2. 0.224 L of H2 gas at S.T.P is equivalent to

Correct Answer is: 6.02 Ã— 10 22 molecules

10. 5.0 litre of 0.4 M H2SO4 Contains

Correct Answer is: 2.0 moles H 2 O

14. A sample of phosphrous trichloride(PCl3) contains 1 .4 moles of the substance. how many atoms are there is the sample ?

Correct Answer is: 8.431Ã— 10 23

21. Number of atoms of oxygen present in 10.6g Na2Co3 will be

Correct Answer is: 31.80 Ã— 10 23

22. Number of electrons in 1.8 mL of H2O is

Correct Answer is: 60.22 x 10 23

Mole Concept MCQ Multiple Choice Questions Answers

Q: 1. Which one of the following statements is incorect ?

Correct Answer is: One mole of electrons stands for 6.02x10 23 electrons

Q: 7. 2.0 g of oxygen contains number of atoms same as in

Correct Answer is: 12.3 g of Na.

Q: 16. Atomic mass of an elements is

Correct Answer is: much different from the mass number of the element.

Q: 17. Avogadros number represents the number of atoms in

Correct Answer is: 12.7g of iodine

Master the Mole Concept with our multiple-choice questions (MCQs), designed to help students and exam aspirants strengthen their understanding and prepare effectively for various assessments.

About Mole Concept MCQ Questions

The Mole Concept is a fundamental principle in chemistry that deals with the relationship between the amount of substance, its mass, and the number of particles. Key concepts covered include Avogadro's number, molar mass, and stoichiometric calculations.

Why Practice Mole Concept Objective Questions?

Practicing Mole Concept MCQs offers several benefits. It helps students reinforce their understanding of chemical calculations, prepares them for school and college exams, and enhances their problem-solving skills. These questions are also useful for competitive exam aspirants and candidates preparing for interviews in chemistry-related fields.

Who Should Use These MCQs?

Mole Concept MCQ Questions for Practice

1. Which one of the following statements is incorect ?

One gram atom of carbon contains avogadros number of atoms
One mole of oxygen gas contains Avogadros number of atoms
One mole of hydrogen contains Avogadros number of atoms
One mole of electrons stands for 6.02x10²³ electrons

2. 0.224 L of H₂ gas at S.T.P is equivalent to

1 mol
1g
6.02 Ã— 10²² molecules
0.01 mol

3. 100 g caco₃ is treated with I litre of 1N HCl. What would be the weight of co₂ libereted after the completion of the reaction ?

5.5 g
11g
22g
33g

4. 11.2 litre of a gas at STP weighs 14 g. The gas could not be

N₂
CO
B₂H₆
N₂O

5. 11.2 Litres of a gas at STP weighs 14g. The gas could not be

N₂0
CO
B₂H₆
N₂

6. 2 moles of H atoms at NTP occupy a volume of

11.2 litres
44.8 litres
2 litres
22.4 litres

7. 2.0 g of oxygen contains number of atoms same as in

4g of s
7g of nitrogen
0.5 g of H₂
12.3 g of Na.

8. 22.4 litres of water vapour at NTP, when condensed to water, occupies an approximate volume of

18 litres
1 litre
1 mL
18 ml

9. 5 moles of a gas in closed vessel was heated from 300 K to 600 K. the pressure of gas doubled The number of moles of the gas will be

10. 5.0 litre of 0.4 M H₂SO₄ Contains

2.0 Mole Of H₂SO₄
0.4 mole H₂SO₄
5.0 mole H₂SO₄
2.0 moles H₂O

11. 5.6 litres of gas at N.T.P are found to have a mass of 11 g. The molecular mass of the gas is

12. 5.6 litres of oxygen at NTP is equivalent of

1 mole
1/2 mole
1/4 Mole
1/8 mole

13. 6.02×10²² molecules of N₂ at NTP will occupy a volume of

22.4 litres
2.24 litres
6.02 litres
6.02 mL

14. A sample of phosphrous trichloride(PCl₃) contains 1 .4 moles of the substance. how many atoms are there is the sample ?

