Chemistry Practice Questions Set 15

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Match List-l with List-ll and select the correct answer using the code given below the Lists :
List-l
(Exponent)
A. John Dalton
B. Joseph Proust
C. Antoine Lavoisier
D. Joseph Louis Gay-Lussac
List-ll
(law)
1. Law of definite proportion by volume
2. Law of multiple proportions
3. Law of definite proportion by weight
4. Law of conservation of mass
*

1 point

A 2, B 3, C 4, D 1

A 2, B 4, C 3, D 1

A 1, B 4, C 3, D 2

A 1, B 3, C 4, D 2

Which of the following is not a gaseous air pollutant?
*

1 point

Oxides of sulfur

Oxides of nitrogen

Hydrocarbon

Smoke

Which one of the following fuels are used in gas welding?
*

1 point

LPG

Ethylene

Methane

Acetylene

Which one of the following statements is not correct?
*

1 point

Water starts boiling when its vapor pressure becomes equal to atmospheric pressure.

Water is known as the universal solvent.

The permanent hardness of water is due to the presence of MgCl₂, CaCl₂, MgSO₄, and CaSO₄.

The density of ice is greater than that of water.

Electricity is produced through the dry cells from ___ *

1 point

chemical energy

thermal energy

mechanical energy

nuclear energy

Red phosphorus is used in the manufacture of safety matches. This is due to the fact that
*

1 point

it shows phosphorescence

at ordinary temperatures, it is less reactive than other varieties of phosphorus

it cannot be converted to white phosphorus on heating

it does not react with halogen on heating

Which one of the following metals is prominently used in mobile phone batteries?
*

1 point

Copper

Zinc

Nickel

Lithium

Which one among the following is a micronutrient present in the soil for various crops?
*

1 point

Calcium

Manganese

Magnesium

Potassium

Match List l with List ll and select the correct answer using the code given below the Lists :
List l
(Air Pollutant)
A. Chlorofluorocarbon
B. Sulphur dioxide
C. Lead compound
D. Carbon dioxide
List ll
(Effect)
1. Acid rain
2. Depletion in the ozone layer in the atmosphere
3. Harmful to the human nervous system
4. Topmost contribution to the greenhouse effect
*

1 point

A 4, B 3, C 1, D 2

A 4, B 1, C 3, D 2

A 2, B 1, C 3, D 4

A 2, B 3, C 1, D 4

Which one among the following processes is not part of a chemical weathering?
*

1 point

Hydration

Exfoliation

Oxidation

Solution

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