1. In India, the Archaeans and the associated Dharwarian rocks cover nearly ......... area of the peninsula. ?

10%

30%

66%

95%

Answer: 66%

Explanation:


2. The solid materials (or pyroclasts) of different sizes are thrown out by 'volcanoes at the time of their eruptions. Pyroclasts consist of: ?

volcanic blocks, lapilli, & volcanic dust

volcanic dust & lapilli

lapilli

none of the above

Answer: volcanic blocks, lapilli, & volcanic dust

Explanation:


3. Rocks formed from molten magma are known as: ?

sedimentary rocks

igneous rocks

metamorphic rocks

none of these

Answer: igneous rocks

Explanation:


4. Stones used for rubble masonry must be: ?

soft

hard

high

heavy

Answer: heavy

Explanation:


5. Hardness & specific gr. of Pyrite lies between: ?

6 - 6.50 & 4.90 - 5.20 respectively

6 - 6.50 & 3.90 - 4.20 respectively

6 - 6.50 & 2.90 - 3.20 respectively

none of the above

Answer: 6 - 6.50 & 4.90 - 5.20 respectively

Explanation:


6. Dunes are: ?

wind-deposits made up primarily of sand grade particles

aeolian deposits

all the above

none of the above

Answer: all the above

Explanation:


7. Which of the following instruments may be used for the determination of the sp. gr. of minerals in geological laboratories: ?

Walker's steel yard balance

The beam balance

Jolly's spring balance

all the above

Answer: all the above

Explanation:


8. When pure Limestone simply recrystallises during the process of metamorphisms without any new mineral formation, the resulting rock is: ?

Dolomite

Anorthite

Marble

none of the above

Answer: Marble

Explanation:


9. Lithosphere consists of: ?

Atmosphere & crust

crust, mantle, & core

all the above

none of the above

Answer: crust, mantle, & core

Explanation:


10. Shingle is: ?

decomposed Laterite

obtained by crushing Granite

Water bound pebbles

air weathered rock

Answer: decomposed Laterite

Explanation: