NSO - Mock Test

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NSO - Mock Test - 6

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Weekly Quiz Competition

Question 1
1.2 / -0

Complete the following series:

FIL, GJM, HKN, ___

A
ILM

B
IJO

C
ILN

D
ILO

Solution

The patter is: + 3, + 3, + 3
The series is running according to the alphabetical order -
F + 3 = I
I + 3 = L
Then, the next letter to F is G.
G + 3 = J
J + 3 = M
= GJM
Then, the next letter to G is H.
H + 3 = K
K + 3 = N
= HKN
Then, the next letter to H is I.
So,
I + 3 = L
L + 3 = O
= ILO
Question 2
1.2 / -0

Directions: In the following question, there is a relationship between the two terms to the left of : : and the same relationship exists between the two terms to its right, out of which one term is missing. Choose the missing term from the given options.

HORSE : STABLE :: RABBIT : ?

A
Burrows

B
Shed

C
Hole

D
Den

Solution

A horse lives in a stable.
Rabbits live in burrows.
So here, the horse is to stable as rabbit is to burrows.
Question 3
1.2 / -0

If in a certain language, COMPETITION is CODED as BNLODSHSHNM, then how will DISCONTINUED be written in that code?

A
CHRBNMHSMTDC

B
CHRBNMSHMTDC

C
CHRBMNSHMTDC

D
CRHBNMSHMTDC

Solution
Question 4
1.2 / -0

Arrange the words given below in a meaningful sequence.

1. House
2. Street
3. Room
4. Town
5. District

A
3, 2, 1, 4, 5

B
3, 1, 4, 2, 5

C
3, 1, 2, 4, 5

D
3, 1, 2, 5, 4

Solution

The correct order is:

Room House Street Town District
3 1 2 4 5
Question 5
1.2 / -0

Find out the alternative figure which contains figure (X) as its part.

A
(1)

B
(2)

C
(3)

D
(4)

Solution
Question 6
1.2 / -0

Directions: Select the figure from the given options that will complete the following series.

A

B

C

D

Solution

In the first figure, there is a pentagon with a small star at the top. The next figure contains the pentagon, rotated by 180 degrees, but no star is there. Similarly, in the third figure, there is an arrow and a small square at the top. Therefore, in the next figure, the arrow will be rotated by 180 degrees while the small square will be absent. So, the answer is option 3.
Question 7
1.2 / -0

Choose the appropriate option which resembles the perfect mirror image of the following figure:

A

B

C

D

Solution

Figure in the question contains some numbers.
We have to find the mirror image of the given figure.
To find the mirror image, flip it horizontally.
The mirror image will be the same as shown in option 4.
Question 8
1.2 / -0

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.

11, 13, 17, 19, 23, 25, ?

A
26

B
27

C
29

D
37

Solution

The pattern is + 2, + 4, + 2, + 4, ..... So, the missing term = 25 + 4 = 29.
Question 9
1.2 / -0

In the following question, find out the alternative which will replace the question mark.

NATION : ANTINO :: HUNGRY : ?

A
HNUGRY

B
UHNGYR

C
YRNGUH

D
UNHGYR

Solution
Question 10
1.2 / -0

Choose the water image of Figure (X) from the given options:

Figure (X)-

A

B

C

D

Solution

Water image refers to the image which is flipped vertically. Among the given options, figure 2 represents the water image of figure X.
Question 11
1.2 / -0

A is a metallic plate and B is a wooden plate. A feels colder as compared to B during winters. Which of the following properties of the metallic plate causes this effect?

A
It is a bad conductor of heat.

B
It is a good conductor of heat.

C
The metallic plate has a shiny surface.

D
None of these

Solution

The metallic plate feels colder as compared to the wooden plate because the metallic plate is a good conductor of heat. When you touch steel, your skin is at body temperature while the steel is at room temperature, about 70 degrees Fahrenheit. Heat flows quickly from the warm skin to the highly conductive steel. Your skin rapidly cools off and feels cold. When you touch wood, it doesn't conduct heat very well and blocks the flow. Your skin doesn't cool off, and hence, doesn't feel cold.
Question 12
1.2 / -0

The temperature of Raj's room is 25°C, while that of Simran's room is 77°F. Choose the correct option describing the situation.

