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UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Match the following Columns.

Column I Column II
A. John Dalton 1. Law of conservation of mass
B. A Lavoisier 2. Law of reciprocal proportions
C. Richter 3. Law of gaseous volume
D. Gay Lussac 4. Law of multiple proportion

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Important Questions on Chemistry

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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 37

Consider the following statements:

I. Matter can neither be created nor be destroyed.

II. Total mass of reactants are always equal to the total mass of the products.

III. Atoms are the smallest unit of matter.

Which of the above statements are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 38
The three basic components of an atom are:
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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 39
Matter waves are:
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 40

Match the entries in Column (I) with the correctly related quantum numbers in Column (II).

Column I Column II
A. Clockwise or anti-clockwise spins of an electron on its axis. 1. Principal quantum number
B. It describes position and energy of the electron in an orbit. 2. Azimuthal quantum number
C. It describes subshell. 3. Magnetic quantum number
D. It describes preferred orientations of orbitals in space. 4. Electron spin quantum number

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EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 41
Which one among the following is not a correct statement?
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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 42
Which one of the following is the correct electronic configuration of chlorine?
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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 43
The bond which is present between water molecules is-
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UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 44
What happens when a chemical bond is formed?