Question # 1

Stoichiometric calculations cannot applied to reversible reactions because.

Choose an answer

Product again changes to reactant

Less product is formed

Reaction goes only in one direction

Products do not disappear.

How many moles of water results by burning 4 mole of H2 with excess of oxygen.

Choose an answer

1 mol

2 mol

3 mol

4 mol

the volume occupied by 1.4 of N2 at S.T.P is

Choose an answer

2.24 dm3

22.4 dm3

1.12 dm3

112 cm3

The volume occupied by 1.4 g of N2 at S.T.P is

Choose an answer

2.24 dm3

22.4 dm3

1.12 dm3

112 cm3

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.

Haemoglobin is a Macro molecule and consists of approximately atoms.

Choose an answer

5000

10,000

68000

15000

One mole of ethanol and one mole of ethane have an equal

Choose an answer

Masses

Number of atoms

Number of electrons

Number of molecules

Which is not a molecular ion.

Choose an answer

He+

CH3+

NH3-

CO+

The number of moles of CO₂which contain 8.0 g of oxygen

Choose an answer

0.25

0.50

1.0

1.50

The mass fo 1.505 x 10²³atoms of sulphur is.

Choose an answer

0.5 g

0.6 g

0.7 g

0.8 g

Isotopes are the atoms of same element with similar chemical properties but different

Choose an answer

Atomic number

Atomic volume

Atomic weight

Atomic structure

If four moles of sulphur dioxide are oxidized to sulphur trioxide, how many moles of oxygen are needed.

Choose an answer

0.5

1.0

1.5

2.0

Which statement about a molecule is incorrect.

Choose an answer

It exist independently

Molecules of a substances are similar

Hemoglobin is a homoatomic molecules

Oxygen molecule is a macromolecule

Cadmium has isotopes.

Choose an answer

3

4

5

9

How many molecules of CO2 are formed by burning 12 g carbon with excess of oxygen.

Choose an answer

3.01 x 10²³

1 x 10²³

6.02 x 10²³

1.03x 10²³

What is the mass of aluminium is 204 g of the aluminum oxide Al2O3.

Choose an answer

26 g

27 g

54 g

108 g

I molar volume of a gas at S.T.P is occupied by

Choose an answer

1 g of gas

6 x 10²³g of gas

22.4 m³of gas

1 gram molecular mass of gas

The element nickel has isotopes.

Choose an answer

3

2

5

7

More Classes

Other Links

Chemistry Fsc Part 1 Chapter 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