CBSE Class X – Science Chemistry + Biology + Physics Exam (Full Syllabus)

This test is designed based on NCERT Syllabus for Class 10 Topics of Science – Chemistry , Biology and Physics

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

You are given the solution of lead nitrate. In order to obtain a yellow precipitate you should blend with it a solution of:

potassium nitride

potassium sulphide

potassium iodide

2 / 25

Which among the following is (are) double displacement reaction(s)?

Pb + CuCl₂ → PbCl₂ + Cu

Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl

C + O₂ → CO₂

CH₄ + 2O₂ → CO₂ + 2H₂O

1 and 4

2

1 and 2

3 and 4

3 / 25

Which of the following substances will not give carbon dioxide on treatment with dilute acid?

Marble

Limestone

Baking soda

Lime

4 / 25

The source of lactic acid is

curd

milk

butter

none

5 / 25

Which one of the following metals does not respond with cold as well as hot water?

Na

Ca

Mg

Fe

6 / 25

Which one of the following four metals would be replaced from the solution of its salts by the other three metals?

Mg

Ag

Zn

Cu

7 / 25

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

covalent compounds

ionic compounds

both 1 & 2

none

8 / 25

The compounds have low melting and boiling points.

covalent compounds

ionic compounds

molecular compounds

both 1 & 2

9 / 25

Molecular formula of Methane

CH₆

CH₄

CH₅

CH₃

10 / 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

11 / 25

Arrange the following elements in increasing order of their atomic radii:

l < Br < Cl < At

At < Br < I < Cl

Cl < I < Br < At

Cl < Br < I < At

12 / 25

Which is the true sequence of air passage during inhalation?

Nostrils → Larynx → Pharynx → Trachea → Lungs

Nasal passage → Trachea → Pharynx → Larynx → Alveoli

Larynx → Nostrils → Pharynx → Lungs

Nostrils → Pharynx → Larynx → Trachea → Alveoli

13 / 25

The red pigment which carries oxygen in the blood.

Haemoglobin

Platelets

Veins

Capillaries

14 / 25

Which among the following diseases is not sexually transmitted?

Syphillis

Hepatitis

HIV-AIDS

Gonorrhoea

15 / 25

Reproduction is essential for living organisms to order to:

Keep the individual organism alive

Fulfll their energy requirements

Maintain growth

Continue the species generation after generation

16 / 25

Name the harmone secretes a sperms in human males.

Testosterone

Testes

Both 1 & 2

All Of These

17 / 25

Name the plant Mendel used of F1 & F2 generation cross of tall and short plant experiment.

Garden pea

Tomato

Brinjal

All vegetables

18 / 25

The first person to give scientific explanation for the mechanism of transmission of characters from parents to the offsprings.

Charles Darwin

Mendel

Thomas Edison

none of these

19 / 25

Arpit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,What is the total time diference on duration of day on earth?

4 minutes

6minutes

8minutes

10minutes

20 / 25

Why don’t planets twinkle?

Intensity of light entering our eye is infinity

Intensity of light entering our eye is one.

Intensity of light entering our eye is zero.

Intensity of light entering our eye is two.

21 / 25

The defect in a person can see nearby objects but not far away objects

Far-sightedness

Myopia

Astigmatism

none

22 / 25

Insulators consists of:

No resistance

High resistance

Small resistance

Variable resistance

23 / 25

S.I unit of resistance

ohm

mho

ohm metre

none

24 / 25

A soft iron bar is introduced inside the current carrying solenoid. The magnetic field inside the solenoid:

will decrease

will remains same

will increase

will become zero

25 / 25

Example of permanent magnet is

solenoid wounded across a nail and connected to a battery

Bar Magnet

Both 1 & 2

none

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CBSE Class X – Science Chemistry + Biology + Physics Exam (Full Syllabus)

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