NSO - Mock Test

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Question 1
1.2 / -0

Directions: Find the missing term in the following series.

10, 37, 101, 226, ?

A
432

B
442

C
369

D
378

Question 2
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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
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A person is walking towards west. After walking for 30 m, he turns to his right and walks 20 m more. After that, he turns towards west and walks 40 m. Finally he turns to his left and again walks 20 m. How far is he now from the starting point?

A
40 m

B
50 m

C
60 m

D
70 m

Question 4
1.2 / -0

Two positions of a dice are given. Which number would be at the top when 2 is at the bottom?

A
6

B
5

C
4

D
3

Question 5
1.2 / -0

Directions: Complete the following analogy.

EFRT : GJXB : : DNSL : ?

A
FRYT

B
GRYT

C
FSYT

D
FRZT

Question 6
1.2 / -0

Directions: Find the mirror image of the following.

A

B

C

D

Question 7
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Directions: Select the missing part of the following figure.

A

B

C

D

Question 8
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What is the minimum number of straight lines which can be used to draw the following shape?

A
6

B
8

C
12

D
16

Question 9
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Directions: Find the figure from the following options which satisfies the same conditions of placement of dots as given in figure X.

A

B

C

D

Question 10
1.2 / -0

Directions: Find the water image of the following.

A

B

C

D

Question 11
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Which of the following statements about the given reaction is/are not correct?

Fe(s) + CuSO₄(aq) FeSO₄(aq) + Cu(s)

I. CuSO₄ is getting reduced.
II. CuSO₄is acting as a reducing agent.
III. Fe is acting as a reducing agent.
IV. Fe is getting oxidised.

A
III only

B
I, II and IV

C
II and IV

D
I and III

Question 12
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For general consideration:

In an acidic solution, [H₃O⁺] > [OH^-] and 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 mole of each of CH₃COOH and NaOH has a pH of 7.

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

D
Concentrated H₂SO₄ has lower H⁺ ion concentration than a dilute solution of H₂SO₄.

Question 13
1.2 / -0

Which of the following is a monoacidic base and a weak alkali?

A
Ca(OH)₂

B
NaOH

C
NH₄OH

D
Mg(OH)₂

Question 14
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Which of the following statements regarding metals and non-metals is/are correct?

I. Metals have 1 to 3 electrons in their valence shell and non-metals have 4-8 electrons in their valence shell.
II. Metallic oxides form acids on reaction with water and non-metallic oxides form bases.
III. Among the metals, the less electropositive metals displace the more electropositive metals from their salt solutions.
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 readily.

A
Only I

B
Both I and II

C
I, II and III

D
I, III and V

Question 15
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Which of the following is a non-commercial conventional source of energy?

A
Coal

B
Petroleum

C
Firewood

D
Electricity

Question 16
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Which of the following chemical equations represents a precipitation reaction?

A
HCl + NaOH NaCl + H₂O

B
2KI + PbSO₄PbI₂+ K₂SO₄

C
2H₂ + O₂2H₂O

D
None of these

Question 17
1.2 / -0

Which of these options represents denatured spirit?

A
Pure ethanol

B
Ethanol and methanol (5%)

C
Ethanol and methanol (50%)

D
Pure methanol

Question 18
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The following figure represents a chemical reaction, which can be categorised as a:

a. Decomposition reaction
b. Combination reaction
c. Displacement reaction
d. Oxidation reaction

A
Only a

B
Both b and c

C
Both b and d

D
Only d

Question 19
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What is the chemical name for Vitamin C?

A
Folic Acid

B
Biotin

C
Ascorbic Acid

D
Tocopherols

Question 20
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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 21
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Strips of metal X were dipped into two solutions as shown:

A greyish metallic deposit was found on both the strips. Which of the following could be metal X?

A
Al

B
Fe

C
Cu

D
Sn

Question 22
1.2 / -0

Which of the given elements A, B, C, D and E respectively with atomic numbers 2, 3, 7, 10 and 20 belong to the same period?

A
A, B, C

B
B, C, D

C
A, D, E

D
C, D, E

Question 23
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In a certain population of rabbits, there are two alleles for coat colour, brown and white. Brown is dominant and white is recessive. Wolves are also present in the area and rabbits constitute a major portion of their diet. If the climate were to change such that snow covered the ground for much of the time, what change would you expect from the options given below?

A
The frequency of white allele would increase.

B
The frequency of brown allele would increase.

C
The frequency of white allele would decrease.

D
None of the above

Question 24
1.2 / -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 25
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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
Centriole

Question 26
1.2 / -0

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 27
1.2 / -0

Study the tables related to blood sugar levels.

Malfunctioning of which organ is responsible for the disease that can be inferred by the data given above?

A
Ovary/Testis

B
Kidney

C
Liver

D
Pancreas

Question 28
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Study the flow chart given below.

Choose the option that gives the correct inference about the information given above.

A
PTH and CT act synergistically to each other to control plasma calcium level.

B
PTH and CT act independently of each other to control plasma calcium level.

C
PTH and CT act antagonistically to each other to control plasma calcium level.

D
No conclusion can be drawn from the flow chart given.

Question 29
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The diagram of the human heart is given below.

Choose the option that correctly identifies X, Y and Z.