5.6
4
8.431Ã— 10²³
3.372Ã— 10²⁴

15. A symbol not only represents the name of the element but also represents

its atomic no.
1 gm-atom
its atomicity
Reactivity.

16. Atomic mass of an elements is

the actual mass of one atom of the element
the relative mass of an atom of the element
the average relative mass of different atoms of the element
much different from the mass number of the element.

17. Avogadros number represents the number of atoms in

12g of C¹²
320g of sulphur
32g of oxygen
12.7g of iodine

18. How many grams are contained in 1 gram-atom of Na?

13g
23g
1 g
1/23g

19. I mole of a compuund contain 1 mole of C and 2 moles of O. The molecular weight of the compound is

20. Mass of a mole of electrons is

0.20mg
0.02mg
0.55mg
1.00mg

21. Number of atoms of oxygen present in 10.6g Na₂Co₃ will be

6.02 Ã— 10²²
12.04 Ã— 10²²
1.806 Ã— 10²³
31.80 Ã— 10²³

22. Number of electrons in 1.8 mL of H₂O is

6.02 x 10²³
3.011 x 10²³
0.6022 x 10²³
60.22 x 10²³

23. Number of water molecules in the drop of water,if 1 ml of water has 20 drops and A is Avogadros number, is

0.5A/18
0.05A (C)0.5A
0.05A/18

24. One mole of oxygen gas is the volume of

1 litre of oxygen at S.T.P.
32 litres of oxygen at S.T.P.
22.4 litres of oxygen at S.T.P.
6.02 Ã— 10²³ molecules of oxygen at any temperature and pressure.

25. The mass of carbon present in 0.5 mole of K₄ [Fe(CN)₆] is

1.8 g
18 g
3.6 g
36 g

26. The maximum no. of molecules is present in

15 L of H₂ gas at S.T.P
5 L of N₂ gas at S.T.P
0.5 g of H₂ gas
10 g of O₂ gas

27. The number of g-atom of oxygen in 6.02 × 10²⁴ CO molecules is

28. The number of moles of carbon dioxide which contain 8 g of oxygen is

0.5 mol
0.20 mol
0.40 mol
0.25 mol

29. The total no of ions present in 111 g of cacl₂ is

One mole
Two mole
Three mole
Four moles

30. The weight of 350 mL of diatomic gas at 0 degree Centigrate and 2 atm pressure is 1g. The wt. of one atom is

16/N
32/N
16 N
32 N (N is the Av. const.)

Mole Concept MCQ Multiple Choice Questions Answers | Quiz for Practice

About Mole Concept MCQ Questions

Why Practice Mole Concept Objective Questions?

Who Should Use These MCQs?

Mole Concept MCQ Questions for Practice

1. Which one of the following statements is incorect ?

2. 0.224 L of H₂ gas at S.T.P is equivalent to

3. 100 g caco₃ is treated with I litre of 1N HCl. What would be the weight of co₂ libereted after the completion of the reaction ?

4. 11.2 litre of a gas at STP weighs 14 g. The gas could not be

5. 11.2 Litres of a gas at STP weighs 14g. The gas could not be

6. 2 moles of H atoms at NTP occupy a volume of

7. 2.0 g of oxygen contains number of atoms same as in

8. 22.4 litres of water vapour at NTP, when condensed to water, occupies an approximate volume of

9. 5 moles of a gas in closed vessel was heated from 300 K to 600 K. the pressure of gas doubled The number of moles of the gas will be

10. 5.0 litre of 0.4 M H₂SO₄ Contains

11. 5.6 litres of gas at N.T.P are found to have a mass of 11 g. The molecular mass of the gas is

12. 5.6 litres of oxygen at NTP is equivalent of

13. 6.02×10²² molecules of N₂ at NTP will occupy a volume of

14. A sample of phosphrous trichloride(PCl₃) contains 1 .4 moles of the substance. how many atoms are there is the sample ?

