Assertion (A): The traffic on Indian roads, especially in cities, is too high.

Reason (R): Traffic on roads increases travel time and causes congestion, pollution and road accidents.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

The railway track system is based on which of the following?

1. Width of the track
2. Length of the track
3. Route of the track
4. Load of the track

Assertion (A): Railway system has been divided into 18 zones.

Reason (R): Indian Railways' huge size will put pressure on a centralised management system.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

The distance between rails in a metre gauge is …………… .

1. 1.67 m
2. 1 m
3. 0.762 m
4. 2 m