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

What happens when sodium sulphate solution is added to barium chloride solution?

2 / 25

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

3 / 25

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.

4 / 25

Mention whether it is physical or chemical changes : Heating of an iron rod to red hot

5 / 25

Solid calcium oxide reacts vigorously with water to form calcium hydroxide, accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form a solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?

  1. It is an endothermic reaction

  2. It is an exothermic reaction.

  3. The pH of the resulting solution will be more than seven.

  4. The pH of the resulting solution will be less than seven

6 / 25

What will take place when the solution of an acid is blend with the solution of a base in a test tube?

  1. The temperature of the solution increases

  2. The temperature of the solution decreases

  3. The temperature of the solution remains the same

  4. Salt formation takes place

7 / 25

What types of ions are formed when a base is dissolved in water ?

8 / 25

The pH of pure water is

9 / 25

How many water molecules are present in plaster of paris

10 / 25

Which of the following statements is true for acids?

11 / 25

Which of the subsequent set of elements is written in sequence of their increasing metallic character?

12 / 25

Modern Periodic Law States that

13 / 25

The formulae of chlorides of Eka-aluminium, the elements predicted by Mendeleev.

14 / 25

The atomic number of an element is 20, its valency is

15 / 25

Is calcium?

16 / 25

Ester is formed by the reaction between:

17 / 25

Which of the following statements about graphite and diamond is true?

18 / 25

Which of the following is the molecular formula of cyclobutane?

19 / 25

Saturated hydrocarbons contains

20 / 25

The molecular formula of Ethanol

21 / 25

Electrical wires have a coating of an insulating material. The material, overall adopted is:

22 / 25

Although metals form basic oxides, which of the subsequent metals form an amphoteric oxide?

23 / 25

The poorest conductor of heat among metals is

24 / 25

Why do ionic compounds conduct electricity in molten state? Because

25 / 25

which metal is more reactive?

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