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Standard VIII

Chemistry

Reaction of Metals with Acid

Select the co...

Question

Select the correct pair:

Nitric acid, oxygen gas

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Nitric acid, hydrogen gas

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Sulphuric acid, oxygen gas

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Sulphuric acid, hydrogen gas

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Solution

The correct option is D
Sulphuric acid, hydrogen gas

The salt 'iron sulphate' suggests that acid used will be sulphuric acid. When metal reacts with acid it gives salt and hydrogen gas.

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Similar questions

(a) Explain why metals usually do not liberate hydrogen gas with dilute nitric acid.
(b) Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.

Q. Given below are word equations. Convert them into chemical equations using symbols and valencies. Balance the equations. Use appropriate signs for gases and precipitates in the reaction.
i) Zinc Sulphide

+

Oxygen gas

\to

Zinc oxide solid

+

Sulphur dioxide gas
ii) Silver nitrate solution

+

Sodium chloride solution

\to

Silver chloride precipitate

+

Sodium nitrate solution
iii) Sulphur solid

+

Concentrated nitric acid

\to

Sulphuric acid

+

Nitrogen dioxide gas

+

Water
iv) Barium chloride Solution

+

Potassium sulphate Solution

\to

Barium sulphate Precipitate

+

Potassium chloride solution
v) Silver nitrate on heating

\to

silver metal

+

nitrogen dioxide gas

+

Oxygen gas.
vi) Aluminium hydroxide

+

Nitric acid

\to

Aluminium nitrate

+

Water.

Q. Rewrite the following by choosing the correct word from each pair in brackets.
Acids are compounds that contain (hydrogen/sulphur) atoms. Sulphuric acid is one such example. It is a (strong/weak) acid. It can be neutralised by (acids/alkalis) to form salts called (sulphites/sulphates).
Many (metals/non-metals) react with acids to give a gas called (hydrogen/oxygen). Acid also react with (carbonates/hydroxides) to give (hydrogen/carbon dioxide) gas.
Phenolphthalein turns (pink/colourless) in acids, while litmus turns (red/blue).

So if zinc + sulphuric acid 👉 Hydrogen gas.................................... so do Pumpkin or dark chocolate + Acid rain also gives Hydrogen

Q. When zinc reacts with dilute sulphuric acid, hydrogen gas is released.

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Select the correct pair:

The correct option is D Sulphuric acid, hydrogen gas The salt 'iron sulphate' suggests that acid used will be sulphuric acid. When metal reacts with acid it gives salt and hydrogen gas.

The correct option is D
Sulphuric acid, hydrogen gas

The salt 'iron sulphate' suggests that acid used will be sulphuric acid. When metal reacts with acid it gives salt and hydrogen gas.