Question # 1

The number of moles of CO₂which contain 8.0 g of oxygen

Choose an answer

0.25

0.50

1.0

1.50

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

the number of moles of CO2 which contain 8.0 g of oxygen.

Choose an answer

0.25

0.50

1.0

1.50

One mole of SO2 contains

Choose an answer

6.02 x 10²³atoms of oxygen

18.1 x 10²³atoms of SO2

6.02 x 10²³atoms of Sulphur

4 g atoms of SO2

Which statement is incorrect about Dempster's mass spectrometer.

Choose an answer

Solid sample can be used in this mass spectrometer

Ions are detected on the basis of mass to charge ratio

Atoms or molecules are ionized with beam of electron.

This spectrometer work at one atmospheric pressure.

The largest number of molecules are present in

Choose an answer

3.6 of H2O

4.6 g of C2H5OH

2.8 g of CO

5.4 g of N2O5

Cadmium has isotopes.

Choose an answer

3

4

5

9

In stoichiometric calculations

Choose an answer

The reaction can be reversile

Side products can be formed

Law of conservation of mass may not be obeyed

Law of definite proportions is definitely obeyed

How many moles of CO are present having 12.04 x 10²³molecules of CO2.

Choose an answer

0.5 mol

1.0 mol

1,5 mol

2.0 mol

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 AgCI are produced by combination of 1.0 mole of AgNO₃and 2.0 mole of NaCI

Choose an answer

1.0

2.0

3.0

4.0

Calcium has isotopes

Choose an answer

7

9

1

6

The total number of protons and neutrons present in the nucleus of an atom is called.

Choose an answer

Mass number

Atomic number

Molecular mass

Relative atomic mass

During combustion analysis, CO2 produced is absorbed in

Choose an answer

Mg (CLO4)2

50% KOH

CaCl2

P2O5

Actual yield is mostly less than the theoretical yield due to the reason that

Choose an answer

Rates of reactions are slow

Loss of the product during handling

Reactions are never completed 100%

Law of conservation of mass is not true

the number of Al³⁺ ion sin AlCl₃is 2.007 x 10²³. The number of Cl- ions are.

Choose an answer

6.02 x 10²³

3.01 x 10²³

1.5 x 10²³

CO+ is an example of.

Choose an answer

Free radical

Cationic molecular ion

Anionic molecular ion

Stable molecule

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