National Science Olympiad Forum By SOF Olympiad Trainer

Suraj Gupta from Suncity World School, Gurugram

Subject :NSO Class : Class 4

Refer to the given figure of aquatic plants and select the correct statement.
(i) In Y stomata are present only on the lower surface of the leaves.
(ii) Wolffia and Pistia are other examples of X type of plant.
(iii) The leaves of Z plant do not have stomata.
(iv) Roots of X plant fix them to the bottom of the pond.

A(i) and (iv) only
B(ii) and (iii) only
C(i) and (iii) only
D(i), (ii) and (iii) only

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Ans 1:

SS from meridian, hyderabad

Class : Class 5

Ans 2:

Anusha Agarwal from Convent of jesus and Mary st Anthony junior college , Agra

Class : Class 8

answer should be C

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Suraj Gupta from Suncity World School, Gurugram

Subject :NSO Class : Class 4

Four metal buttons P, Q, R and S, were attached to the metal ring with same amount of wax as shown in the figure. When a lighted candle was placed below the rim of the metal ring, the metal buttons dropped down in the order, R, Q, P and S. At which position out of W, X, Y or Z, was the lighted candle placed?

AW
BX
CY
DZ

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Ans 1:

Radhika Jain from Sushila Birla Girls' School, Kolkata

Class : Class 5

Ans 2:

spj2011 from DB, Chennai

Class : Class 5

Can someone explain?

Ans 3:

Suraj Gupta from Suncity World School, Gurugram

Class : Class 4

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Suraj Gupta from Suncity World School, Gurugram

Subject :NSO Class : Class 4

Refer to the given food chain. Select the option which correctly identifies P-T.

AP-Mushroom, Q-Maize plant, R-Rat, S-Snake, T-Kite
BP-Mushroom, Q-Rat, R-Snake, S-Kite, T-Maize plant
CP-Wheat plant, Q-Rat, R-Snake, S-Kite, T-Mushroom
DP-Maize plant, Q-Mushroom, R-Snake, S-Rat, T-Kite

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Ans 1:

Aurinjay Mukhopadhyay from Future Foundation School, KOLKATA

Class : Class 5

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Suraj Gupta from Suncity World School, Gurugram

Subject :NSO Class : Class 4

Identify plants P, Q and R and select the correct statement regarding them.

(i) In plant Q, stomata are present only on the upper surface of the leaves.
(ii) Duckweed and water lettuce are other examples of Q type of plant.
(iii) The leaves of plant R do not have stomata.
(iv) Roots of plant P are fixed at the bottom of the pond.

A(i) and (iv) only
B(ii) and (iii) only
C(i) and (iii) only
D(i), (ii) and (iii) only

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Ans 1:

Paras Jain from Centre Point School, Nagpur

Class : Class 5

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Suraj Gupta from Suncity World School, Gurugram

Subject :NSO Class : Class 4

The shadow of a pole cast at some time of the day, is shown here.
Which of the following activities would Sukriti most probably be doing at this time?

AGoing for her evening walk
BReturning home from school
CEating her breakfast
DEating her dinner

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Ans 1:

Nihid Binoj from DPS International School Singapore, Singapore

Class : Class 4

C

Ans 2:

mishika tripathi from DPS, Gurugram, Haryana

Class : Class 5

ans is a

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Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon

Subject :NSO Class : Class 4

A student concludes that the material in a round bowl is liquid. Which statement about the material must be true?

AThe material is clear.
BThe material weighs 1 kg.
CThe material has a temperature of 35°C.
DThe material takes the shape of its container.

i did (D)

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Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon

Class : Class 7

i did (D)

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Koyel Biswas from Adamas World School, Kolkata

Subject :NSO Class : Class 4

Object 'M' is fragile, waterproof and sinks in water. Which of the following objects can be represented as 'M'?

AGlass cup
BSteel tumbler
CRubber ball
DSponge

b or a. its so confusing

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Ans 1:

Krisha K S from JSS PUBLIC SCHOOL , HSR, Bangalore

Class : Class 6

A

Ans 2:

Anusha from Akm public school, Chenganacherry

Class : Class 4

a

Ans 3:

ST from Sana school, Chennai

Class : Class 4

B

Ans 4:

Krisha K S from JSS PUBLIC SCHOOL , HSR, Bangalore

Class : Class 6

A

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Rishit goyal from St Peter's College, Agra

Subject :NSO Class : Class 4

Refer to the given figures representing different types of bird foot and select the INCORRECT statement regarding them.

AP could be foot of eagle having sharp claws known as talons.
BQ could be foot of woodpecker which helps it to hold onto the tree while climbing.
CR could be foot of hen which helps it to dig out insects and worms from the ground.
DS could be foot of duck which helps it to swim.