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UPSC CAPF AC Paper - I
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Calcium carbonate is naturally available as limestone and can also be synthesized from quick lime. It is seen that the compositions of the elements in both the natural and synthetic calcium carbonate are same. The validity of which one among the following laws is confirmed by this observation?

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Important Questions on Chemistry

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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 5
The purity of milk is determined by:
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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 6
Which one among the following statements regarding the properties of mixtures and compounds is not correct?
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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 7
When the milk is churned vigorously the cream from it is separated out due to _____
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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 8

Statement I: Physical change in matter bring change in its composition and nature.

Statement II: Physical change involves interconversion of states and colour.

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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 9
Chromatography is based on which of the following?
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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 10
The product of equivalent weight and valency of an element is equal to _____
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UPSC CAPF AC Paper - I
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Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 11
Iodine can be separated from a mixture of iodine and potassium chloride by:
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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 12

Statement I: All compounds contain more than one element.

Statement II: All compounds are heterogeneous mixtures.