Assertion (A): Igneous rocks are called Primary rocks. Reason (R)… - Vidyadip

MCQ

Assertion (A): Igneous rocks are called Primary rocks.
Reason (R): Igneous rocks are formed by the so-lidification of hot molten magma.

A
Both A and R are true and R is the correct explanation of A.
✓
Both A and R are true and R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.

✓

Answer

Correct option: B.

Both A and R are true and R is not the correct explanation of A.

B

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion - Reason based questions." from ROCKS AND ROCK CYCLE→ROCKS AND ROCK CYCLE — all question types→Geography STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

Assertion (A): Himalayas, Alps are very high in elevation and have sharp peaks and steep slopes.
Reason (R): Old Fold Mountains have been subjected to denudation for a long period of time.

Assertion (A): Barkhans are stationary dunes.
Reason (R): Barkhans are formed transversely with the direction of the winds.

Assertion (A): Metamorphic rocks do not have fossils.
Reason (R): Metamorphic rocks are formed by the change of pre-existing rocks due to high heat and pressure.

Assertion (A): Landslide is a common phenomenon of Alps, Himalaya, Andes and Rockies.
Reason (R): These are young fold mountains under which plates are always in movement.

Assertion (A): A major volcanic belt is located along the mid oceanic ridge of Atlantic Ocean.
Reason (R): Volcanic eruption is closely associated with sea floor spreading.

Assertion (A): Most of the times lava activity is proved unprofitable to man.
Reason (R): Eruption often force people living near volcanoes abandon their land and houses.

Assertion (A): Construction of rail and road network is easier on the plains.
Reason (R): Plains are flat and levelled land.

Assertion (A): Mediterranean region receives winter rainfall.
Reason (R): Mediterranean region receives the effect of easterly winds in winter.

Assertion (A): Deltas are formed along the lower course of the river.
Reason (R): Erosion is the main work of the river in its lower course.

Assertion (A): Agriculture is the dominant occupa-tion of people in tropical monsoon region.
Reason (R): Topical monsoon region receives most of the rainfall from monsoon winds.