CBSE Class 6 Science NSO Olympiad MCQs with Answers Set B

LOGICAL REASONING

Question. Three of the following four are alike in a certain way and so form a group. Which is the one that does not belong to the group?
A. 121
B. 143
C. 132
D. 126
Answer : D

Question. Which of the following Venn diagrams best represents the relationship amongst “Tennis fans, Cricket players, Students”?

Answer : A

Question. Pointing to a man, Anamika said “His sister is my daughter’s brother’s mother.” How is the man related to Anamika’s son?
A. Cousin
B. Father
C. Maternal Uncle
D. Can’t be determined
Answer : C

Question. Select a pair of figures which satisfies the same condition of placement of dots.

Answer : D

Question. Two arrangements I and II are given below. The elements in the two arrangements written one below the other are corresponding elements. Study both the arrangements carefully and answer the question given below.
I : T $ I E # D R H F @ % J M * D L
II : 5 8 Q 4 A K 3 U 6 W Y 1 7 V 2 9
If T8 : 5I, MV : 7 D, then FW : ?
A. 6@ 
B. 6%
C. Y@ 
D. %6
Answer : B

Question. Two positions of a dice are shown below. When number 5 is at the top, which number will be at the bottom?

A. 1
B. 2
C. 3
D. 6
Answer : C

Question. A sheet of paper is folded in a particular manner and a punch is made. Select a figure amongst the options that would closely resemble the unfolded form of given sheet.

Answer : A

Question. Select a letter-number pair from the given options to replace the question marks and continue the series

A. J/10
B. 9/I
C. M/16
D. P/11
Answer : B

Question. B is coded as 4. F is coded as 8; M is coded as 15.
Following above coding language if NEWS is coded as 4761, then which of the following represents the code of TJWR?
A. 6625
B. 6526
C. 6325
D. 6241
Answer : D

Question. There is a definite relationship between figures P and Q. Establish a similar relationship between figures R and S by selecting a suitable figure from the options that would replace the question mark in figure (R).

Answer : A

Question. If

Answer : B

Question. Select a figure from the options, which will replace the (?) of fig. (X) to complete the pattern.

Answer : A

Question. X is to the south-west of Y, L is to the east of X and south-east of Y and M is to the north of L in a line with XY. In which direction of Y is M located?
A. South
B. South-west
C. North
D. North-east
Answer : D

Question. Select a figure from the given options which will continue the series as established by the four problem figures.

Answer : C

Question. Find the missing number, if a certain rule is followed in the given pattern.

A. 18
B. 27
C. 24
D. 9
Answer : D

SCIENCE

Question. The north pole of a bar magnet picks up an iron nail.
Which of the following options is correct regarding the pole(s) induced in the nail?
A. South pole only
B. North pole only
C. A north pole and a south pole
D. None of these
Answer : C

Question. There are four pendulums as shown in the given figure. Which of the following pendulums has the longest time period?

A. P
B. Q
C. R
D. S
Answer : A

Question. Neutral insulator P is rubbed with neutral insulator Q. Insulator P becomes positively charged after the rub. Which of the following statements is correct?
A. Insulator P loses some electrons to insulator Q.
B. Insulator Q loses some electrons to insulator P.
C. Insulator P gains protons from insulator Q.
D. Insulator Q gains protons from insulator P.
Answer : A

Question. Which of the following properties is/are correct about the image formed by a plane mirror?
(i) The image is at the same distance as the object
(ii) The image is upright.
(iii) The image is laterally inverted.
A. (i) only
B. (i) and (ii) only
C. (ii) and (iii) only
D. (i), (ii) and (iii)
Answer : D

Question. Match the Column-I with Column-II and mark the correct option.
      Column-I        Column-II
(a) 300 mm          (i) 3 m
(b) 300 cm           (ii) 30 cm
(c) 300 m            (iii) 300000 m
(d) 300 km          (iv) 30000 cm
A. (a)-(iv) (b)-(i) (c)-(iii) (d)-(ii)
B. (a)-(ii) (b)-(i) (c)-(iv) (d)-(iii)
C. (a)-(ii) (b)-(i) (c)-(iii) (d)-(iv)
D. (a)-(i) (b)-(ii) (c)-(iii) (d)-(iv)
Answer : B

