CBSE Class 5 Science NSO Olympiad MCQs with Answers Set K

MENTAL ABILITY

Question. If

(A) 170
(B) 320
(C) 490
(D) 470
Answer : D

Question. How many more triangles must be shaded so that 3/4 of the given figure is shaded?

(A) 14
(B) 11
(C) 13
(D) 12
Answer : C

Question. Find the combination of numbers so that given below letters are arranged accordingly to form a meaningful word.
                                                V       A       U        G         A
                                                1       2        3        4          5
(A) 5, 4, 2, 3, 1
(B) 4, 5, 2, 1, 3
(C) 4, 3, 5, 1, 2
(D) 4, 3, 1, 5, 2
Answer : C

Question. Which of the following figures has the equal area shaded ?

(A) 1, 2 and 3
(B) 1 and 4
(C) 2 and 4
(D) 1 and 2
Answer : D

Question. Which of the following figures is the correct decimal match of shaded part?

Answer : A

Question. The factor of a number is ______ than or ______ the number.
(A) Less, greater than
(B) Less, equal to
(C) Greater, equal to
(D) None of these
Answer : B

Question. The given diagram contains the factors of 12, 18 and 45. Find the values of x, y and z respectively.

(A) 1, 2, 9
(B) 9, 2, 1
(C) 2, 9, 1
(D) 1, 9, 2
Answer : B

Question. If you are 10 years old, you would have lived 52,56,000 seconds. Select the correct match of age to the seconds lived.
(A) 11 years – 5782400 seconds
(B) 12 years – 6302700 seconds
(C) 13 years – 6832800 seconds
(D) 14 years – 7358500 seconds
Answer : C

Question. Number of symmetrical figures is ____.

(A) 1
(B) 2
(C) 3
(D) 0
Answer : B

Question. To find cost price when there is a profit, _____ profit from _____ price and when there is loss, _____ loss to selling price.
(A) Add, Selling, Subtract
(B) Subtract, Selling, Add
(C) Subtract, Cost, Add
(D) Add, Cost, Subtract
Answer : B

Question. Read the statements below.
Statement-1 : The HCF of two numbers is the greatest number that divides both the numbers without leaving any remainder.
Statement-2 : The HCF of given numbers cannot be bigger than any one of the numbers.
Which of the following options hold?
(A) Statement-1 is true and statement-2 is false.
(B) Statement-2 is true and statement-1 is false.
(C) Both the statements are true.
(D) Both the statements are false.
Answer : C

Question. If Aparna ate 1/2 of a chocolate bar and Vishu ate 1/3 of a chocolate bar, then Aparna eat ____ more than Vishu.
(A) 1/2
(B) 1/3
(C) 1/6
(D) 5/6
Answer : C

Question. Find the missing number in the series given below.
1, 1, 2, 3, 5, 8, 13, __?_, __?_
(A) 21, 35
(B) 21, 34
(C) 18, 21
(D) 23, 32
Answer : B

Question. Which of the following is correct ?
(A) XC < XL
(B) XLIV LXIV
(C) XXVII < LX
(D) LVIII > C
Answer : C

Question. Find the weight of Stone A and Stone B in grams respectively.

(A) 150, 200
(B) 100, 50
(C) 50, 100
(D) 200, 150
Answer : C

SCIENCE

Question. Why the animal shown in the figure is considered a mammal although it lays eggs which hatch into live young ones?
1. It is able to dive underwater.
2. It has fur covering its body.
3. It has webbed feet.
4. It breathes through its lungs.

(A) 4 only
(B) 1, 2 and 3
(C) 2 and 4
(D) 1, 2, 3 and 4
Answer : C

Question. Which of the following would NOT help in soil conservation?
(A) Building embankments
(B) Terrace farming
(C) Afforestation
(D) Overgrazing by cattle
Answer : D

Question. Study the given flowchart carefully.
Identify the animals which can be placed at 1, 2, 3, 4 and 5.

