Laws of Chemical Combination NEET Questions

Physical Chemistry - Some Basic Concepts of Chemistry

Laws of Chemical Combination MCQ Questions


7.
The Law of Conservation of Mass does NOT hold true for:
A.
Nuclear reactions
B.
Decomposition reactions
C.
Combustion reactions
D.
Acid-base reactions
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ANSWER :
A. Nuclear reactions
8.
Which scientist's experiments on combustion most directly led to the formulation of the Law of Conservation of Mass?
A.
Joseph Proust
B.
John Dalton
C.
Antoine Lavoisier
D.
Robert Boyle
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ANSWER :
C. Antoine Lavoisier
9.
The Law of Definite Proportions was proposed by:
A.
John Dalton
B.
Joseph Proust
C.
Amedeo Avogadro
D.
Antoine Lavoisier
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ANSWER :
B. Joseph Proust
10.
The Law of Definite Proportions states that:
A.
Elements combine in simple whole-number ratios
B.
Equal volumes of gases contain equal numbers of molecules
C.
Mass is conserved in chemical reactions
D.
A given compound always contains the same elements in fixed proportions by mass
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ANSWER :
D. A given compound always contains the same elements in fixed proportions by mass
11.
Joseph Proust verified the Law of Definite Proportions using which compound?
A.
Hydrogen peroxide
B.
Cupric carbonate
C.
Calcium carbonate
D.
Sodium chloride
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ANSWER :
B. Cupric carbonate
12.
The Law of Definite Proportions is sometimes also called the:
A.
Law of Constant Proportions
B.
Both A and B
C.
Law of Multiple Proportions
D.
Law of Definite Composition
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ANSWER :
B. Both A and B