A
The temperature of Raj's room is more than the temperature of Simran's room.

B
The temperature of Simran's room is more than that of Raj's room.

C
Both rooms have the same temperature.

D
Nothing can be said.

Solution

Both the rooms have the same temperature because when we convert 25°C to Fahrenheit, it becomes 77°F. So, option 3 describes the situation correctly.
C / 5 = (F - 32) / 9
25° / 5 = (F - 32°) / 9
5° x 9 = F - 32°
45° + 32° = F
F = 77°
Question 13
1.2 / -0

Motion of hands while running is known as ________.

A
translatory motion

B
rectilinear motion

C
oscillatory motion

D
non-periodic motion

Solution

While running, the hands move to and fro and repeat their motion in a given interval of time. This motion is an oscillatory motion. So, option (3) is correct.
Question 14
1.2 / -0

The distance between two buses is 50 km, they are running in the same direction with the speeds of 40 km/h and 50 km/h, respectively. Find the time taken by one bus to cross the other.

A
4 hours

B
5 hours

C
2 hours

D
3 hours

Solution

Relative speed of two buses = 50 - 40 = 10 km/h
Distance = 50 km
Time taken to cover this distance = Distance/Speed = 50/10 = 5 hours.
Question 15
1.2 / -0

What is the combination of two or more cells known as?

A
Remote

B
Battery

C
Spark

D
Charge

Solution

The combination of two or more cells is known as a battery. So, option 2 is correct.
Question 16
1.2 / -0

Fuse is an application of

A
heating effect of current

B
magnetic effect of current

C
chemical effect of current

D
Physical effect of current

Solution

A fuse is a device which produce heat, when the excess current flows through it then it get melted and breaks the circuits.
Question 17
1.2 / -0

What is the correct reason for making holes in big banners, meant for promotional purposes?

A
Air takes space.

B
Air can be compressed.

C
Air exerts pressure.

D
Air is affected by heat.

Solution

Air or wind, blowing at high speeds, exerts pressure on the big banners and can tear them. Therefore holes are made in them in order to allow air to pass through the banner without damaging it.
Question 18
1.2 / -0

Which of the following option is true for the eye of a cyclone?

A
The eye of cyclone is a high pressure area.

B
The eye of cyclone is a low pressure area.

C
The eye of cyclone has a diameter of 5 km to 10 km.

D
The eye of cyclone has a radius of 5 to 10 km.

Solution

The cyclone is formed by a low pressure system, known as the eye of cyclone, with very high speed winds revolving around it.
Question 19
1.2 / -0

Which of the following options is/are TRUE?

A
Algae contain chlorophyll which gives them the green colour.

B
The main components present in carbohydrates are carbon, hydrogen and oxygen.

C
Stomata are the tiny pores present on the surface of leaves, which help in exchange of gases.

D
All of the above

Solution

All of the above statements are true. The main components presents in carbohydrates are carbon, hydrogen and oxygen. Stomata are the tiny pores present on the surface of leaves, which help in exchange of gases. Algae contain chlorophyll which gives them the green colour.
Question 20
1.2 / -0

Which of the following is used by a dentist to see the enlarged image of teeth of patients?

A
Concave lens

B
Convex lens

C
Concave mirror

D
Plane mirror

Solution

It is used as magnifying mirror The dentist uses a concave mirror to see the enlarged image of teeth of patients.
Question 21
1.2 / -0

Which of the following options is TRUE?

A
Most liquids that conduct electricity are solutions of acids, bases and salts.

B
The passage of electric current through a solution causes a chemical effect.

C
If you pass current through a copper sulphate solution, copper gets deposited on the plate connected to the negative terminal of the battery.

D
All of the above

Solution

Acids, bases and salts are electrolytes and dissociate into ions in their aqueous solutions and ions are charge carriers. Hence, the solutions of electrolytes conduct electricity.
The passage of electric current through a solution causes chemical reactions to occur.
This is the chemical effect of electric current.
On the passage of electric current through a copper sulphate solution, copper gets deposited on the plate connected to the negative terminal of the battery.
Hence, all the options are correct.
Question 22
1.2 / -0

Y is a substance that contains zinc carbonate, having basic nature, and is applied to the skin when an ant bites.
By which of the following names is Y commonly known?

