> > Aptitude MCQs > Chemistry Aptitude Test MCQs

Chemistry Aptitude Test MCQ

In 506.40, ____ significant figures are there.

Four

Three

Two

Five

Answer

Correct Answer: Five

Note: This Question is unanswered, help us to find answer for this one

700 tort is equal to?

700 atm

1 atm

760 atm

0.92 atm

Answer

Correct Answer: 0.92 atm

Note: This Question is unanswered, help us to find answer for this one

58.5 is ____ of NaCL.

Atomic weight

Formula weight

None

Molecular weight

Answer

Correct Answer: Formula weight

Note: This Question is unanswered, help us to find answer for this one

Relationship studied in stoichiometric calculations are?

All of these

Mass-volume

Mass-mass

Volume — volume

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

The % of nitrogen in NH3 is?

14/34 x 100

3/17 x 100

14 /17 x 100

3 /34 x 100

Answer

Correct Answer: 14 /17 x 100

Note: This Question is unanswered, help us to find answer for this one

A graph between pressure and inverse of volume and constant temperature and number of moles?

Straight line parallel to v-axis

Straight line passing through the origin

The curve showing the maximum.

Straight line parallel to x-axis

Answer

Correct Answer: Straight line passing through the origin

Note: This Question is unanswered, help us to find answer for this one

1 dm3 of 02 is equal to?

3.2gm

1.43gm

L6gm

32gm

Answer

Correct Answer: 1.43gm

Note: This Question is unanswered, help us to find answer for this one

Gas equation is the combination of?

Charle’s Law and Boyle’s Law

Avogadro’s Law, Charle’s Law & Boyle's law.

Avogadro’s Law and Charle’s Law

Boyle’s Law and Avogadro’s Law

Answer

Correct Answer: Avogadro’s Law, Charle’s Law & Boyle's law.

Note: This Question is unanswered, help us to find answer for this one

The ratio of hydrogen and Oxygen in water by mass is?

1:8

2:1

1:2

1:9

Answer

Correct Answer: 1:8

Note: This Question is unanswered, help us to find answer for this one

Nitrogen and Ethene (C2H4) have the same rates of diffusion at a fixed temperature because?

Both have multiple bonds in them

Their molecular masses are same

Both are electrically neutral molecules

Both are covalent compounds

Answer

Correct Answer: Their molecular masses are same

Note: This Question is unanswered, help us to find answer for this one

Volume occupied by one mole of a gas at S.T.P is called?

Decimolar Volume

Molar volume

Normal Volume

Standard Volume

Answer

Correct Answer: Molar volume

Note: This Question is unanswered, help us to find answer for this one

Isotopes are sister atoms of same elements with similar chemical properties but different?

Atomic structure

Atomic volume

Atomic number

Atomic mass

Answer

Correct Answer: Atomic mass

Note: This Question is unanswered, help us to find answer for this one

Compounds having some molecular and Empirical formulas?

Covalent compounds

Ionic compounds

None of these

Co-ordinate covalent compounds

Answer

Correct Answer: Ionic compounds

Note: This Question is unanswered, help us to find answer for this one

The ideal gas constant R, when expressed in dm3 — atm unit, be a value of?

0.0821

82.1

82.21

1.0821

Answer

Correct Answer: 0.0821

Note: This Question is unanswered, help us to find answer for this one

S.T.P correspond to?

760 Tort and 273°C

760 tort and 273K

1 atm and 273°C

760 tort and -273°C

Answer

Correct Answer: 760 Tort and 273°C

Note: This Question is unanswered, help us to find answer for this one

The gas law giving relationship between volume and pressure of gas?

Boyle’s Law

Graham’s law

Charle’s Law

Dalton’s Law

Answer

Correct Answer: Boyle’s Law

Note: This Question is unanswered, help us to find answer for this one

At constant temperature if the pressure is reduced to half, the volume of a gas will be?

Decreased four time

Reduced to half

Increased four times

Doubled

Answer

Correct Answer: Doubled

Note: This Question is unanswered, help us to find answer for this one

One mole of cl ions contains?

6.02 x 1023 atoms

6.02 x 1023 molecules

1.20 x 1024 ions

6.02 x 1023 ions

Answer

Correct Answer: 6.02 x 1023 ions

Note: This Question is unanswered, help us to find answer for this one

The mass of 22.4 dm3 of N2 is?

44 gm

2 gm

32 gm

28 gm

Answer

Correct Answer: 28 gm

Note: This Question is unanswered, help us to find answer for this one

A simple formula of a compound contains 8 1.8% carbon and 18.2% hydrogen is?

C2H6

CH4

CH3

Answer

Correct Answer: CH3

Note: This Question is unanswered, help us to find answer for this one