Caustic soda is the common name for: MCQ with Answer and Explanation

Question
Caustic soda is the common name for:
A. Sodium carbonate
B. Sodium bicarbonate
C. Potassium hydroxide
D. Sodium hydroxide
Answer: Option D
Solution (By JKExamLibrary)
Caustic soda is NaOH (sodium hydroxide). It is a strong base used in soap, paper, and textile industries. Washing soda is Na₂CO₃, baking soda NaHCO₃. Caustic potash is KOH.
This question belongs to: Science chemistry

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Practice More chemistry Questions

Question #1
The bond in HF is:
A. Non-polar covalent
B. Polar covalent
C. Coordinate
D. Ionic
Discuss

Correct Answer: Option B

Explanation:
HF has a polar covalent bond due to large electronegativity difference between H (2.1) and F (4.0), causing unequal sharing. It is not ionic because the difference is not extreme enough (>1.7 is typical but borderline). The bond is polar.
This question belongs to: Science chemistry
Question #2
Which scientist arranged elements in increasing order of atomic weights and grouped them by similar properties?
A. Henry Moseley
B. Dmitri Mendeleev
C. John Newlands
D. Antoine Lavoisier
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Correct Answer: Option B

Explanation:
Dmitri Mendeleev formulated the Periodic Law based on atomic masses and left gaps for undiscovered elements. Moseley later modified it to atomic number. Newlands gave Law of Octaves. Lavoisier classified elements into metals and non-metals.
This question belongs to: Science chemistry
Question #3
Rutherford used which particles in his gold foil experiment?
A. Alpha particles
B. Beta particles
C. Gamma rays
D. Neutrons
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Correct Answer: Option A

Explanation:
Rutherford bombarded a thin gold foil with alpha particles. Most passed through, but some were deflected, leading to the nuclear model.
This question belongs to: Science chemistry
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