A
Calamine solution

B
Ammonia

C
Milk of Magnesia

D
Antacid

Solution

Calamine lotion contains zinc carbonate (ZnCO₃).
When an ant bites, it injects formic acid into the skin, and therefore, basic zinc carbonate is applied to the skin to neutralize the effect of the acid and provide relief.
Question 23
1.2 / -0

'A' is a chemical substance that turns the china rose indicator dark pink in colour.
What is the colour change expected when methyl orange and phenolphthalein indicators are added to two separate samples of a solution of 'A'?

A
The solution turns red with methyl orange and remains colourless with phenolphthalein.

B
The solution turns yellow with methyl orange and remains colourless with phenolphthalein.

C
The solution turns red with methyl orange and pink with phenolphthalein.

D
The solution turns yellow with methyl orange and pink with phenolphthalein.

Solution

China rose is a natural indicator which gives dark pink (magenta) colour with acids and turns green with bases. Hence, 'A' is an acid.
Acids turn red when methyl orange indicator is added to them and remain colourless when phenolphthalein is added.
Therefore, option (1) is correct.
Question 24
1.2 / -0

Look at the sequence of steps taken up during the processing of wool.

Shearing Scouring Sorting X Y Weaving

The missing steps X and Y, respectively, are:

A
Carding and Spinning

B
Dyeing and Drying

C
Scouring and Ginning

D
Sorting and Scouring

Solution

The processing of wool involves the following steps in the given sequence:

Shearing Scouring/Washing Sorting/Grading Carding Spinning Weaving

Hence, option (1) is correct.
Question 25
1.2 / -0

Which of the following observations is not a clear indication that a chemical change has occurred?

A.. There is a colour change.
B. The process is endothermic.
C. A brisk effervescence is seen.
D. A precipitate is formed.
E. There is a change in the state.

A
A, B and C

B
B and E

C
B and C

D
C, D and E

Solution

A colour change and formation of a precipitate are clear indications that a new substance is formed, implying that a chemical change has occurred.
A brisk effervescence indicates evolution of a gas again implying occurence of a chemical change.
However, energy exchanges and change in state occur in both physical and chemical processes.
For example, evaporation of water is an endothermic process and is a physical change.

Decomposition of calcium carbonate is an endothermic process and is a chemical change.

The process is endothermic.
Hence, B and E are not clear indications of a chemical change has occurred.
Question 26
1.2 / -0

Directions: Analyse the two statements given below and select the correct option.

Statement I: Milk of magnesia is used as a remedy for acidity.
Statement II: Milk of magnesia is basic in nature.

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

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

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

D
Both statements I and II are incorrect.

Solution

Milk of magnesia is Magnesium hydroxide which helps to neutralize the excess of acid secreted in the stomach. Hence it is used as a remedy for acidity.

Therefore, both statements I and II are correct and II is the correct reason for I.

Question 27

1.2 / -0

The behaviour of substances P, Q, R and S with different indicators is specified below.

Turns the turmeric indicator reddish brown: P
Turns blue litmus paper red: Q
Turns green with universal indicator: R
Does not effect the odour of vanilla indicator: S

Select the option that displays the correct choice of P, Q, R and S.

	P	Q	R	S
A	NH₄Cl	HCl	H₂O	NaOH
B	NaOH	HCl	NaCl (aq)	H₂SO₄
C	NaOH	HCl	NaCl (aq)	NH₄OH
D	NH₄OH	NaOH	H₂O	HCl

A

B

C

D

Solution

Turmeric solution remains yellow with acids and turns reddish-brown with bases.
Hence, P is a base and can be NaOH or NH₄OH.
Acids turn blue litmus paper red.
Hence, Q is HCl.
Neutral solutions turn green with universal indicator.
Hence, R may be an aqueous solution of NaCl or H₂O.
Acids do not effect the odour of vanilla indicator.
Hence, S may be HCl or H₂SO₄.
Hence, option (2) is correct.

