Notes

  • This quiz contains 10 question from Chapter 1 – Chemical Reactions and Equations
  • Each question carry one mark
  • You can practice the quiz till the time you are prefect.
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Science : Ch 01 - Chemical Reactions and Equations

This test is designed based on NCERT Syllabus for Class 10 Topics : Chemical Reactions and Equations

  • Each time random 15 questions will be displaced
  • So retake the quiz till you have mastered all the questions

1 / 15

Identify the reducing agent in the following reactions: 2H2O + 2F2 → 4HF + O2

2 / 15

Identify the reducing agent in the following reactions: Fe2O3 + 3CO → 2Fe + 3CO2

3 / 15

Identify the reducing agent in the following reactions: 2H2 + O2 → 2H2O

4 / 15

When hydrogen sulphide gas is passed through a blue solution of copper sulphate, the colour of the solution fades and a black precipitate is obtained.Name the type of reaction taking place.

5 / 15

Mention whether it is physical or chemical changes:- Burning of Liquefied Petroleum Gas (LPG)

6 / 15

Sate the reactions exothermic or endothermic in nature: Dissolution of sodium hydroxide in water

7 / 15

In the electrolysis of water, name the gases liberated at cathode

8 / 15

In the electrolysis of water, name the gases liberated at anode

9 / 15

Which of the subsequent is (are) an endothermic process(es)?

  1. Dilution of sulphuric acid
  2. Sublimation of dry ice
  3. Condensation of water vapours
  4. Evaporation of water

10 / 15

Which of the following is not a physical change?

11 / 15

Which of the following gases can be used for the storage of fresh sample of an oil for a long duration?

12 / 15

Which of the following reactions is an endothermic reaction?

13 / 15

When hydrogen sulphide gas is passed through a blue solution of copper sulphate a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remain in the solution. The reaction is an example of a:

14 / 15

The following reaction is used for the preparation of oxygen gas in the laboratory: 2KClO3(s) Heat ⎯ → Catalyst ⎯⎯⎯ 2KCl(s) + 3O2(g) Which of the following statement(s) is/are correct about the reaction?

15 / 15

which of the subsequent chemical equations do the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

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