1099+ Important Chemistry MCQ Questions Answers

Q:

Which of the following classifications is based on atomic numbers?

A) Mendeleev's Periodic Table	B) Modern Periodic Table
C) Newlands Law of Octaves	D) Dobereiner's Law of Triads

Answer & Explanation Answer: B) Modern Periodic Table

Explanation:

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Q:

___ is used in yellow lamp street lights.

A) Neon	B) Nitrogen
C) Phosphorous	D) Sodium

Answer & Explanation Answer: D) Sodium

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Q:

The number of electrons that can be accommodated in the M shell is

A) 18	B) 8
C) 2	D) 32

Answer & Explanation Answer: A) 18

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Chemistry Questions