) losses 25%
(c) gain 20%
(d) gains 25%
(a) losses 20%
(b) losses 25%
(c) gain 20%
(d) gains 25%
73.Match the following
(i) Otitis-------------1. Throat
(ii) Encephalitis----2. Ear
(iii) Laryngitis------3. Liver
(iv) Hepatitis-------4. Brain
(a) i-3, ii-4, iii-1, iv-2
(b) i-1, ii-2, iii-3, iv-4
(c) i-4, ii-3, iii-1, iv-2
(d) i-2, ii-4, iii-1, iv-3
(i) Otitis-------------1. Throat
(ii) Encephalitis----2. Ear
(iii) Laryngitis------3. Liver
(iv) Hepatitis-------4. Brain
(a) i-3, ii-4, iii-1, iv-2
(b) i-1, ii-2, iii-3, iv-4
(c) i-4, ii-3, iii-1, iv-2
(d) i-2, ii-4, iii-1, iv-3
74.Which gas has a smell like that of rotten eggs?
(a) Carbon monoxide
(b) Sulphur dioxide
(c) Sulphur trioxide
(d) Hydrogen sulphide
(a) Carbon monoxide
(b) Sulphur dioxide
(c) Sulphur trioxide
(d) Hydrogen sulphide