RRB Junior Engineer (JE) Sample Paper: General Awareness (General Science)-11

1. In high mountain regions bleeding through nose occurs because

(a) the pressure of the blood capillaries is higher than the outside pressure
(b) the pressure at high altitudes is greater than that of the plains
(c) the blood pressure increases at high altitudes
(d) the blood pressure fluctuates and causes the blood vessels to break

2. One litre of cool air weighs heavier then one litre of hot air because of the

(a) increased number of collisions between the molecules
(b) increased number of molecules at high temperature
(c) greater energy of molecules at high temperature
(d) lower energy of molecules at high temperature

3. Why does a liquid drop assuming a spherical shape ?

(a) because a sphere has the least surface for a given volume.
(b) because a sphere has the largest surface for a given volume surface tension.
(c) because intermolecular forces are strong in liquids.
(d) because intermolecular force are weak in liquids.

4. In which of the following example of motion, the body can he considered approximately, a point object :

(a) a railway carriage moving without jerks between two stations.
(b) a monkey sitting on top of a man cycling smoothly on a larger circular path.
(c) a spinning cricket hall that turns sharply on hitting the ground.
(d) both (a) and (b)

5. While running over a horizontal level road, the man holds the umbrella in the vertical direction. If he stops, then in order to protect himself from the rain he should hold it :

(a) still vertically
(b) inclined to the front
(c) inclined to the back
(d) at an angle of 45

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1(a), 2(b), 3(a), 4(d), 5(c)