CBSE Class 5 Science NSO Olympiad MCQs with Answers Set B

MENTAL ABILITY

Question. Garima is at position A facing D. She turns 180° to right and walks forward to the next position. Again she makes a 90° turn to the left. She walks on the next position where she makes another 90° turn to the left to reach the next and final position. What is her final position?

A. F
B. I
C. H
D. B
Answer : A

Question. The figure below is made up of 6 similar squares and 2 triangles. The perimeter of each square is 32 cm. What is the area of the figure?

A. 590 cm²
B. 448 cm²
C. 362 cm²
D. 236 cm²
Answer : B

Question. Which of the following statements is true in the Indian system of numeration?
I. The ones period has 3 places and the thousands, lakhs have 2 each.
II. The names of the places are - ones, tens, hundreds, thousands, lakhs, … etc.
A. Both (I) and (II) are true
B. I is true II is false
C. I is false II is true
D. Both I and II are false
Answer : A

Question. _______ numbers have only 2 factors, 1 and the number itself and, _______ numbers have _______ than two factors.
A. Prime, composite, less
B. Prime, composite, more
C. Composite, prime, more
D. Composite, prime, less
Answer : B

Question. The given graph shows 4 types of activities that a class of pupils have been signed up for.
The number of pupils who signed up for Track and Field is 1/4 that of _______.

A. Badminton
B. Choir
C. Both A and B
D. Can't be determined
Answer : B

Question. How many right angles are there on the outside of the figure in pattern 222?

A. 888
B. 670
C. 882
D. 718
Answer : A

Question. How many fifths are there in 6(3/15) + 3(3/15)?
A. 90
B. 40
C. 47
D. 18
Answer : C

Question. If second half of the english alphabets is written in reverse order, then which will be the 13th letter to the right of the 4th letter from the left?
A. S
B. U
C. W
D. Y
Answer : C

Question. The given question consists of two sets of figures.
Figures (i), (ii), (iii) and (iv) constitute the problem set. There is a definite relationship between figures (i) and (ii). Establish a similar relationship between figures (iii) and (iv) by selecting a suitable figure from the options that would replace (?) in figure (iv).

Answer : B

Question. How many right angles are there in the given word?

A. 21
B. 20
C. 14
D. 19
Answer : D

Question. Find the value of 75 – 7 × 16 ÷ 2.
A. 25
B. 19
C. 16
D. 34
Answer : B

Question. What is the sum of the 4 numbers in Square 10?

A. 160
B. 154
C. 138
D. 182
Answer : B

Question. Which of these numbers lies between 8.2 and 8.9?
A. 81.9 ÷ 9
B. 2.2 × 2
C. 6.4 + 2.6
D. 10 – 1.6
Answer : D

Question. What is the value of (P + R) – S?

A. 2.8
B. 0.8
C. 1.2
D. 0.2
Answer : B

Question. 9/10 the number of cows is the same as 4/5 the number of sheeps. If there are 225 sheeps, find the total number of cows and sheeps.
A. 400
B. 425
C. 380
D. 360
Answer : B

SCIENCE

Question. 'X' are destructive migrating insects. They migrate in swarms in search of food. They eat and destroy standing crops. What are X?
A. Locusts
B. Monarch butterflies
C. Houseflies
D. Mosquitoes
Answer : A

Question. A bottle with a plastic bag tied around its neck was pushed into a basin of water.

Water entered the bottle and the plastic bag became filled with air. Which of the following can be concluded from the experiment?
(a) Water takes up space.
(b) Air has mass.
(c) Water can be compressed.
(d) The plastic bag has no definite volume.
A. a only
B. a and b
C. b and c
D. a, b, c and d
Answer : A

Question. The given bar chart shows the amount of oxygen in four blood samples (P, Q, R and S) taken from different blood vessels in the circulatory system.

Which blood sample is most likely to be taken from the blood vessel which carries blood from the lungs to the heart?
A. P
B. Q
C. R
D. S
Answer : B

Question. Which among the following animals camouflages itself in a way that is different from the rest?

