The process of separating two immiscible liquids uses: MCQ with Answer and Explanation

The process of separating two immiscible liquids uses:
A. Separating funnel
B. Condenser
C. Centrifuge
D. Fractionating column
Answer: Option A
Solution (By JKSSB Mock Tests)
A separating funnel allows immiscible liquids to form layers; the denser liquid is drained from the bottom. Fractionating column is for miscible liquids with close boiling points, condenser for distillation, centrifuge for separating fine solids or liquids of different densities by spinning.

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Practice More chemistry Questions

Question #1
Plaster of Paris has the chemical formula:
A. 2CaSO₄·H₂O
B. CaSO₄·2H₂O
C. CaSO₄
D. CaSO₄·½H₂O

Correct Answer: Option D


Explanation:
Plaster of Paris is calcium sulfate hemihydrate, CaSO₄·½H₂O. It is obtained by heating gypsum (CaSO₄·2H₂O) at 373 K. It sets to a hard mass on mixing with water reforming gypsum. Option B (2CaSO₄·H₂O) is equivalent to CaSO₄·½H₂O but the conventional representation is CaSO₄·½H₂O. Option A is gypsum, D is anhydrous calcium sulfate. POP is used for making casts, statues, and as a building material.

This question belongs to: Science chemistry
Question #2
Which of the following is a saturated carbon compound?
A. C₂H₂
B. C₂H₄
C. C₃H₆
D. C₄H₁₀

Correct Answer: Option D


Explanation:
C₄H₁₀ (butane) follows CnH₂n+2, indicating no double or triple bonds, i.e., saturated alkane. C₂H₄ is ethene (alkene), C₃H₆ could be propene or cycloalkane (but alkene formula), C₂H₂ is ethyne (alkyne). Saturated hydrocarbons contain only single bonds and undergo substitution reactions.

This question belongs to: Science chemistry
Question #3
The pH of normal rainwater is slightly acidic, around:
A. 4.5
B. 5.6
C. 7.0
D. 8.0

Correct Answer: Option B


Explanation:
Normal rainwater is slightly acidic with a pH of about 5.6. This is due to the natural dissolution of carbon dioxide from the air into the rain droplets, forming weak carbonic acid (CO₂ + H₂O ⇌ H₂CO₃). Acid rain has a pH lower than 5.6 due to pollutants.

This question belongs to: Science chemistry