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

Give an example of decomposition reaction taking place in our body.

reproduction

digestion

blood circulation

respiration

2 / 25

What type of reaction is represented by: A + BC → AC + B ?

oxidation reaction

replacement reaction

displacement reaction

none of these

3 / 25

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

chemical

physical

Both 1 & 2

none of these

4 / 25

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

endothermic reaction

exothermic reaction

Both 1 & 2

none of these

5 / 25

One of the following processess doesnot require a chemical reaction:

Melting of candle wax when heated

Burning of candle wax when heated

Digestion of food in your stomach

Ripening of banana

6 / 25

A visually challenged student, has to carryout a lab test to detect the presence of acid in a given solution. The acid-base indicator favoured by him will be:

Blue litmus

Clove oil

Red cabbage extract

Hibiscus extract

7 / 25

The chemical formula for plaster of Paris is :

CaSO₄.2H₂O

CaSO₄.H₂O

CaSO₄. 1/2H₂O

2CaSO₄.H₂O

8 / 25

Common salt other than being used in kitchen can also be used as the raw material for making:

Washing soda

Bleaching powder

Baking soda

Slaked lime

1 and 3

1 and 2

1, 2 and 3

1, 3 and 4

9 / 25

Name the acid along present in ant sting

methanoic acid

sulphuric acid

Hydrochloric acid

none

10 / 25

How many water molecules are present in plaster of paris

one third

half

4

2

11 / 25

Where would you establish the element with electronic confguration 2, ǫ in the modern periodic table?

Group 8

Group 2

Group 18

Group 10

12 / 25

Arrange these elements in decreasing order of their atomic radii

Carbon Nitrogen Oxygen Fluorine

Fluroine oxygen carbon Nitrogen

Nitrogen Oxygen Carbon Fluroine

Oxygen Nitrogen Fluroine Carbon

13 / 25

Why does atomic radius decreases as we move from left to right in a period

due to increase in nuclear charge which tends to pull the electrons closer to the nucleus.

due to decrease in nuclear charge which tends to pull the electrons closer to the nucleus.

due to no change in nuclear charge which tends to pull the electrons closer to the nucleus.

none of these

14 / 25

The metallic character vary across the period

It moves right to left in peroidic table

It moves left to right in peroidic table

Remains constant

none of these

15 / 25

Is calcium?

metal

non metal

both

none of these

16 / 25

What is denatured alcohol?

Ethyl alcohol which has been made unfit for drinking purpose by adding small amount of poisonous substance

Methyl alcohol which has been made unfit for drinking purpose by adding small amount of poisonous substance

Alcohol having properties of an acid

Ethyl alcohol containing 60% of water by weight

17 / 25

The property of self-linkage among identical atoms to form long chain compounds is known as:

Catenation

Isomerisation

Superposition

Halogenation

18 / 25

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

3-Butene

Prop-1-ene

But-1-ene

Butyne

19 / 25

Ethene is

saturated hydrocarbon

unsaturated hydrocarbon

both 1 & 2

none

20 / 25

The strong electrostatic interactions between ions formed by the transfer of electrons

covalent compounds

ionic compounds

both 1 & 2

none

21 / 25

Which of the subsequent oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

FeO

Fe₂O₃

Fe₃O₄

Fe₂O₃ and Ce₃O₄

22 / 25

Shwetha took three beakers A, B and C containing zinc sulphate, silver sulphate and iron (II) sulphate solutions respectively. Copper pieces were added to each beaker. The solution will Become visible blue in the case of:

Beaker A

Beaker B

Beaker C

Beaker B and C

23 / 25

Which of the following Metal have very low melting points?

Gallium

titanium

uranium

copper

24 / 25

A non-metal X exists in two diferent forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.

X is diamond; Y is graphite ; Z is carbon

X is carbon; Y is diamond ; Z is graphite

X is diamond; Y is carbon ; Z is graphite

none of these

25 / 25

When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (molecular mass = 40) and liberates a gas Z which easily catches fre. Identify X, Y and Z.

X = Sodium Hydroxide (NaOH) Y = Sodium(Na) Z = Hydrogen gas (H2)

X = Sodium (Na) Y = Sodium hydroxide (NaOH) Z = Hydrogen gas (H2

X = Hydrogen gas Y = Sodium hydroxide (NaOH) Z = Sodium( Na)

none of these

Your score is

0%

CBSE Class X – Science Chemistry Exam (Full Syllabus)

Archives

Categories