Chemistry Class 11 Question Answer & Video

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Mass and Stoichiometry

Some Basic Concepts Of Chemistry Q – 1.30, Class 11th CBSE Chemistry

Video For All Chapters Chemistry Class 11

Some Basic Concepts Of Chemistry Q – 1.31, Online NCERT Chemistry Videos Class 11th

Some Basic Concepts Of Chemistry Q – 1.32, Chemistry CBSE Class 11th NCERT

Some Basic Concepts Of Chemistry Q – 1.33, Class 11th Chemistry

Some Basic Concepts Of Chemistry Q – 1.34, Class 11th NCERT Chemistry

Some Basic Concepts Of Chemistry Q – 1.35, Chemistry Class 11th

Some Basic Concepts Of Chemistry Q – 1.36, CBSE Class 11th


1. There will be total 20  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. For the reaction 2NaN3(s) → 2Na(s) + 3N2 (g), how many moles of sodium azide (NaN3) must react in order to produce 8.75 moles of nitrogen gas?

Question 1 of 20

2. Formula mass is used for which of the following substances?

Question 2 of 20

3. Amount of water produced by the combustion of 16g of methane is:

Question 3 of 20

4. Branch of chemistry in which quantities of reactants and products of a chemical reaction are determined is known as:

Question 4 of 20

5. The mass of 1 Χ 1022 molecules of CuSO4.5H2O is:

Question 5 of 20

6. Which of the following is an element?

Question 6 of 20

7. The mass of one mole of NaOH will be( At. mass of Na =23, O = 16, H =1)

Question 7 of 20

8. Substances whose two or more components completely mix with each other to make a uniform composition are called:

Question 8 of 20

9. If 2 moles of H2 and O2 are available for the reaction, identify the limiting reagent for the reaction,
2H2 + O2 → 2H2O

Question 9 of 20

10. Which of the following has more number of atoms?

Question 10 of 20

11. Molecular mass of glucose molecule (C6H12O6) is:

Question 11 of 20

12. If 0.5 mole of BaCl2 is mixed with 0.2 mole of Na3PO4 ,then maximum number of moles of Ba3(PO4)2 that can be formed

Question 12 of 20

13. The atomic mass of an element is usually fractional because:

Question 13 of 20

14. Which of the following is a compound?

Question 14 of 20

15. If you have 2 moles of A and 3 moles of B, Identify the limiting reagent in the following reaction.

A + B → AB

Question 15 of 20

16. According to the chemical equation,

Mg(s) + 2HCl → MgCl2(aq) + H2(g)

How many moles of magnesium are needed to produce 12.34 moles of hydrogen gas?

Question 16 of 20

17. Two different atoms A and B combine together to form AB. What will be AB?

Question 17 of 20

18. Arsenic is a/an:

Question 18 of 20

19. If 0.5 mole of BaCl2 is mixed with 0.2 mole of Na3PO4, then the maximum number of moles of Ba3(PO4)2 that can be formed will be:

Question 19 of 20

20. 20 L of H2 gas at S.T.P weigh about:

Question 20 of 20

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