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Displaying 5 out
of 35
questions & answers.
Q1.
Choose the correct option.
- Sedimentary rocks have the following characteristics
- foliations
- stratified structure
- crystallisation
- Alluvial soil is ideal for growing
- tea and coffee
- rice and sugar came
- cotton and millets
- Rocks formed due to compaction and cementation of materials
- slate and graphite
- basalt and granite
- sandstone and limestone
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- (ii) Stratified structure
- (ii) rice and sugarcane
- (iii) sandstone and limestone
Q2.
Match the following.
| Column I | Column II |
| a. Shale | i. Metamorphosed coal |
| b. Marble | ii. Minute-sized mineral grains |
| c. Granite | iii. Intrusive igneous rock |
| d. Igneous | iv. Sedimentary rock |
| e. Humus | v. First rocks to be formed |
| f. Graphite | vi. Metamorphosed limestone |
| g. Basalt | vii. Makes the soil fertile |
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- (iv) Sedimentary rocks
- (vi) Metamorphosed limestone
- (iii) Intrusive igneous rock
- (v) First rocks to be formed
- (vii) Makes the soil fertile
- (i) Metamorphosed coal
- (ii) Minute-sized mineral grains
Q3.
Give one example of each of the following.
- Intrusive igneous rock
- Chemically formed sedimentary rock
- Mechanically formed sedimentary rock
- Decayed plant or animal matter that improves soil fertility
- Precious stone associated with extreme metamophism
- A crop that grows well in black soil
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- Granite
- Rocks salt
- Sandstone
- Humus
- Diamond
- Cotton
Q4.
Soil is called a renewable resource. Give reasons.
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answer not shownQ5.
Igneous rocks are called primary rocks. Give reasons.
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Igneous rocks are called primary rocks because they were the first rocks to be formed.