Answer : B

Question. Select the incorrect match.
A. Hinge joint – Elbow
B. Ball and socket joint – Shoulder
C. Pivot joint – Hip
D. Gliding joint – Wrist
Answer : C

Question. Select the correct statement regarding the food chain.
A. Food chains can exist independently.
B. Many food webs are interlinked to form a food chain.
C. All food chains start with green plants.
D. In the food chain, carnivores are the first consumers and herbivores are the second consumers.
Answer : C

Question. Which of these is NO T a natural calamity?
A. Forest fires
B. Famine
C. Wars
D. All of these
Answer : C

Question. This crude oil is a mixture of many compounds. So after drilling, it is sent through oil tankers to an oil refinery. Here it is processed and refined into various products like petrol, diesel, kerosene, paraffin wax and liquefied petroleum gas (LPG).
Read the above passage and select the correct option regarding it.
A. 'This' in the passage is petroleum. It is also called 'black gold'.
B. Petrol and diesel are used as fuel in vehicles.
C. LPG and kerosene are used for cooking.
D. All of these.
Answer : D

Question. Which of these is an example of class-3 lever?

Answer : A

Question. Four sugar solutions are prepared in the following ways:
(i) Cold water + One spoon of sugar crystals
(ii) Warm water + One spoon of powdered sugar
(iii) Cold water + One spoon of powdered sugar
(iv) Warm water + One spoon of sugar crystals Arrange them in an order of fastest to slowest prepared solution.
A. (iv) > (ii) > (i) > (iii)
B. (ii) > (i) > (iv) > (iii)
C. (ii) > (iv) > (iii) > (i)
D. (iii) > (iv) > (i) > (ii)
Answer : C

Question. "The Moon's gravity is only one-sixth that of the Earth."
Select the correct option with respect to the above given statement.
A. We can jump higher on the Moon than on Earth.
B. We weigh more on the Moon.
C. Moon cannot keep an atmosphere of air around itself.
D. Both A and C.
Answer : D

Question. Read the given passage on traffic rules.
Slow traffic or very heavy vehicles should drive on the ______ side of the road. Buses which have to stop for passengers should drive on the ______.
Fast moving traffic should drive on the ______ side of the road.
Select the correct sequence of words to complete the above passage.
A. Left, Left, Right
B. Left, Right, Left
C. Right, Right, Left
D. Right, Left, Right
Answer : A

Question. The graph below shows the relationship between the mass of the seed leaf and mass of the shoot of a seedling as it germinates. One curve represents the change in mass of the seed leaf and the other represents the change in mass of the shoot.
Which one of the following pairs of curves correctly represents the mass of the seed leaf and the shoot?

Mass of seed        Mass of
leaf (g)                   shoot (g)
A. Curve                 X Curve Y
B. Curve                 Y Curve Z
C. Curve                 Z Curve Y
D. Curve                 Z Curve X
Answer : C

Question. Scientists in Odisha hope to increase the population of an endangered shorebird, the piping plover.
The plover nests on the sand on beaches. Which action could scientists take to increase population of wild plovers?
A. Limit people's access to the beach so the nests are safe.
B. Trap the plovers and keep them in captivity.
C. Build their (scientists) observation compartment on the beach with the birds.
D. Put more sand on the beach for the birds to nest in.
Answer : A

Question. Select the correct option to answer the following questions.
(a) In which layer of the atmosphere, the most of the weather changes take place?
(b) Commercial airlines fly at heights of 35,000 feet.
If there are 3,280 feet in a kilometer, in which layer do airliners fly?
            a                          b
A. Mesosphere         Troposphere
B. Troposphere         Stratosphere
C. Troposphere         Mesosphere
D. Ionosphere          Stratosphere
Answer : B

Question. "Egg-laying animals having lungs and an outer covering of horny scales or plates".
Select the correct option regarding the above described group of animals?
A. Their young ones undergo metamorphosis.
B. They take proper care of their young ones.
C. They all are capable of living both on land and in water.
D. Tortoise, turtle, snake, lizard and crocodile are some of their examples.
Answer : D

Question. Three pupils are discussing an environmental issue as given below.
P1 : Excessive smoke increases the amount of carbon dioxide in the air.
P2 : This carbon dioxide does not let heat escape from the Earth. So the Earth retains more heat.
P3 : _ _ _ _ _ _ _ _ _ _ _ _
Which of these statements can fill the successive statement of the third pupil?
A. This causes an increase in Earth's temperature.
B. This causes global warming.
C. This causes acid rain.
D. Either A or B.
Answer : D

Question. Shiv lowered a magnet into a heap of iron filings.
He then lifted the magnet up. Which of the following shows what he would most likely observe?

