NSO Books For Class 10th

Question 1
1 / -0

Find the missing term in the following series.

10, 37, 101, 226, ?

A
432

B
442

C
369

D
378

Question 2
1 / -0

In a certain code language, EMPTY is coded as FOSXD. How will STRING be coded in that language?

A
TVUSMS

B
TUVMSM

C
TVUMSM

D
TUVMMS

Question 3
1 / -0

Complete the following analogy.

EFRT : GJXB : : DNSL : ?

A
FRYT

B
GRYT

C
FSYT

D
FRZT

Question 4
1 / -0

Which of the following atoms contains only one proton and one neutron in the nucleus?

A
Tritium

B
Protium

C
Deuterium

D
Helium

Question 5
1 / -0

For general consideration:

In an acidic solution: [H3O+] > [OH-] and the pH < 7.
In a basic medium: [H3O+] < [OH-] and pH > 7.

Which of the following statements about pH and H+ ion concentration is incorrect?

A
Addition of one drop of concentrated HCl in NH₄OH solution decreases pH of the solution.

B
A solution of a mixture of one equivalent of each of CH₃COOH and NaOH has a pH of 7.

C
pH of pure neutral water at 25^oC is 7.

D
A cold and concentrated H₂SO₄ has lower H⁺ ion concentration than a dilute solution of H₂SO₄.

Question 6
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The bases which dissociate in their aqueous solution to produce one hydroxyl ion per molecule of the base are referred to as

A
triacidic

B
diacidic

C
monoacidic

D
None of these

Question 7
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Which of the following methods can be used to separate NH₄Cl from NaCl?

A
Heating the solid mixture in a test tube

B
Dissolving the mixture in CS₂

C
Moving a magnet through the mixture

D
Passing the mixture through a sieve

Question 8
1 / -0

Which of the following is a non-commercial conventional source of energy?

A
Coal

B
Petroleum

C
Firewood

D
Electricity

Question 9
1 / -0

Which of the following chemical equations represents precipitation reaction?

A
HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (g)

B
2KI + PbSO₄→PbI₂+ K₂SO

C
2H₂(g) + O₂(g) → 2 H₂O (g)

D
2H₂(g) + O₂(g) → 2 H₂O (g)

Question 10
1 / -0

How many species (reactants and products) in the following reaction are in the gaseous state?

2Fe + 3H₂O →Fe₂O₃+ 3H₂

A
1

B
2

C
3

D
4

Question 11
1 / -0

What is the chemical name for Vitamin C?

A
Folic Acid

B
Biotin

C
Ascorbic Acid

D
Tocopherols

Question 12
1 / -0

Which of the following is not a limitation of Mendeleev's periodic table?

A
Position of the noble gases

B
Position of isotopes

C
Position of hydrogen

D
Anomalous pairs

Question 13
1 / -0

What is the scattering of light by the particles in a colloidal solution called?

A
Tyndall effect

B
Rayleigh scattering change

C
Pure spectrum

D
Angular dispersion

Question 14
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Which of the following elements belongs to the group IA in the modern periodic table?

A
Be

B
Rb

C
He

D
B

Question 15
1 / -0

Which of the following can be defined as the feeding of complex organic matter by ingestion, which is subsequently digested and absorbed?

A
Holozoic nutrition

B
Parasitic nutrition

C
Chemosynthesis nutrition

D
Saprotrophic nutrition

Question 16
1 / -0

The transmission of a nerve impulse across a synapse occurs by

A
covalent bond formation between two dendrites

B
diffusion of neurotransmitter across the cleft

C
physical contact of axon to dendrite

D
movement of potassium ions across the cleft

Question 17
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Phagocytosis is the ingestion of bacteria or other material by phagocytes and amoeboid protozoans. High abundance of which of the following organelles in their cytosol will help in the process?

A
Golgi bodies

B
Endoplasmic reticulum

C
Mitochondria

D
Lysosome

Question 18
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In some organisms, the unfertilised egg can develop into a new individual. What is this development without fertilisation called?

A
Totipotency

B
Emasculation

C
Parthenogenesis

D
Hybridisation

Question 19
1 / -0

The hormone that promotes secondary sexual characters in human male is:

A
Oestrogen

B
Progesterone

C
Luteinising hormone

D
Testosterone

Question 20
1 / -0

In some animals, extreme environmental conditions determine the sex of the child. In turtles, males are predominant below

A
35^oC

B
27^oC

C
25^oC

D
39^oC

Question 21
1 / -0

Germ cells consist of only a single set of genes. These are produced by the process of

A
meiosis

B
mitosis

C
binary fission

D
parthenogenesis

Question 22
1 / -0

Which property makes CO₂ an effective heat-trapping greenhouse gas?

A
Ability to absorb and re-emit infrared radiation

B
Ability to emit ultraviolet radiation

C
Ability to absorb cosmic rays

D
Ability to release gamma rays and heat

Question 23
1 / -0

The genetic material of endangered species can be preserved by

A
gene pool

B
gene library

C
gene bank

D
gene laboratory

Question 24
1 / -0

What is the full form of OTEC with context to energy?

A
Ocean Thermal Energy Conversion

B
Ocean Thermal Energy Consumption

C
Over Thermal Energy Consumption

D
Ocean Temperature Energy Conversion

Question 25
1 / -0

What is a biodiversity hotspot?

A
Region having volcano eruptions

B
Region where rocks melt to generate magma

C
Biogeographic region with a significant reservoir of biodiversity that is under threat from humans

D
Biogeographic region with a significant reservoir of biodiversity that has extreme weather condition

Question 26
1 / -0

What is the pigmented vascular layer of the eyeball between the retina and the sclera called?

