Question

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class 9 th​

Answer 1

Answer:

a1) a

2) c

3) a

4) a but not sure

Explanation:

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Answer 2

Answer:

i) Who was the first scientist to use the term elements?

Answer :-d) None of these

But, Niels Bohr was the first scientist to use the term elements.

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ii) Which of the following property is not shown by metals?

Answer :- d) Lustre

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iii) is the only metal that is liquid at room temperature

Answer :- a) Mercury

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iv) The colourless gas with the smell of rotten egg is found in

Answer :- a) Group 1

hydrogen sulfide

What is hydrogen sulfide? Hydrogen sulfide (H2S) is a colourless gas with a characteristic odour of rotten eggs which being denser than air may pool in low areas in still conditions.

Explanation:

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