1. Anthracite is a coal which is formed by the metamorphism of woody materials. Anthracite contains carbon upto the extent of: ?

70%

70-90%

92-98%

none of the above

Answer: 92-98%

Explanation:


2. The tendency of a stone to split along certain parallel planes, is known as: ?

texture

fracture

cleavage

structure

Answer: cleavage

Explanation:


3. Maximum permissible water absorption values for Shale & Gneiss (in that order), are: ?

07.50% & 10.00%

10.00% & 01.00%

01.00% & 10.00%

none of the above

Answer: 10.00% & 01.00%

Explanation:


4. Stratosphere is the: ?

lowermost atmospheric zone

uppermost atmospheric zone

atmospheric zone extending between the troposphere & ionosphere

none of the above

Answer: atmospheric zone extending between the troposphere & ionosphere

Explanation:


5. Stratoscope extends from the upper boundary of the troposphere to: ?

115 km above the earth surface

400 km above the earth surface

700 km above the earth surface

none of the above

Answer: 115 km above the earth surface

Explanation:


6. Which of the following is true for Himalaya mountains: ?

they are tectonic mountains

they are complex in their character showing all sorts of structural complications in their constitution

they owe their origin to orogenic forces

all the above

Answer: all the above

Explanation:


7. As per Mohs's scale, the hardnesses of Corundum & Diamond (in that order) ?

9 & 8

8 & 9

9 & 10

10 & 9

Answer: 9 & 10

Explanation:


8. Granite & Rhyolite (silica 70-80%) are the examples of: ?

acidic igneous rocks

basic igneous rocks

ultra-basic igneous rocks

sedimentary rocks

Answer: acidic igneous rocks

Explanation:


9. Gneiss is resulted from the metamorphic transformation of: ?

dolomite

shale

granite

none of the above

Answer: granite

Explanation:


10. The phenomena of pealing off of curved shells or layers from rocks under the influence of thermal effects is called: ?

spheroidal weathering

chemical weathering

exfoliation

none of the above

Answer: exfoliation

Explanation: