If the barometric height gradually falls, it indicates :

1. a possibility of a storm or cyclone
2. extremely dry weather
3. weather will remain the same.
4. a possibility of rain.

The atmospheric pressure …………… with rising altitudes as the density of air …………… .

1. increases, decreases
2. decreases, increases
3. decreases, decreases
4. increases, increases

Assertion (A) : As we move to higher altitudes, at times nose bleeding occurs.

Reason (R) : The reason for nose bleeding is excess of atmospheric pressure over the blood pressure.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : Water is not used as a barometric liquid because it does not stick to the glass surface.

Reason (R) : Barometric liquid should be such that should neither wet nor stick to the glass surface.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false