Science : Ch 01 – Chemical Reactions and Equations

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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: 2H2 + O2 → 2H2O

3 / 15

Mention whether it is a physical or chemical changes: -Evaporation of petrol

4 / 15

Mention whether it is physical or chemical changes :Curdling of milk

5 / 15

State the reactions exothermic or endothermic in nature: Dilution of sulphuric acid

6 / 15

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

7 / 15

State the reactions are exothermic or endothermic in nature: Dissolution of ammonium chloride in water

8 / 15

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

9 / 15

Which of the following reactions is an endothermic reaction?

10 / 15

When copper turning are added to silver nitrate solution, a blue coloured solution is formed after some time. It is because copper ?

11 / 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?

12 / 15

One of the following processess doesnot require a chemical reaction:

13 / 15

Which of the subsequent does show an oxidation reaction

14 / 15

Calcium oxide reacts vigorously with water to produce slaked lime. CaO(s) + H2O(l) → Ca(OH)2(aq) This reaction can be classified as:

  1. Combination reaction

  2. Exothermic reaction

  3. Endothermic reaction

  4. Oxidation reaction

15 / 15

The following reaction is an example of a: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)

  1. Displacement reaction

  2. Combination reaction

  3. Redox reaction

  4. Neutralisation reaction

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