Question # 1

Rate of diffusion of CO and N₂are same at room temperature due to the reason, that

Choose an answer

Both are diatomic molecules

Both have same multiple bond in them

Both have lone pairs in them

Both have same molar masses

The cell in which a non spontaneous redox reaction takes place as a result of electricity is known as.

Choose an answer

Voltaic cell

Denial cell

dry Cell

Electrolytic cell

The pH of 10-3 mole dm-3 of an aqueous solution of H2SO4 is.

Choose an answer

3.0

2.7

2.0

1.5

A glass is full of water and contains 6.02 x 10²³molecules of H2O The mass of water molecules is.

Choose an answer

18 gm

90 g

120 g

180 g

When liquid water changes to ice its volume expands. The expansion in volume is.

Choose an answer

5%

9%

10%

18%

Many element have fractional atomic masses. This is because.

Choose an answer

the mass of the atom is itself fractional

Atomic masses are average mases of Isobars

Atomic masses are average masses Isotopes

Atomic masses are average masses of Isotopes proportional to their relative abundance.

Heat of solution of an ionic compound is equal to.

Choose an answer

Hydration energy

Lattice energy

Slum of both 'a' and 'b'

Difference of both a and b

Mass of 22.4 dm3 of N2 at STP is.

Choose an answer

28 gm

14 gm

1.4 gm

2,8 gm

The wave number of the light emitted by a certain source is 2 x 10⁶m. the wavelength of this light is

Choose an answer

500 nm

500 m

200 nm

5 x 10⁷m

The drying agents used in desiccator is.

Choose an answer

BeCl2

MgCl2

CaCl2

SrCl2

Polymorphic substances have

Choose an answer

Same physical and chemical properties

Different physical and chemical properties.

Same physical but different chemical properties

Different physical and same chemical properties.

When a chemical reaction is completed the

Choose an answer

Instantaneous rate > average rate

Instantaneous rate = average rate

Instantaneous rate is zero

Both average and instantaneous rates become zero

Which one of the following substances is not sublime material.

Choose an answer

Iodine

Benzoic acid

Ammonium chloride

Potash alum

12.04 x 10²³atoms of nitrogen gas is equal to.

Choose an answer

1 mol

2 mol

3 mol

4 mol

Chromatography in which the stationary phase is a solid is classified as.

Choose an answer

Partition chromatography

Gas chromatography

Adsorption Chromatography

Thin layer chromatography

Borax has the chemical formula.

Choose an answer

KNO3

Na2B3O7.10H2O

Na2CO3

NaNO3

The mass of two moles of electrons is

Choose an answer

1.10 mg

1.008 mg

0.184 mg

1.673 mg

If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air

Choose an answer

Remains constant

Increase

Decrease

Increase a bit

More Classes

Other Links

Chemistry Fsc Part 1 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer