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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

Why are oil and fat containing food items fushed with nitrogen while packing?

2 / 25

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

3 / 25

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

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

One of the following does not happen during a chemical reaction.

6 / 25

Which of the following gives the exact increasing order of acid strength?

7 / 25

The chemical formula for plaster of Paris is :

8 / 25

Antacid are

9 / 25

The source of citric acid is

10 / 25

The chemical used in manufacture of soaps

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

Which of the following elements does not lose an electron with ease?

13 / 25

Which is not true about the noble gases?

14 / 25

The valency of an element vary across a period

15 / 25

How many metals are present in second period of periodic table?

16 / 25

Which of the followings is the major constituent of the liquefied petroleum gas?

17 / 25

Ethene is

18 / 25

Saturated hydrocarbons contains

19 / 25

The molecular formula of the fourth member of alkane series.

20 / 25

Chemical name of the compound CH3—CH2—CH2—Br

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

The poorest conductor of heat among metals is

23 / 25

When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding potassium metal to water catches fire.

24 / 25

The Most malleable and ductile metal

25 / 25

Which metal is less reactive?

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