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CBSE
Class 9
Science
Exploration
Atomic Foundations of Matter
Question Bank

What does the Law of Constant ...

Single Answer MCQ
Q-00172132

What does the Law of Constant Proportions state?

1

Elements in a compound always combine in fixed ratios by mass

2

All elements react in any proportion

3

Mixtures have variable compositions

4

Only metals combine in definite proportions

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Q1.

Which of the following is an example of the Law of Constant Proportions?

Single Answer MCQ
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Q2.

What does the Law of Conservation of Mass state?

Single Answer MCQ
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Q3.

What is the mass ratio of hydrogen to oxygen in water according to the Law of Constant Proportions?

Single Answer MCQ
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Q4.

During a chemical reaction, which of the following remains constant according to the Law of Conservation of Mass?

Single Answer MCQ
View explanation