Question

The components of water can be separated by

• A. Chemical method
• B. Physical method
• C. Both a and b
• D. None of these

Answer 1

The correct option is A

Chemical method

The explanation for the correct answer:-

Option (A) Chemical method

• Distillation, crystallisation, adsorption, membrane procedures, absorption and stripping, and oxidation are the typical chemical methods of isolation and purification.
• Since there is a need to separate components of a substance thus chemical methods are used.
• Each water molecule is a combination of two hydrogen atoms and one oxygen atom so water can decompose into elements only by chemical method, i.e. electrolysis.

The explanation for the incorrect answer:-

Option (B) Physical Method:

• Decantation and gravimetry are some of the physical methods which are used to separate two different physical entities, not for components of a single substance.
• This option is incorrect.

Option (C) Both a and b:

• The chemical method is used for the separation of components of water, not physical methods.
• This is incorrect.

Option (D) None of these:

• Since option (a) chemical method is correct thus this option is incorrect.

Hence, option (A) the chemical method is the correct answer.