A
X: Inferior vena cava
Y: Left pulmonary artery
Z: Aorta

B
X: Superior vena cava
Y: Aorta
Z: Left pulmonary artery

C
X: Aorta
Y: Left pulmonary artery
Z: Superior vena cava

D
X: Inferior vena cava
Y: Right pulmonary artery
Z: Aorta

Question 30
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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 31
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A person with blood type AB has

A
O antigens circulating in the plasma

B
both A and B antigens circulating in the plasma

C
both A and B antigens on the surface of RBCs

D
no antigens on the surface of red blood cells

Question 32
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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 33
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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 34
1.2 / -0

The angle of minimum deviation from a prism is 30°. If the angle of prism is 60°, then what is the refractive index of the material of the prism?

A
1.625

B
1.5

C
1.725

D
1.414

Question 35
1.2 / -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 36
1.2 / -0

An object is moving towards a plane mirror with speed 'v' and the mirror is also moving towards the object with speed 'v'. The speed of the image as observed by the object will be

A
3v

B
v

C
2v

D
Cannot be determined

Question 37
1.2 / -0

A thin prism of angle 15° gives a deviation of 6°. What is the refractive index of the material of the prism?

A
1.15

B
1.10

C
1.4

D
1.25

Question 38
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If a beam of yellow light having wavelength 600 nm travelling in vacuum enters a glass slab having refractive index 1.5, then which of the following statements is/are true?

(A) Its wavelength remains the same.
(B) Its wavelength becomes the same as that of blue colour.
(C) Energy of the photons remains the same.
(D) Energy of the photon decreases.

A
Only (A)

B
(B) and (C)

C
(A) and (C)

D
(B) and (D)

Question 39
1.2 / -0

A person suffering from long sightedness can see distant objects clearly but cannot see the nearby objects with the same clarity. This is because

A
the eye lens focusses the image behind the retina

B
the eye lens focusses the image before the retina

C
the iris is not able to adjust the light entering the eye

D
the focal length of the eye lens is more than the diameter of the eye ball

Question 40
1.2 / -0

Consider the following circuit:

How would the readings of the voltmeter and the ammeter change when identical resistance is connected in parallel with the given resistance?

A
Reading of the voltmeter will increase and the reading of the ammeter will decrease.

B
Reading of the voltmeter will decrease and the reading of the ammeter will increase.

C
Reading of the voltmeter will increase and the reading of the ammeter will remain the same.

D
Reading of the voltmeter will remain the same and the reading of the ammeter will increase.

Question 41
1.2 / -0

What is the current drawn by an electric heater rated at 500 W, 200 V, when connected to 100 V source?

A
2.5 A

B
1.25 A

C
1 A

D
0.5 A

Question 42
1.2 / -0

What is the effective resistance between A and B for the given circuit?

A
2R

B
4R

C
3R

D
R

Question 43
1.2 / -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 44
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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 45
1.2 / -0

The amount of 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 46
1.2 / -0

Solid calcium oxide reacts vigorously with water to form calcium hydroxide and the vessel becomes hot in the process. 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) CaO is neutral, but Ca(OH)₂ is an alkali.
(III) The pH of the resulting solution is greater than 7.
(IV) The pH of the solution formed when equal quantities Ca(OH)₂ and HCl are mixed is less than 7.

A
(I) and (III)

B
(II) and (III)

C
(I) and (IV)

D
(II) and (IV)

Question 47

1.2 / -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 erectimage 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 48
1.2 / -0

Observe the diagram given below.

Choose the incorrect statement regarding A, B, C and D.

A
A is covered by a waxy and sticky substance.

B
B is responsible for transferring the male germ cells to the ovary.

C
C develops into a seed.

D
The fusion of male gamete with D gives rise to a zygote.

Question 49
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Analyse the two statements given below and select the correct option.

Statement I: Soaps are sodium salts of higher fatty acids.
Statement II: Sodium chloride is one of the chief materials used for the preparation of soap.

A
Both statements I and II are correct, but statement II is not the correct reason for I.

B
Both statements I and II are correct and statement II is the correct reason for I.

C
Statement I is correct, but statement II is incorrect.

D
Both statements I and II are incorrect.

Question 50
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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

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NSO - Mock Test...

Question 1

432

442

369

378

Question 2

TVUSMS

TUVMSM

TVUMSM

TUVMMS

Question 3

40 m

50 m

60 m

70 m

Question 4

6

5

4

3

Question 5

FRYT

GRYT

FSYT

FRZT

Question 6

Question 7

Question 8

6

8

12

16

Question 9

Question 10

Question 11

III only

I, II and IV

II and IV

I and III

Question 12

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

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

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

Concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4.

Question 13

Ca(OH)2

NaOH

NH4OH

Mg(OH)2

Question 14

Only I

Both I and II

I, II and III

I, III and V

Question 15

Coal

Petroleum

Firewood

Electricity

Question 16

HCl + NaOH NaCl + H2O

2KI + PbSO4 PbI2 + K2SO4

2H2 + O2 2H2O

None of these

Question 17

Pure ethanol

Ethanol and methanol (5%)

Ethanol and methanol (50%)

Pure methanol

Question 18

Only a

Both b and c

Both b and d

Only d

Question 19

Folic Acid

Biotin

Ascorbic Acid

Tocopherols

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

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

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

Concentrated H₂SO₄ has lower H⁺ ion concentration than a dilute solution of H₂SO₄.

Ca(OH)₂

NH₄OH

Mg(OH)₂

HCl + NaOH NaCl + H₂O

2KI + PbSO₄PbI₂+ K₂SO₄

2H₂ + O₂2H₂O

X: Inferior vena cava
Y: Left pulmonary artery
Z: Aorta

X: Superior vena cava
Y: Aorta
Z: Left pulmonary artery

X: Aorta
Y: Left pulmonary artery
Z: Superior vena cava

X: Inferior vena cava
Y: Right pulmonary artery
Z: Aorta