3511: What is the principle by which a cooling system (Radiator) in a motor car works ?
(a) Convection
(b) Conduction only
(c) Both conduction and radiation
(d) Radiation only
3512: Consider the following features of newer models of motor cars :
I. Radial tyres
II. Streamlined body
III. Multipoint fuel injection
IV. Catalytic converter with exhaust
Which of these features make the newer models of motor cars more fuel efficient ?
(a) I and II
(b) II and III
(c) II, III and IV
(d) I, III and IV
3513: Recently, which one of the following currencies has been proposed to be added to the basket of IMFs SDR?
(a) Ruble
(b) Rand
(c) Indian Rupee
(d) Renminbi
3514: Assertion (A) :
Sodium metal is stored under kerosene.
Reason (R):
Metallic sodium melts when exposed to air.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
3515: Which one of the following can one come across if one travels through the Strait of Malacca ?
(a) Java
(b) Singapore
(c) Bali
(d) Brunei