Which of these metals cannot be used to prepare hydrogen by the action of an acid?
A) Sodium. B)Iron. C) Calcium. D) Copper

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Solution

Copper. Option D
Since copper is less reactive than hydrogen, it is not able to displace hydrogen from dilute acids. The other metals being more reactive will displace hydrogen.

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Similar questions

Q. Which of these metals cannot be used to prepare hydrogen by the action of an acid?

(a) sodium
(b) iron
(c) calcium
(d) copper

Hydrogen may be prepared in the laboratory by the action of a metal on an acid.

(a) Which of the metals copper, zinc , magnesium or sodium would be the most suitable ?

(b) Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric would you choose ? Explain why you would not use the acids you reject.

Name the following

1. A metal below iron but above copper in the activity series of metals which has no reaction with water.

2. A metal which cannot be used for the preparation of hydrogen using dilute acids.

3. The salt formed when aluminium reacts with potassium Hydroxide, during the preparation of hydrogen from alkalis.

4. A gaseous reducing agent which is basic in nature

5. A compound formed between hydrogen and an element group 17[VIIA] - period 3.

Lead cannot be used in preparation of hydrogen using dilute acids. Why?

Give reason for the following

1. Nitric acid in the dilute form is not used in the laboratory preparation of hydrogen from metals.

2. Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.

3. Hydrogen and alkali metals of group [1A] react with copper [II] oxide to give copper.

4. Hydrogen is collected by the downward displacement of water and not even though it is lighter than air.

5. A Mixture of hydrogen and chlorine can be separated by passage through a porous pot

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Which of these metals cannot be used to prepare hydrogen by the action of an acid?A) Sodium. B)Iron. C) Calcium. D) Copper

Copper. Option DSince copper is less reactive than hydrogen, it is not able to displace hydrogen from dilute acids. The other metals being more reactive will displace hydrogen.

Which of these metals cannot be used to prepare hydrogen by the action of an acid?
A) Sodium. B)Iron. C) Calcium. D) Copper

Copper. Option D
Since copper is less reactive than hydrogen, it is not able to displace hydrogen from dilute acids. The other metals being more reactive will displace hydrogen.