Question 28
1.2 / -0

X is the process of depositing a layer of zinc on iron, in order to prevent rusting.
What is the process called?

A
Painting

B
Electroplating

C
Alloy formation

D
Galvanisation

Solution

Galvanisation is the process of depositing a layer of zinc on iron to prevent rusting.
It forms a coating of zinc which, when intact, prevents corrosive substances from reaching the underlying iron.
Question 29
1.2 / -0

The process X, is digestion of animal waste and production of biogas.
The process Y is the use of biogas as fuel.
Choose the correct option illustrating the processes X and Y?

A
X is a chemical change and Y is a physical change.

B
X is a physical change and Y is a chemical change.

C
Both the processes involve physical changes.

D
Both the processes involve chemical changes.

Solution

The process X is digestion of animal waste by the action of anaerobic bacteria for the production of biogas and compost. This is a chemical change.
The process Y is combustion of biogas as a fuel, which is also a chemical change.
Therefore, option (4) is the correct answer.
Question 30
1.2 / -0

Which of the following options is not a chemical change?

A
Digestion of food

B
Alloying of metals

C
Setting of curd

D
Baking of cookies

Solution

An alloys is a homogenous mixture of two or more metals or metals with some non-metal.
Alloying is an example of a physical change.
Question 31
1.2 / -0

It is an animal and its adaptation is that it is white in colour in order to merge into the background, and its streamlined body and webbed feet make it a swift swimmer. Name the animal.

A
Sea turtle

B
Penguin

C
Snow leopard

D
Arctic fox

Solution

The bodies of penguins are white, and merge into the background. They have a thick layer of skin and move around in groups to keep warm.
Their streamlined bodies and webbed feet make penguins swift swimmers.
Question 32
1.2 / -0

Jack is a meteorologist. Which device is used by Jack to measure the rainfall?

A
Odometer

B
Thermometer

C
Anemometer

D
Ombrometer

Solution

In general, meteorologists measure the rainfall by using a "Rain gauge", also called 'Ombrometer' or 'Puliometer', expressed in centimetres or millimetres. So, the device used by Jack is Ombrometer.
Question 33
1.2 / -0

In which of the following regions, would animals have adaptations like sticky pads, loud voice, bright colours, strong tails?

A
Tropical rainforests

B
Deserts

C
Polar regions

D
Aquatic regions

Solution

The animals living in the tropical rainforests show all the adaptations given in the question, because tropical rainforests have extreme conditions, and to survive in those conditions, animals adapt sticky pads, loud voice, bright colours, and strong tails.
Question 34
1.2 / -0

Which of the following options shows the correct order of processes given below to make finished wool?

1. Shearing
2. Straightening, Combing and Rolling
3. Sorting
4. Dyeing
5. Scouring

A
1, 2, 3, 4, 5

B
1, 5, 3, 4, 2

C
1, 5, 3, 2, 4

D
5, 4, 3, 2, 1

Solution

Shearing is the first step in processing fibre into wool. It is the removal of the fleece of the sheep along with a thin layer of the skin.
The second step would be scouring, which is the process of washing the sheared hair. The woollen fibres are thoroughly washed in big tanks to remove grease, dust and dirt by fully mechanised machines.
The third step is sorting, which is done after scouring to separate hair of different textures and types. This is to separate the low and good quality fibres.
The fourth step is dyeing i.e., picking out of any remaining burrs (small fluffy fibres) is followed by the dyeing of fibres in various colours.
The final steps are straightening, combing and rolling. Once the dyeing process is complete, the fibres are straightened, combed and rolled into yarn.
So, the correct option is 2.
Question 35
1.2 / -0

Dhruvan rears silkworms to obtain silk from them. What is this process known as?

A
Sericulture

B
Silviculture

C
Vermiculture

D
Apiculture

Solution

The process of rearing silkworms to obtain silk from them is known as Sericulture. Although, there are several commercial species of silkworms. Bombyx mori (the caterpillar of the domesticated silk moth) is the most widely used and intensively studied silkworm.
Question 36
1.2 / -0

It is an organism that survives on dead and decaying organic matter. Which of the following is this organism?

