Assertion (A): On the seventh or eighth day of every fortnight a neap tide, which is lower in height than a low tide, occurs.

Reason (R): The tide producing forces of the sun and the moon work in opposite direction causing a low tide.

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.

Which current is also known as the 'Black Stream'?

1. Atlantic current
2. Kuroshio current
3. Oyashio current
4. Newfoundland current

Which currents have created one of the world's richest fishing grounds?

1. Labrador current and Gulf stream
2. Labrador current and Irminger current
3. Oyashio current and Kuroshio current
4. Both (a) and (c).

Assertion (A): Warm currents flow from the low latitudes in Tropical Zones towards the high latitudes.

Reason (R): They bring warm water into cold water areas.

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.