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

Which reaction takes place when layer of silver deposit on copper wire when dipped in silver nitrate solution?

2 / 25

Identify the reducing agent in the following reactions 4NH3 + 5O2 → 4NO + 6H2O

3 / 25

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

4 / 25

State the reactions are exothermic or endothermic in nature: Decomposition of ferrous sulphate

5 / 25

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

6 / 25

Calcium phosphate is present in tooth enamel. Its nature is:

7 / 25

Which of the following is not a mineral acid?

8 / 25

If 10 mL of H2SO4 is mixed with 10 mL of Mg(OH)2 of the same concentration, the resultant solution will give the following colour with universal indicator:

9 / 25

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following declaration are true about the gas evolved?

  1. It turns lime water milky

  2. It extinguishes a burning splinter.

  3. It dissolves in a solution of sodium hydroxide.

  4. It has a pungent odour

10 / 25

What types of ions are formed when an acid is dissolved in water ?

11 / 25

Which of the following affirmation about the modern periodic table are inappropriate?

  1. The elements in the modern periodic table are arranged on the basis of their decreasing atomic numbers

  2. The elements in the modern periodic table are arranged on the basis of their increasing atomic masses.

  3. Isotopes are placed in adjoining group(s) in the periodic table.

  4. The elements in the modern periodic table are arranged on the basis of their increasing atomic number

12 / 25

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the identical group?

13 / 25

Arrange these elements in decreasing order of their atomic radii

14 / 25

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

15 / 25

The number of Periods in the Modern Periodic Table are

16 / 25

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

17 / 25

From which of the following substance pencil lead is formed?

18 / 25

The compounds formed by the sharing of electron pairs between two atoms.

19 / 25

The molecular formula of the fourth member of alkane series.

20 / 25

The next homologue of C4H6

21 / 25

Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?

22 / 25

Metal that is best conductor of electricity

23 / 25

Name one metal that exist in liquid state at room temperature.

24 / 25

Name a metal which is highly malleable

25 / 25

Which metal is less reactive?

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