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Granulated Zinc for Hydrogen

Classify the ...

Question

Classify the following as physical or chemical properties.
Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.

A

Chemical

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B

Physical

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C

Both

A

and

B

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D

None of these

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Solution

The correct option is A Chemical
It is a chemical property as electron exchange takes place and new compound forms in this reaction.
$Z n + 2 H C l \to Z n C l_{2} + H_{2}$

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Similar questions

Q. Question 18
Classify the following as physical or chemical properties.
a) The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
(b) Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.
(c) Metallic sodium is soft enough to be cut with a knife.
(d) Most metal oxides form alkalis on interacting with water.

Q. Question 18
Classify the following as physical or chemical properties.
a) The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
(b) Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.
(c) Metallic sodium is soft enough to be cut with a knife.
(d) Most metal oxides form alkalis on interacting with water.

Q. Question 1(b)
Classify the changes involved in the following processes as physical or chemical changes:

Dissolving sugar in water

Q. Question 1 (f)
Classify the following as chemical or physical changes:
f. Dissolving common salt in water

Q. Question 1 (b)
Classify the following as chemical or physical changes:
b. Melting of butter in a pan

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Granulated Zinc for Hydrogen

Standard VIII Chemistry

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