2956: Which of the following chemicals in automobile-exhaust can cause cancer?
(a) Carbon monoxide
(b) Polycyclic hydrocarbons
(c) Lead
(d) Oxides of nitrogen
2957: India's contribution to Mathematics includes:
1. Number system
2. Decimal system
3. Concept of zero
(a) 1, 2 & 3
(b) 1 & 2
(c) 2 & 3
(d) 1 & 3
2958: Which one of the following is used as an anti-freeze for the automobile engines?
(a) Propyl alcohol
(b) Ethanol
(c) Methanol
(d) Ethylene glycol
2959: A report says - The number of bus accidents is more than that of car accidents, the number of car accidents is less than the number of truck accidents, the number of truck accidents is less than the number of bus accidents. Which of the following conclusions do you draw from this report?
(a) There are more buses on road
(b) There are more trucks on the road
(c) Truck drivers are very careless
(d) None of these
2960: A quantity is found to vary in the order 9, 16, 25, 36, 49. What will be the next number in the order?
(a) 57
(b) 64
(c) 68
(d) 61