Question

Handpicking method is effective in:

• A. Solid mixtures
• B. Liquid mixtures
• C. Gaseous mixtures
• D. All of these

Answer 1

The correct option is A

Solid mixtures

The explanation for the correct answer:

Option (A) Solid mixtures

• Handpicking is the most effective in solid mixtures.
• Because the impurities that we want to separate are visible to our eyes in the case of solid mixtures.
• For example separation of stones from rice or pulses, separating rotten apples from fresh apples.

The explanation for the incorrect answer:

Option (B) Liquid mixtures

• In liquid mixtures, separation can be done by using a separating funnel.
• For example separation of oil and water.

Option (C) Gaseous mixtures

• In liquid mixtures, separation can be done by using a fractional distillation
• For example separation of different gases from the air.

Option (D) All of these

• As liquid and gaseous mixtures can't be separated by using the handpicking method.
• Therefore, all of these options don't hold good.

Hence due to the visibility of impurities to naked eyes handpicking method is used for solid mixtures, option (A) is correct.