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Byju's Answer
Standard XII
Chemistry
Preparation of Hydrogen
If M is a rea...
Question

If M is a reactive metal, then .................. will be evolved, when M reacts with dilute sulphuric acid.

A
hydrogen
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B
oxygen
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C
helium
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D
nitrogen
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Solution

The correct option is A hydrogen
Metals react with dilute acid to produce metal salt and and hydrogen gas is evolved.

Metal + dil. acid → Metal salt + hydrogen ↑

Hence, the correct option is A

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Q.

M is an element in the form of a powder. M burns in oxygen and the product obtained is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete each of the following sentences.

(a) If M is a metal, then the litmus will turn ...........

(b) If M is a non-metal, then the litmus will turn .........

(c) If M is a reactive metal, then ........... will be evolved when M reacts with dilute sulphuric acid.

(d) If M is a metal, it will form ........ oxide, which will form ....... solution with water.

(e) If M is a non-metal, it will not conduct electricity in the form of.........

Q.

Name the gas evolved when a metal reacts with a dilute acid.

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