CBSE Class X – Science Chemistry Exam (Full Syllabus)

0
0

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

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

2 / 25

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

3 / 25

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

4 / 25

Which of the following gases can be used for the storage of fresh sample of an oil for a long duration?

5 / 25

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

6 / 25

Which of the following is not a mineral acid?

7 / 25

Which of the following solutions in water does not conduct electricity?

8 / 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

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

The electronic confgurations of three elements X, Y and Z are: X : 2 Y : 2, 8, 7 Z : 2, 8, 2 Which of the following is true regarding these elements?

12 / 25

Arrange these elements in decreasing order of their atomic radii

13 / 25

The valency of an element vary across a period

14 / 25

The number of Periods in the Modern Periodic Table are

15 / 25

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

16 / 25

The electronic configuration of an element is found to be 2, 4. How many bonds can one carbon atom form in a compound?

17 / 25

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

18 / 25

The compounds have low melting and boiling points.

19 / 25

Molecular formula of Methane

20 / 25

The name of the fourth member of alkane series.

21 / 25

The poorest conductor of heat among metals is

22 / 25

2 ml each of conc. HCl, HNO3, and a mixture of conc. HCl and conc. HNO3 in the ratio of 3:1 were taken in test tubes labelled as : A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C. The metal could be:

  1. AI

  2. Au

  3. Cu

  4. Pt

23 / 25

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

24 / 25

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

25 / 25

Which metal is less reactive?

Your score is

0%

Leave a Reply 0

Your email address will not be published. Required fields are marked *