CBSE Class X – Science Chemistry Exam (Full Syllabus)

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CBSE Class X – Science Chemistry Exam (Full Syllabus)

This test is designed based on NCERT Syllabus for Class 10 Topics of Science – Chemistry

  • Each time random 25 questions will be displaced from the question bank of 500 + Questions
  • So we recommend you to retake the quiz till you have mastered all the questions

1 / 25

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

2 / 25

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

3 / 25

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

4 / 25

On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed. Identify the brown gas X evolved.

5 / 25

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during the electrolysis of water is:

6 / 25

Which of the following statements is accurate about an aqueous solution of an acid and a base?

  1. Higher the pH, stronger the acid

  2. Higher the pH, weaker the acid

  3. Higher the pH, stronger the base

  4. Lower the pH, weaker the base

7 / 25

Which of the following statements is correct about an aqueous solution of an acid and a base?

  1. The higher the pH, the stronger the acid

  2. The higher the pH, the weaker the acid

  3. The lower the pH, the stronger the base

  4. The lower the pH, the weaker the base

8 / 25

The source of lactic acid is

9 / 25

Common name calcium sulphate hemihydrate

10 / 25

Which of the following statements is true for acids?

11 / 25

Which among the following elements has the largest atomic radii?

12 / 25

Three elements B, Si and Ge are:

13 / 25

Arrange these elements in decreasing order of their atomic radii

14 / 25

Arrange these elements in increasing order of their atomic radii

15 / 25

Three elements B, Si and Ge are: Metalloids (d)

16 / 25

Which of he following compounds of carbon does not consist of ions?

17 / 25

How many number of carbon atoms are joined in a spherical molecule of buckminsterfullerene?

18 / 25

Which of the following substance produces brisk effervescence with baking soda solution?

19 / 25

The I.U.P.A.C name of CH3CH2CH=CH2 is?

20 / 25

The formula of cyclopentane

21 / 25

Which one of the following four metals would be replaced from the solution of its salts by the other three metals?

22 / 25

An element A is mushy and can be cut with a knife. This is very reactive to air and cannot be kept in open air. It reacts vigorously with water. Identify the element from the following:

23 / 25

In the given reaction, Al2O3 + NaOH → …X… + H2O. What is element X?

24 / 25

Give the formula of the stable binary compounds that would be formed by the combination of following pair of elements: K and O2

25 / 25

Which metal is less reactive?

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