Answer : A

Question. Match the following and select the correct option.

A. a-(i), (iii); b-(ii); c-(iv)
B. a-(i), (iv); b-(i); c-(iii)
C. a-(ii); b-(i), (iii), c-(iv)
D. a-(i), (iv); b-(ii); c-(iii)
Answer : D

Question. In which of these conditions, water will evaporate at the slowest rate?

Answer : C

Question. Which of these should be done immediately when a person catches fire?
A. Do not allow him to run around in panic.
B. Pour water on him.
C. Make him roll on the ground.
D. All of these.
Answer : D

Question. Study the given diagram showing the cross-section of a pond.

Select the correct match of aquatic plants with their place of occurrence in the pond.
A. X – Wolffia and Pistia
B. Y – Lotus and Lily
C. Z – Hydrilla and Tape grass
D. All of these
Answer : A

Question. Which of the following is incorrect about the place shown in the picture?

A. Honking is prohibited here.
B. It is a no parking zone.
C. Hospital is straight ahead and near to the given place.
D. None of these.
Answer : D

Question. Match the following and select the correct option from the codes given below.
      Column-I                     Column-II
(a) Ships                         (i) Helipad
(b) Helicopter                  (ii) Airport
(c) Aeroplane                  (iii) Harbour
(d) Bulky goods              (iv) Sea shore
(v) Water transport
(vi) Air transport
A. a-(iii); b-(i); c-(ii); d-(v)
B. a-(iii); b-(ii); c-(vi); d-(v)
C. a-(iv); b-(i); c-(vi); d-(iii)
D. a-(iv); b-(ii); c-(vi); d-(i)
Answer : A

Question. The given diagram shows seeds from a plant.
How do you think these seeds are scattered?

A. By animals
B. By splitting
C. By water
D. By wind
Answer : D

Question. Study the given flowchart carefully and select the correct option regarding it.

A. A key can be placed at box ‘H’.
B. A glass plate can be placed at box ‘I’.
C. A floor tile can be placed at box ‘J’.
D. A coin can be placed at box ‘K’.
Answer : C

Question. Which of these is rich in fibre that helps to removew aste from the body?
A. Fruits
B. Vegetables
C. Cereals
D. All of these
Answer : D

Question. Which among these cities experiences both land breeze and sea breeze?
A. Darjeeling
B. New Delhi
C. Chennai
D. Shillong
Answer : C

Question. In deserts, _______ may be the only form of moisture available to plants and animals.
A. Hail
B. Dew
C. Fog
D. Snow
Answer : B

Question. Work is said to be done, when _________.
A. We use force to move an object from its position
B. A bucket is lifted
C. Leaves fall from a tree
D. Both A and B
Answer : D

ACHIEVERS SECTION

Question. The table given below describes the characteristics of four animals

Which of the following is likely to be a beetle?
A. W
B. X
C. Y
D. Z
Answer : B

Question. Study the given table to answer the questions that follow:

(a) Which plant has an adaptation that helps it to attract pollinators?
(b) Which plants are adapted to live in an environment with little rainfall?
     a             b
A. V          II, VI
B. IV         III, V
C. III         III, V, VI
D. VI        II, V
Answer : B

Question. Study the given Venn diagram.

Which letters on the Venn diagram represent solid, liquid and gas?

Answer : B

Question. Why is it possible to see Orion in the night sky during winter, but not during summer?
A. The Earth's night time side faces Orion during the winter, and Earth's day time side faces Orion during the summer.
B. The Earth tilts on its axis as the seasons change so the North Pole is facing away from Orion during summer.
C. During summer, the Earth faces only the Moon and not any constellations.
D. N one of the above. 
Answer : A

Question. Select the correct list which classifies non-communicable and communicable diseases. [Communicable diseases (CD) and Non-communicable diseases (ND)]
A. CD : Conjunctivitis, Typhoid, Cholera 
N D : Dengue, Measles, Ring worm
B. CD : Diarrhoea, Typhoid, Jaundice, Chickenpox 
ND : Anaemia, Goitre
C. CD : Asthma, Dengue, Rickets
ND : Malaria, Conjunctivitis
D. CD : Scurvy, Arthritis, Beri-Beri
ND : Chickenpox, Tetanus, Cholera
Answer : B