61.
Which of the following metals remain in liquid for under normal conditions?
A. Radium B. Zinc
C. Uranium D. Mercury
Answer & Explanation
Answer: Option D
Explanation:
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62.
Potassium Permanganate is used for purifying drinking water, because
A. it is a sterilising agent
B. it dissolves the impurities of water
C. it is a reducing agent
D. it is an oxidising agent
Answer & Explanation
Answer: Option D
Explanation:
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63.
Which of the following is an element?
A. Ruby B. Sapphire
C. Emerald D. Diamond
Answer & Explanation
Answer: Option D
Explanation:
No answer description available for this question