A
Amoeba

B
Cuscuta

C
Fungus

D
Pitcher plant

Solution

An organism that feeds on or derives nourishment from decaying organic matter is known as saprotroph, and its example is fungus. So, the correct option is 3.
Question 37
1.2 / -0

Which of the following organisms live in partnership, so that they benefit from one another?

A
Decomposers

B
Saprotrophs

C
Omnivores

D
Symbionts

Solution

An organism living in symbiosis with another is known as a symbiont.
Question 38
1.2 / -0

Which of the following is true for saprotrophic nutrition?

A
Organisms give away nutrients in solution form from dead and decaying matter.

B
Organisms take in nutrients in solution form from fresh matter.

C
Organisms take in nutrients in solution form from dead and decaying matter.

D
Organisms take in nutrients in solution form from animals.

Solution

This mode of nutrition, in which organisms take in nutrients in solution form from dead and decaying matter, is called saprotrophic nutrition. Plants which use saprotrophic mode of nutrition are called saprotrophs.
Question 39
1.2 / -0

Refer to the given Venn diagram and choose the correct option representing P.

A
Cockroach

B
Frog

C
Fish

D
Earthworm

Solution

Frog can respire through both the lungs and its skin. It uses its lungs for respiration when on land. A frog can respire through the skin as well. A frog's moist skin is thin and marbled with blood vessels and capillaries close to the surface. The moisture on the skin dissolves oxygen from the air and water surrounding the frog and transmits it into the blood.
Question 40
1.2 / -0

Which of the following forms the floor of the chest cavity?

A
Diaphragm

B
Lungs

C
Ribs

D
Nasal cavity

Solution

The chest cavity is surrounded by the rib cage, while the floor is occupied by a dome-shaped muscle called diaphragm.
Question 41
1.2 / -0

Which of the following factors affect(s) photosynthesis?

(i) Temperature
(ii) Light intensity
(iii) Oxygen

A
Only (i)

B
Only (i) and (ii)

C
Only (ii) and (iii)

D
All (i), (ii) and (iii)

Solution

All the three factors i.e., temperature, light intensity and oxygen affect photosynthesis.
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesise nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Question 42
1.2 / -0

Which of the following is present in plant cell but absent in animal cell?

A
Ribosome

B
Plastid

C
Mitochondrion

D
Cytoplasm

Solution

Plastids are present in plant cell, but absent in animal cell.
The plastid is a major double-membrane organelle found, among others, in the cells of plants and algae. Plastids are the site of manufacture and storage of important chemical compounds used by the cell.
Question 43
1.2 / -0

Which two gases do plants excrete during excretion?

A
Nitrogen and Oxygen

B
Carbon dioxide and Oxygen

C
Carbon dioxide and Nitrogen

D
Hydrogen and Nitrogen

Solution

Plants need to excrete excess carbon dioxide and oxygen. Carbon dioxide is a waste product of aerobic respiration in plant cells. Oxygen is a waste product of photosynthesis.
Question 44
1.2 / -0

The process to move sugar in plants is called

A
translocation

B
adhesion

C
osmosis

D
transpiration

Solution

The process to move sugar in plants through phloem is called 'translocation'.
Translocation is the movement of materials from leaves to other tissues throughout the plant. Plants produce carbohydrates (sugars) in their leaves by photosynthesis, but non-photosynthetic parts of the plant also require carbohydrates and other organic and non-organic materials. Phloem moves sugars from the places they are made (the leaves) to various non-photosynthetic parts of the plant.
Question 45
1.2 / -0

Refer to the diagram given below.

Which is the correct identification of the part that stores bile juice?

A
S

B
R

C
Q

D
P

Solution

Gall bladder is denoted by P. It temporarily stores bile juice produced by the liver.