15. A symbol not only represents the name of the element but also represents

16. Atomic mass of an elements is

17. Avogadros number represents the number of atoms in

18. How many grams are contained in 1 gram-atom of Na?

19. I mole of a compuund contain 1 mole of C and 2 moles of O. The molecular weight of the compound is

20. Mass of a mole of electrons is

21. Number of atoms of oxygen present in 10.6g Na₂Co₃ will be

22. Number of electrons in 1.8 mL of H₂O is

23. Number of water molecules in the drop of water,if 1 ml of water has 20 drops and A is Avogadros number, is

24. One mole of oxygen gas is the volume of

25. The mass of carbon present in 0.5 mole of K₄ [Fe(CN)₆] is

26. The maximum no. of molecules is present in

27. The number of g-atom of oxygen in 6.02 × 10²⁴ CO molecules is

28. The number of moles of carbon dioxide which contain 8 g of oxygen is

29. The total no of ions present in 111 g of cacl₂ is

30. The weight of 350 mL of diatomic gas at 0 degree Centigrate and 2 atm pressure is 1g. The wt. of one atom is

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Mole Concept MCQ Multiple Choice Questions Answers | Quiz for Practice

About Mole Concept MCQ Questions

Why Practice Mole Concept Objective Questions?

Who Should Use These MCQs?

Mole Concept MCQ Questions for Practice

1. Which one of the following statements is incorect ?

2. 0.224 L of H2 gas at S.T.P is equivalent to

3. 100 g caco3 is treated with I litre of 1N HCl. What would be the weight of co2 libereted after the completion of the reaction ?

4. 11.2 litre of a gas at STP weighs 14 g. The gas could not be

5. 11.2 Litres of a gas at STP weighs 14g. The gas could not be

6. 2 moles of H atoms at NTP occupy a volume of

7. 2.0 g of oxygen contains number of atoms same as in

8. 22.4 litres of water vapour at NTP, when condensed to water, occupies an approximate volume of

9. 5 moles of a gas in closed vessel was heated from 300 K to 600 K. the pressure of gas doubled The number of moles of the gas will be

10. 5.0 litre of 0.4 M H2SO4 Contains

11. 5.6 litres of gas at N.T.P are found to have a mass of 11 g. The molecular mass of the gas is

12. 5.6 litres of oxygen at NTP is equivalent of

13. 6.02×1022 molecules of N2 at NTP will occupy a volume of

14. A sample of phosphrous trichloride(PCl3) contains 1 .4 moles of the substance. how many atoms are there is the sample ?

15. A symbol not only represents the name of the element but also represents

16. Atomic mass of an elements is

17. Avogadros number represents the number of atoms in

18. How many grams are contained in 1 gram-atom of Na?

19. I mole of a compuund contain 1 mole of C and 2 moles of O. The molecular weight of the compound is

20. Mass of a mole of electrons is

21. Number of atoms of oxygen present in 10.6g Na2Co3 will be

22. Number of electrons in 1.8 mL of H2O is

23. Number of water molecules in the drop of water,if 1 ml of water has 20 drops and A is Avogadros number, is

24. One mole of oxygen gas is the volume of

25. The mass of carbon present in 0.5 mole of K4 [Fe(CN)6] is

26. The maximum no. of molecules is present in

27. The number of g-atom of oxygen in 6.02 × 1024 CO molecules is

28. The number of moles of carbon dioxide which contain 8 g of oxygen is

29. The total no of ions present in 111 g of cacl2 is

30. The weight of 350 mL of diatomic gas at 0 degree Centigrate and 2 atm pressure is 1g. The wt. of one atom is

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2. 0.224 L of H₂ gas at S.T.P is equivalent to

3. 100 g caco₃ is treated with I litre of 1N HCl. What would be the weight of co₂ libereted after the completion of the reaction ?

10. 5.0 litre of 0.4 M H₂SO₄ Contains

13. 6.02×10²² molecules of N₂ at NTP will occupy a volume of

14. A sample of phosphrous trichloride(PCl₃) contains 1 .4 moles of the substance. how many atoms are there is the sample ?

21. Number of atoms of oxygen present in 10.6g Na₂Co₃ will be

22. Number of electrons in 1.8 mL of H₂O is

25. The mass of carbon present in 0.5 mole of K₄ [Fe(CN)₆] is

27. The number of g-atom of oxygen in 6.02 × 10²⁴ CO molecules is

29. The total no of ions present in 111 g of cacl₂ is