Question # 1

Many elements have fractional atomic masses. This is because

Choose an answer

The mass of the atom is itself fractional

Atomic masses are average masses of isobars

Atomic masses are average masses of isotopes

Atomic masses are average masses of isotopes proportional to their relative abundance

Which one of the following relationship is correct about energy and frequency.

Choose an answer

E = hv

E = h/v

E = v/h

h = v/E

The enthalpy of combustion is

Choose an answer

Positive

Negative

Either positive or negative

No correlation

The temperature of natural plasma is about.

Choose an answer

200000 ^oC

10000^oC

5000^oC

1000^oC

Allotropy is the property of.

Choose an answer

Compound

Element

Atom

Mixtuer

Colligative properties are used to determine the

Choose an answer

Freezing points

Boiling point

Atomic mass of an element

Molar mass of solute

Solubility of which substance decreases by incressing temperature.

Choose an answer

NaNO3

KNO2

NaCl

Ce2(SO4)3

Depression of freezing point method is used for determination of molar masses of

Choose an answer

Electrolytes

Non-volatile solids

Volatile solids

Volatile liquids

The molecular shape of SO3 is.

Choose an answer

Triangular planar

Tetrahedral

Pyramidal

Linear

Which one of the following substances is not amorphous

Choose an answer

Polymer

Rubber

Glass

AgNO₃

The molecules of CO₂in dry ice form the

Choose an answer

Ionic crystal

Covalent crystals

Molecular crystals

Any type of crystals

The number of moles of CO₂which contain 8.0 g of oxygen

Choose an answer

0.25

0.50

1.0

1.50

The relative lowering of vapour pressure is equal to the mole fraction of the solute. This law is known as

Choose an answer

Ostwald dilution law

Raoult's law

Vant hoff's law

Henry's law

The rate of reaction

Choose an answer

Increase as the reaction proceeds

Decreases as the reaction proceeds

Remains the same as the reactions proceeds

May decrease or increase as the reaction proceeds

Which of the following molecule has zero dipole moment.

Choose an answer

NH3

CHCl3

H2O

BF3

Long chains of amino acids are coiled about one another into a spiral by

Choose an answer

Covalent bond

Ionic bond

Hydrogen bond

Van Der Waal's forces

Which particle has a mass 1/1836 time, that of hydrogen.

Choose an answer

Proton

Positron

Electron

Neutron

What has a mass equal to that of one mole of water.

Choose an answer

22.4 dm3 of water

One mole of steam

One molecule of water

Two moles of hydrogen molecules and one mole of oxygen molecules.

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