A
Iris

B
Choroid

C
Cornea

D
Pupil

Question 27
1 / -0

An object is moving towards the plane mirror with speed 'v'. Then, the speed of the image as observed by an object is

A
2v

B
v

C
4v

D
Cannot be determined

Question 28
1 / -0

Which of the following is used to reverse the direction of current in a DC motor?

A
Solenoid

B
Switch

C
Commutator

D
Magnetic needle

Question 29
1 / -0

Which of the following materials can be used to increase the intensity of the magnetic field in an electromagnet?

A
Aluminium

B
Soft iron core

C
Wood

D
Plastic

Question 30
1 / -0

The solar energy reaching the periphery of the Earth's atmosphere is considered to be constant for all practical purposes, and is known as the solar constant. What is its value?

A
1.14 kJ m^-2

B
1.2 kJ m^-2

C
1.4 kJ m^-2

D
1.44 kJ m^-2

Question 31
1 / -0

Solid calcium oxide reacts vigorously with water to form calcium hydroxide with the liberation of heat. This process is known as slaking of lime. Again, calcium hydroxide dissolved in water to form its solution is called lime water.

Which among the following statements are true about slaking of lime and the solution formed?

(I) It is an exothermic reaction.
(II) It is an endothermic reaction.
(III) The pH of resulting solution is greater than 7.
(IV) The pH of resulting solution is less than 7.

A
(I) and (III)

B
(II) and (III)

C
(I) and (IV)

D
(II) and (IV)

Question 32

1 / -0

An object is approaching the concave mirror having focal length F. An object is approaching the mirror very far away from the centre of curvature. Based on above information, match the entities of Column A with the entities of Column B.

Column A	Column B
I. Speed of the object is more than the speed of the image.	a. Object is at 2F.
II. Size of the erect image is more than the size of the object.	b. Object is beyond 2F.
III. Size of the image is the same as the size of the object.	c. Object is in between F and 2F.
IV. Speed of the image is more than the speed of the object.	d. Object is between pole and F.

(I) – (d), (II) – (b), (III) – (a), (IV) – (c)

(I) – (b), (II) – (d), (III) – (a), (IV) – (c)

(I) – (b), (II) – (d), (III) – (c), (IV) – (a)

(I) – (d), (II) – (c), (III) – (a), (IV) – (b)

Question 33
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The following are given some statements. Select the option which shows the correct statement(s) regarding metals and non-metals.

Statements:
I. Metals have 1 to 3 electrons in the valence shell and non-metals have 4-8 electrons in their valence shell.
II. Metallic oxides give acids on reaction with water and non-metallic oxides give bases on reaction with water.
III. Among the metals, the less electropositive metals displace the more electropositive metals from their salts.
IV. Non-metals lose electrons from their valence shell to attain a stable configuration and form cations.
V. Metals like Au and Pt also form oxides.

A
Only I

B
Both I and II

C
I, II and III

D
I, III and V

Question 34
1 / -0

A bar magnet is released into a copper ring which is directly below it. What is true about the acceleration of the magnet?

A
Greater than 'g'

B
Equal to 'g'

C
Less than 'g'

D
Cannot be determined

Submit Test

NSO - Mock Test...

Question 1

432

442

369

378

Question 2

TVUSMS

TUVMSM

TVUMSM

TUVMMS

Question 3

FRYT

GRYT

FSYT

FRZT

Question 4

Tritium

Protium

Deuterium

Helium

Question 5

Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.

A solution of a mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7.

pH of pure neutral water at 25oC is 7.

A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4.

Question 6

triacidic

diacidic

monoacidic

None of these

Question 7

Heating the solid mixture in a test tube

Dissolving the mixture in CS2

Moving a magnet through the mixture

Passing the mixture through a sieve

Question 8

Coal

Petroleum

Firewood

Electricity

Question 9

HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (g)

2KI + PbSO4 → PbI2 + K2SO

2H2 (g) + O2 (g) → 2 H2O (g)

2H2 (g) + O2 (g) → 2 H2O (g)

Question 10

1

2

3

4

Question 11

Folic Acid

Biotin

Ascorbic Acid

Tocopherols

Question 12

Position of the noble gases

Position of isotopes

Position of hydrogen

Anomalous pairs

Question 13

Tyndall effect

Rayleigh scattering change

Pure spectrum

Angular dispersion

Question 14

Be

Rb

He

B

Question 15

Holozoic nutrition

Parasitic nutrition

Chemosynthesis nutrition

Saprotrophic nutrition

Question 16

covalent bond formation between two dendrites

diffusion of neurotransmitter across the cleft

physical contact of axon to dendrite

Addition of one drop of concentrated HCl in NH₄OH solution decreases pH of the solution.

A solution of a mixture of one equivalent of each of CH₃COOH and NaOH has a pH of 7.

pH of pure neutral water at 25^oC is 7.

A cold and concentrated H₂SO₄ has lower H⁺ ion concentration than a dilute solution of H₂SO₄.

Dissolving the mixture in CS₂

HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (g)

2KI + PbSO₄→PbI₂+ K₂SO

2H₂(g) + O₂(g) → 2 H₂O (g)

2H₂(g) + O₂(g) → 2 H₂O (g)

35^oC

27^oC

25^oC

39^oC

1.14 kJ m^-2

1.2 kJ m^-2

1.4 kJ m^-2