6. Iron nail that sinks in water will float in heavier liquids like
Answer:
(B) Mercury
Explanation:
An object floats if the liquid it is in is denser than the object. An iron nail is less dense than mercury, so it will float.
7. The density of sea water is ______ than that of fresh water.
Answer:
(A) Greater
Explanation:
Sea water contains dissolved salts, which makes it denser than fresh water.
8. Which one of these is a fiber?
Answer:
(D) All of these
Explanation:
Cotton, jute, and linen are all examples of natural fibers.
9. Which of these is not grown from seeds?
Answer:
(C) Rose
Explanation:
Rose plants are typically grown from cuttings, not seeds. Mango, brinjal, and guava are commonly grown from seeds.
10. Which one of the following is a non renewable resource?
Answer:
(A) Fossil fuels
Explanation:
Fossil fuels are non-renewable because they take millions of years to form and are used up much faster than they can be replaced.
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