Answer : D

Question. Saurabh is looking very weak and pale. He also gets tired easily. What do you think his diet is deficient in?
(A) Iodine
(B) Iron
(C) Vitamin A
(D) Vitamin C
Answer : B

Question. Which planet is the largest and the fastest spinning planet?
(A) Saturn
(B) Jupiter
(C) Venus
(D) Mars
Answer : B

Question. Which of the following match is correct about human skeleton?
(A) Number of bones in an adult human - 204
(B) Number of bones in face - 15
(C) Number of pairs of ribs - 11
(D) Number of vertebrae in the backbone - 33
Answer : D

Question. What type of joint is shown in the given figure?

(A) Hinge joint
(B) Ball and socket joint
(C) Pivot joint
(D) Gliding joint
Answer : A

Question. Kishan and his two friends Hari and Mohan are trying to get a good harvest. Which among the three would get a best harvest?
1. Kishan loosened the soil, added manure, and sowed the seeds. He sprayed pesticides to protect the crops.
2. Hari ploughed his fields, added manure, sowed seeds, and irrigated them. He sprayed pesticides too.
3. Mohan sowed seeds, added water, and sprayed pesticides whenever needed.
(A) Kishan
(B) Mohan
(C) Hari
(D) None of these
Answer : C

Question. The table below shows what four vases P, Q, R and S contain

Jasjeet wanted to find out whether chemical X helps to keep flowers fresh for a longer time. Which two vases should Jasjeet compare in order to find this?
(A) P and Q
(B) P and R
(C) Q and R
(D) Q and S
Answer : B

Question. Which would be the best material to use, while making the handle of a tea kettle?
(A) Aluminium
(B) Wood
(C) Glass
(D) Iron
Answer : B

Question. The given experiment shows a method to remove insoluble impurities from water. Identify the method.

(A) Filtration
(B) Decantation
(C) Loading
(D) Chlorination
Answer : C

Question. Which of the following statements are incorrect?
1. Dumping of solid wastes such as plastic bags, glass bottles, etc. causes land pollution.
2 Volcanoes that have erupted in recent years and may erupt again any time are called dormant volcanoes.
3. Earthquakes are measured on Richter scale.
4. Earthquakes can be detected by an instrument called seismogram.
(A) 1 and 3
(B) 2 and 4
(C) 2 and 3
(D) 1 and 4
Answer : B

Question. Which of the following statements is correct?
(A) On Moon you would find it too heavy to lift the objects that would be too easy to lift on Earth.
(B) When people in the shadow of the Moon cannot see the Sun, it is called solar eclipse.
(C) Uranus is the second largest planet in the solar system.
(D) Sun is about 7 million kilometres away.
Answer : B

Question. What does the given experiment show?
1. The weight is heavier than the flour.
2. The volume of the weight is more than the flour.
3. The flour takes up more space than the weight.

(A) 1 only
(B) 2 and 3
(C) 1 and 2
(D) 1, 2 and 3
Answer : A

Question. Fish live longer in an aquarium with water plants in it, than in one without them. Why?
(A) Because plants release carbon dioxide.
(B) Because plants release oxygen.
(C) Because plants prepare food.
(D) Because plants provide more water.
Answer : B

Question. Plants growing in deserts, as shown in the figure have spines instead of leaves. Then, how do these plants make food in the absence of leaves?

(A) Spines themselves make food.
(B) Roots make food.
(C) Green, fleshy stem makes food.
(D) Flowers make food.
Answer : C

Question. Identify the organisms P, Q and R on the basis of the given flowchart.

           P                     Q                    R
(A) Butterfly         Cockroach     Grasshopper
(B) Mosquito       Chicken          Bear
(C) Butterfly        Whale             Frog
(D) Ant                Fruit fly           Spider
Answer : C

Question. With the help of a tube, Dr. Vikas took 10 ml of juice out of the stomach into a glass. Then he put twenty tiny pieces of boiled fish into this juice. He kept the glass at the same temperature as that of our stomach. What did he observe after few hours ?
(A) Pieces of fish had dissolved
(B) Pieces of fish had not dissolved
(C) Increase in the amount of juice
(D) Clumping of pieces of fish
Answer : A

Question. Tina was asked to find the volume of the water in a container.
Which of the positions given below is the correct way of reading the volume of water?