Question 46

1.2 / -0

Match the different layers of the forests (Column I) with their respective characteristics (Column II)

Column I	Column II
(a) Overstory	(i). Termites,bacteria,earthworm and fungi
(b) Canopy	(ii). Receives most of the sunlight
(c) Understory	(iii). Humidity is very high
(d) Forest floor	(iv). Leaves of the trees have 'drip tips'

a - iv, b - iii, c - ii, d - i

a - i, b - ii, c - iii, d - iv

a - ii, b - iv, c - iii, d - i

a - iii, b - iv, c - i, d - ii

Solution

Overstory is the top most layer in the forest that receives the maximum amount of sunlight.
The leaves in the trees present in the canopy have drip tips for the maximum flow of water.
The understory is the layer below the canopy. This layer has high humidity.
The lowest layer is the forest floor, which contains humus, decaying matter and small insects.

Question 47
1.2 / -0

Match the given statements with the correct word: Image or shadow

(i) It is formed by intersection of reflected rays.
(ii) It can be straight or inverted.
(iii) It does not provide information such as colour, structure etc.
(iv) It is never inverted.

A
(i) Image, (ii) Image, (iii) Image, (iv) Shadow

B
(i) Image, (ii) Image, (iii) Shadow, (iv) Shadow

C
(i) Image, (ii) Image, (iii) Shadow, (iv) Image

D
(i) Image, (ii) Shadow, (iii) Shadow, (iv) Image

Solution

Image is formed by intersection of reflected rays, and it can be straight or inverted.
Shadow does not provide information such as colour, structure etc., and it is never inverted.
Question 48
1.2 / -0

The given diagram shows the cross section of two different flowers. Read the statements that follow the diagram.

a. Both the flowers can grow into fruits.
b. Pollination can take place in both the flowers.
c. Both the flowers contain male and female parts.

Which statement about both the flowers is/are true?

A
Both a and b

B
Both b and c

C
Only a

D
Only c

Solution

Both the flowers can grow into fruits as both of them contain ovary. Ovary is the part that ripens into fruit. Pollination can take place in both the flowers. Flower II which contains only the female reproductive part can be pollinated by cross pollination.
Question 49
1.2 / -0

The diagram given below shows three blood vessels (A, B and C). Choose the option that gives the correct identification of A, B and C.

A
A - Artery, B - Capillary, C - Vein

B
A - Capillary, B - Artery, C - Vein

C
A - Vein, B - Capillary, C - Artery

D
A - Artery, B - Vein, C - Capillary

Solution

The correct identification is:

A - Artery, B - Vein, C - Capillary

An artery has a narrow lumen and thick elastic walls as the blood flows under pressure through them .
Veins have a wider lumen and valves to prevent backflow of blood.
Cappilaries are thin and have one celled thin wall for rapid diffusion of gases and nutrients.
Question 50
1.2 / -0

Match the following.

A
1 – x, 2 – z, 3 – w, 4 – y

B
1 – z, 2 – y, 3 – x, 4 – w

C
1 – z, 2 – x, 3 – w, 4 – y

D
1 – x, 2 – w, 3 – z, 4 – y

Solution

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NSO - Mock Test - 6

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SHARING IS CARING

Question 1

ILM

IJO

ILN

ILO

Solution

Question 2

Burrows

Shed

Hole

Den

Solution

Question 3

CHRBNMHSMTDC

CHRBNMSHMTDC

CHRBMNSHMTDC

CRHBNMSHMTDC

Solution

Question 4

3, 2, 1, 4, 5

3, 1, 4, 2, 5

3, 1, 2, 4, 5

3, 1, 2, 5, 4

Solution

Question 5

(1)

(2)

(3)

(4)

Solution

Question 6

Solution

Question 7

Solution

Question 8

26

27

29

37

Solution

Question 9

HNUGRY

UHNGYR

YRNGUH

UNHGYR

Solution

Question 10

Solution

Question 11

It is a bad conductor of heat.

It is a good conductor of heat.

The metallic plate has a shiny surface.

None of these

Solution

Question 12

The temperature of Raj's room is more than the temperature of Simran's room.

The temperature of Simran's room is more than that of Raj's room.

Both rooms have the same temperature.

Nothing can be said.

Solution

Question 13

translatory motion

rectilinear motion

oscillatory motion

non-periodic motion

Solution

Question 14

4 hours

5 hours

2 hours

3 hours

Solution