Question. Which of the following statements is incorrect about the Sun?
A. The Sun is a huge mass of very hot gases.
B. The Sun is the only planet that we can see in the day.
C. The distance of the Sun from Earth is about 150000000 km.
D. The Sun is important to the Earth because it provides light energy to green plants to make food.
Answer : B

Question. A plotting compass is moved slowly towards the metal bar along the path as shown in figure. The final position of the compass needle is shown in the given figure

What can you conclude about bar X based on the diagram?
A. Bar X is a magnetic material.
B. Bar X is a magnet.
C. Bar X is a non-magnetic material.
D. Bar X is either a magnet or a magnetic material.
Answer : B

Question. The factors which affect the work done on an object are
(i) force applied
(ii) distance moved by the object
(iii) mass of the object
Which of the following is/are correct?
A. (i) and (ii) only
B. (i) and (iii) only
C. (ii) and (iii) only
D. (i), (ii) and (iii)
Answer : D

Question. In the circuits shown, all the cells are identical.
One bulb requires one cell to light up to normal brightness. In which circuit do the bulbs not light up to normal brightness?

Answer : D

Question. A mixture of four different powders is taken in a petri dish. The properties of the powders are listed below in the table.

Which pair of substances would be most difficult to separate?
A. 2 and 4
B. 2 and 3
C. 3 and 4
D. 1 and 2
Answer : B

Question. A science teacher has drawn the diagrams showing the arrangement of particles in three different states of water.

A. I - Gas, Y - Heating
B. III - Liquid, Y - Cooling
C. II - Solid, X - Cooling
D. III - Gas, X - Heating
Answer : B

Question. Some changes are classified as given below

Which of the above changes are correctly matched?
A. I, II, III and V only
B. II, IV and VI only
C. I, III and V only
D. All are correct.
Answer : C

Question. Mohit heated four beakers as shown below:

The correct order of evaporation of water is
A. Q > P > S > R
B. P > S > Q > R
C. S > P > R > Q
D. P > Q > S > R
Answer : B

Question. Match the Column-I with Column-II and select the correct option from the codes given below

      a   b     c   d    e
A. (iv) (i)   (ii) (iii) (v)
B. (i)  (ii)  (iv) (v) (iii)
C. (v) (iii) (iv) (ii)  (i)
D. (v) (iv) (iii) (i)  (ii)
Answer : D

Question. Study the Venn diagram.

Centre point (•) represents which of the following change?
A. Child to an adult
B. Wet clothes to dry clothes
C. Raw egg to boiled egg
D. Cow dung to biogas
Answer : B

Question. Identify the INCORRECT statement from the following.
A. Interparticle distance is more in gas.
B. Solid has definite shape and volume.
C. Ice is heavier than water.
D. Matter can be changed from one form to another.
Answer : C

Question. Complete the following statements by selecting the appropriate option.
(1) A cotton ball initially (i) and then (ii) as it absorbs water.
(2) Groundnut oil is (iii) in water while sugar is (iv) in milk.
(3) Hand lens is (v) whereas oiled paper is (vi).

Answer : C

Question. We use different parts of different plants as food source. Refer to the labelled figure of a typical plant and select the option that correctly matches an edible plant part with its example.

A. P - Broccoli, Q - Cinnamon
B. R - Cabbage, S - Chilli
C. T - Cabbage, U - Spinach
D. Q - Clove, T - Lettuce
Answer : D

Question. Shivam tested some food items and tabulated the data as following

Amongst the given food items, which one should preferably eat after any vigorous work?
A. Fish and chicken
B. Chicken and pear
C. Fish and noodles
D. Chilly potato and noodles
Answer : D

Question.