(A) P
(B) Q
(C) R
(D) S
Answer : C

Question. There is some water in a glass. Which of the following will happen if all the water is poured into an open hot bowl from the glass?

(A) Volume of water will change.
(B) Shape of water will change.
(C) Surface area of water will increase.
(D) All of these.
Answer : D

Question. The persons shown in the given figure belong to which transport system?

(A) Roadway
(B) Airway
(C) Railway
(D) Shipping
Answer : B

Question. The given figure shows Amit pulling his sister who is sitting in a sledge. What do arrows X, Y and Z show?

Answer : B

Question. Which of the following statements are incorrect?
1. Chandrayaan-1 is the only natural satellite of the Earth.
2. Rotation of the Earth causes seasons.
3. Equator is an imaginary line around the Earth, that divides it into two equal halves.
4. Moon shines because it reflects sunlight from its surface.
(A) 1 and 2
(B) 2 and 4
(C) 2, 3 and 4
(D) 1, 2 and 3
Answer : A

Question. Match Column-I with Column-II and select the correct option from the codes given below.
      Column-I                   Column-II
(a) Brain                 (i) Nervous system
(b) Kidney              (ii) Skeletal system
(c) Skin                  (iii) Sensory system
(d) Bones              (iv) Excretory system
(A) (a)–(iv), (b)–(i), (c)–(ii), (d)–(iii)
(B) (a)–(iii), (b)–(ii), (c)–(iv), (d)–(i)
(C) (a)–(i), (b)–(iv), (c)–(iii), (d)–(ii)
(D) (a)–(ii), (b)–(i), (c)–(iii), (d)–(iv)
Answer : C

Question. The seed dispersal in the given plant takes place by ____.

(A) Wind
(B) Animal
(C) Explosion
(D) Water
Answer : C

Question. Select the INCORRECT pair.
(A) Nose - Aroma
(B) Tongue - Delicious
(C) Ear - Watch
(D) Eye - Observe
Answer : C

Question. The given figure shows parts of the tooth which have been labelled as P, Q, R and S. Identify them

Answer : D

Direction (a & b) : Ritu carried out an experiment with four strings. The strings were of equal length and thickness. She kept adding weights on each string until each string broke. She then tabulated her results in a table as shown here.
Study the table carefully and answer the questions.

Question a. What is the purpose of the experiment?
(A) To test the flexibility of each string
(B) To test the strength of each string
(C) To test the weight of each string
(D) To test the thickness of each string
Answer : B

Question b. If Ritu wanted to use a string to tie a load of 130 g, which of the following string(s) should she use?
(A) Y only
(B) X only
(C) W and Z
(D) W, X and Z
Answer : D

Question. Which of the following would help in preventing pollution?
(A) Tall chimneys must be fitted in factories.
(B) Untreated dirty water must be released into seas, rivers or lakes.
(C) We must get our vehicles fitted with CNG or LPG kits.
(D) Both (B) and (C).
Answer : C

Question. The given flowchart shows various means of transport.

Where would you place submarine, tram and metro train in the given flowchart?
Submarine      Tram         Metro
(A) b-(ii)           a-(i)           a-(ii)
(B) c-(i)            a-(ii)          b-(iii)
(C) b-(ii)           a-(ii)          a-(ii)
(D) b-(ii)           c-(i)           a-(i)
Answer : C

Question. Study the given flowchart. Which of the following options has correctly identified the examples that belong to X, Y and Z?

Answer : C

Question. Which of the following could be the symptom of measles?
(A) Red rashes on the body
(B) Blood with sputum
(C) Nails, eyes and skin become yellow
(D) Swollen neck
Answer : A

Question. The given picture X shows a rabbit.
Which two rabbits below are mostly likely the parents of X?
(A) P and Q
(B) Q and S
(C) Q and R
(D) R and S
Answer : C

Question. What happens to a mug of hot water when we leave it in the refrigerator?

(A) It gains heat from the surroundings and cools down.
(B) It loses heat to the surroundings and cools down.
(C) It gains heat from the surroundings and maintains its temperature.
(D) It loses heat to the surroundings and maintains its temperature.
Answer : B