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Types of Chemical Reaction

An example of...

Question

An example of a chemical reaction in which heat is evolved is:

A

Reaction between lead nitrate and potassium iodide

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B

Ammonium chloride and Barium hydroxide

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C

Reaction between sodium and water

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D

Boiling of water

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Solution

The correct option is C
Reaction between sodium and water

Sodium reacts explosively with water resulting in evolution of a large amount of heat.

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Similar questions

Q. The reaction between silver nitrate and sodium chloride is an example of a ______ reaction.

The reaction between lead nitrate and potassium iodide is an example of _______ .

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

+

\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

+

Nitrogen dioxide gas

+

Water
iv) Barium chloride Solution

+

Potassium sulphate Solution

\to

Barium sulphate Precipitate

+

Potassium chloride solution
v) Silver nitrate on heating

\to

+

nitrogen dioxide gas

+

Oxygen gas.
vi) Aluminium hydroxide

+

\to

Aluminium nitrate

+

Q. Give a chemical test to distinguish between the following pairs of chemicals.
(i) Lead nitrate solution and Zinc nitrate solution.
(ii) Sodium chloride solution and Sodium nitrate solution.

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