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

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

O₂

NH₃

NO

H₂O

2 / 25

The following reaction is an example of a: 4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)

Displacement reaction

Combination reaction

Redox reaction

Neutralisation reaction

1 and 4

2 and 3

1 and 3

3 and 4

3 / 25

Which of the following declaration is true for acids?

Bitter and change red litmus to blue

Sour and change red litmus to blue.

Sour and change blue litmus to red

Bitter and change blue litmus to red.

4 / 25

Which of the following statements is correct about an aqueous solution of an acid and a base?

The higher the pH, the stronger the acid

The higher the pH, the weaker the acid

The lower the pH, the stronger the base

The lower the pH, the weaker the base

2 and 4

1 and 3

2 and 3

1 and 4

5 / 25

Which among the following Declaration is incorrect for magnesium metal?

It burns in oxygen with a dazzling white fame

It reacts with cold water to form magnesium oxide and evolves hydrogen gas.

It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas.

It reacts with steam to form magnesium hydroxide and evolves hydrogen gas.

6 / 25

which metal is more reactive?

calcium

sodium

both 1 & 2

none of these

7 / 25

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

3-Butene

Prop-1-ene

But-1-ene

Butyne

8 / 25

The next homologue of C₂H₄

C₃H₆

C₄H₅

C₃H₅

C₃H₇

9 / 25

The next homologue of C₄H₆

C₅H₁₀

C₅H₈

C₅H₅

C₅H₆

10 / 25

As claimed by Mendeleev’s periodic law, the elements were arranged in the periodic table in the order of:

Increasing atomic number

Decreasing atomic number

Increasing atomic masses

Decreasing atomic masses

11 / 25

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

F < N < Be < Li.

F < N < Li < Be.

Li < F < Be < N.

12 / 25

Pseudopodia are:

Small hair-like structures present on unicellular organisms.

False feet developed in some unicellular organisms

Long, tube-like structures coming out of the mouth

Suckers which are attached to the walls of the intestines. glomerulus and tubular region (Renal tubule). Glucose, amino acids and salts are selectively reabsorbed in tabular region

13 / 25

Which one of the following diets would you recommended to the affected patient?

High sugar and low fat diet.

Low sugar and high protein diet.

High Carb and low fiber diet.

Low sugar and high fiber diet

14 / 25

Name the harmone secretes a sperms in human males.

Testosterone

Testes

Both 1 & 2

All Of These

15 / 25

What do you understand by Puberty?

The age at which the reproductive organs of boys and girls become non functional.

The age at which the reproductive organs of boys and girls become functional.

It is a process of fertilisation in boys and girls.

None of these

16 / 25

A surgical method of Blocking vas deferens to prevent pregnancy is done for

Females

Males

Both 1 & 2

None Of These

17 / 25

A woman has only daughters which

Indicates that in every fusion, the sperm carrying the Y chromosome fertilized the ovum.

Indicates that in every fusion, the sperm carrying the X and Y chromosome fertilized the ovum.

Indicates that in every fusion, the sperm carrying the X chromosome fertilized the ovum.

Both 1 & 3

18 / 25

The maleness of a child is determined by:

The X chromosome in the zygote

The Y chromosome in the zygote

The cytoplasm of the germ cell which determines the sex

Sex is determined by chance

19 / 25

The absorption of light by a molecule depends on the

wavelength and the size of the molecule

wavelength

size of molecules

none

20 / 25

A student traces the path of a ray of light through a triangular glass prism for diferent values of angle of incidence. On analysing the ray diagrams, which one of the following conclusions is he likely to draw?

The emergent ray is parallel to the incident ray

The emergent ray bends at an angle to the direction of the incident ray

The emergent ray and the refracted ray are at right angles to each other.

The emergent ray is perpendicula

21 / 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.

22 / 25

A fuse wire frequently gets burnt when used with a good heater. It is advised to use a fuse wire of

more length

less radius

less length

more radius

23 / 25

What is the maximum resistance which can be made using five resistors each of 1/5 W?

10 Ohm

1 Ohm

100 Ohm

1/5 Ohm

24 / 25

The law states that if the forefinger indicates the direction of the magnetic field and thumb shows the direction of motion of conductor, then the middle finger will show the direction of induced current

fleming left hand rule

Fleming right hand rule

ohms law

none

25 / 25

Two magnetic feld lines never intersect because the resultant force on a north pole at any point can only be in

uni direction

bidirection

multidirection

none

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

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