Refer the given figures and select the incorrect option.
A. Generally the plants with Q also have R.
B. Generally the plants with P also have S.
C. Plants with Q type of roots are more easily uprooted than those with P.
D. Plants with P type of roots include grasses and cereals.
Answer : D

Question. Rohit's father experienced a heart attack. Doctor told him that his blood vessels have become narrower.
What could be the reason for this?
A. His diet has an excess of roughage and water.
B. His diet lacks proper amount of vitamins and minerals.
C. His diet has an excess of fats and carbohydrates.
D. His diet lacks proper amount of proteins and carbohydrates.
Answer : C

Question. Read the given paragraph.
Our food consists of carbohydrates, proteins, fats, vitamins and P. Carbohydrates may be simple like Q or complex like R. Proteins if deficient in diet can lead to S in children below 1 year of age. P are abundantly present in fruit peels, whole grains and add bulk to the undigested food, easing the bowel movements. Select the correct option regarding this.
A. P can either be minerals or roughage.
B. Q can be any of the glucose, fructose and cellulose.
C. R can be starch or glycogen
D. S is pellagra, a deficiency disease of proteins.
Answer : C

Question. Which of the following is an incorrect match?
         Aquatic plant               Adaptation
A. Water hyacinth             Inflated leaf stalks
B. Floating moss fern       Spongy leaves
C. Water lettuce               Tiny hairs to trap air bubbles
D. Duckweed                   Large waterproof leaves
Answer : D

Question. Read the following statements.
(i) Air dissolved in water cannot be removed from it.
(ii) Density of air decreases with increasing altitude.
(iii) Air is an element that surrounds the earth and makes earth hospitable for living organisms.
(iv) Air helps in pollination of several flowers and in the dispersal of seeds.
Which of the above statements are correct?
A. (i) and (ii)
B. (ii) and (iv)
C. (i) and (iii)
D. (iii) and (iv)
Answer : B

Question. Which of the following shows the correct match of seed and its mode of dispersal?

Answer : B

Question. Three flasks, each containing a different liquid are cooled in a basin of cold water. In the beginning of the experiment, all the three liquids are at the same level in the glass tubes. However, upon cooling, each liquid falls to a different level as shown below

From the results of this experiment, we can conclude that ________.
(i) liquid X contracts more than liquid Y
(ii) liquid Y does not contract as much liquid Z
(iii) liquid Z contracts less than liquid X
A. (i) only
B. (ii) and (iii)
C. (i) and (iii)
D. (i), (ii) and (iii)
Answer : D

Question. X is a space object that orbits around sun but in an irregular orbit that intersects orbit of a planet. What is X?
A. Neptune
B. Choran
C. Pluto
D. Titan
Answer : C

Question. Refer to the given flowchart and select the correct option regarding it.

Answer : D

Question. Read the given statements and select the correct option.
Statement 1 : The process of separation of lint and seeds from harvested cotton fibres is called ginning.
Statement 2 : Process of forming slivers from ginned material is called combing.
A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B. Both statements 1 and 2 are true but statement 2
is not the correct explanation of statement 1.
C. Statement 1 is true and statement 2 is false.
D. Both statements 1 and 2 are false.
Answer : B

Question. Which of the following graphs correctly shows the relationship between the surface area of leaves of plants, growing in a desert, with their surrounding temperature ?

Answer : B

ACHIEVERS SECTION

Question. Beena spread some iron filings uniformly on a sheet of paper. Now, she placed the given magnet on the sheet.

Answer : A

Question. Read the given passage.
Animals X, Y and Z are found in completely different habitats. Animal X is nocturnal and has developed many characters to conserve as much water as possible in the body. Animal Y has furry body with thick skin. It is large in size and has padded feet. Animal Z is adapted to live on trees, sticky pads on its feet help it to climb trees.
Which of the following can you conclude regarding the habitats of these animals?
A. Animal X lives in a place with annual rainfall of about 80-100 cm.
B. Animal Y lives in a place where days may be extremely hot and nights can be very cold.
C. Animal Z lives in an area with annual rainfall of about 20-25 cm.
D. Animal Y lives in an area where temperatures sometimes reach 0°C or fall below it.
Answer : D

Question. Observe the given diagram carefully and fill in the blanks.

Answer : C

Question. Refer to the given graph which is plotted for different fibres P, Q and R based on their quality X and select the correct option.

A. If X is fibre length, then P should be silk, Q should be wool and R should be cotton.
B. If X is tensile strength, then P should be wool, Q should be cotton, R should be flax.
C. If X is absorbency, then P should be wool, Q should be flax, R should be cotton.
D. If X is resistance to fuzzing, then P should be wool, Q should be silk, R should be cotton.
Answer : C

Question. Which of the following types of skeletal joint is not present in our hind limbs ?

Answer : C