546: Haemophilia is a genetic disorder which leads to
(a) decrease in haemoglobin level
(b) rheumatic heart disease
(c) decrease in WBC
(d) non-clotting of blood
547: Which of the following crops are most suitable for cultivation under scanty rainfall conditions?
1. Horse gram
2. Rice
3. Mustard
4. Wheat
Select the correct answer from the codes given below:
(a) 1 and 2
(b) 2 and 4
(c) 2 and 3
(d) 1 and 3
548: Direct taxation was introduced by the ...... committee.
(a) Wanchoo
(b) Chetty
(c) Kaldor
(d) Raja Chelliah
549: A and B start from the same point and in the same direction at 7 a.m. to walk around a rectangular field 400 m x 300 m. A and B walk at the rate of 3 km/hr and 2.5 km/hr respectively. How many times shall they cross each other if they continue to walk till 12 : 30 p.m?
(a) Not even once
(b) Once
(c) Twice
(d) Thrice
550: How many of the following numbers are divisible by 132 ?
264, 396, 462, 792, 968, 2178, 5184, 6336