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Properties of Acids

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Question

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Carbon burns in air to form ___ which dissolves in rain to produce _ acid.

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Solution

Carbon burns in air to form CARBON DIOXIDE which dissolves in rain to produce carbonic acid

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Q. Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas (A) and an alkaline solution. The solution on exposure to air produces a thin solid layer of (B) on the surface.
The gas A is:

Q. Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas (A) and an alkaline solution. The solution on exposure to air produces a thin solid layer of (B) on the surface.
Find out B

Fill in the blanks :

(a) ___ product when carbon is burnt in a limited supply of air or oxygen.

(b) Carbon monoxide burns in air with a ___ flame to form carbon dioxide.

(c) Carbon monoxide is a product of ___ combustion

(d) A mixture of 95 $%$ oxygen and 5 $%$ carbon dioxide is called ___

(e) Carbon monoxide is used as a ___ in the extraction of pure metals from their corresponding ores.

Q. Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas (A) and an alkaline solution. The solution on exposure to air produces a thin solid layer of (B) on the surface. When

C O_{2}

gas passed into the alkaline solution, then which of the following product will be formed?

Q. Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas

A

and an alkaline solution. The solution on exposure to air the produces a thin solid layer of

B

on the surface. Now that thin layer is peeled off and reacted with sulphuric acid and allowed to cool down and gain its water of hydration}. This compound is heated to

1000 K

to give a black coloured compound

X

along with an acidic gas (

Y

Y

in aqueous solution along with

H_{2} S

turn the solution yellow. Gas

A

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