National Science Olympiad Forum By SOF Olympiad Trainer

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:

Sanvi Thakur from National Public School marathalli, Banglore

Class : Class 4

I also wrote A

Ans 2:

Nihid Binoj from DPS International School Singapore, Singapore

Class : Class 4

C

Ans 3:

mishika tripathi from DPS, Gurugram, Haryana

Class : Class 5

ans is a

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Arnav Raj Sharma from Dpsvk, 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 Dpsvk, Gurgaon

Class : Class 9

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:

Anusha from Akm public school, Chenganacherry

Class : Class 4

a

Ans 2:

Krisha K S from JSS PUBLIC SCHOOL , HSR, Bangalore

Class : Class 6

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.

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Ans 1:

Jeevi Ran from THANGAM MOUNT litera zee school at AYOTHIYAPATTINAM , Salem

Class : Class 6

C

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Arnesh from DPS Mathura Road , New Delhi

Subject :NSO Class : Class 4

How many lines of symmetry are there in the given figure?

A1
B2
C3
D4

the answer is A 1

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Aadi from Delhi Public School , golaghat

Subject :NSO Class : Class 4

Which heavenly body does NOT have its own light?

AMoon
BSun
CStar
DBoth A and C

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Ans 1:

MAYURESH NAYAK from Swami Vivekanand International School, Mumbai

Class : Class 5

MOON

Ans 2:

Sanyam Garg from National centre for excellence, Bengaluru

Class : Class 8

Moon

Ans 3:

PAANINIDHEE CHATURVEDI from Delhi Public School, Noida

Class : Class 4

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Sneha Sarkar from South city international school, Kolkata

Subject :NSO Class : Class 4

Study the given pie chart that shows composition of air. Which of the following parts is represented by gas essential for burning?

AP
BQ
CR
DBoth A and B

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Ans 1:

MAYURESH NAYAK from Swami Vivekanand International School- Kandivali West, Mumbai

Class : Class 8

B

Ans 2:

Anusha from Akm public school, Chenganacherry

Class : Class 4

B

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Arnesh from DPS Mathura Road , New Delhi

Subject :NSO Class : Class 4

Dharini took two healthy green plants of equal size, put them in two boxes, L and M, made of different materials and placed them under the Sun, as shown in the figures. She watered both the plants daily, but the plant in set-up M died, while the plant in set-up L grew well. Which of the following best describes this?

APlant in the set-up M could not get air.
BBox in the set-up M is made up of clear glass.
CPlant in the set-up M could not get sunlight.
DBox in the set-up L is made up of wood.

the answer is C

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Ans 1:

Pragna S from APS PUBLIC SCHOOL, BASAVANAGUDI

Class : Class 4

Both of them are covered with a box only. How can you say that only plant M is not getting sunlight. Are you mad or what

Ans 2:

mishika tripathi from DPS, Gurugram, Haryana

Class : Class 5

m did not get sunlight

Ans 3:

Krisha K S from JSS PUBLIC SCHOOL , HSR, Bangalore

Class : Class 6

C

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VAIBHAV DINESH from Christ Nagar HSS, TRIVANDRUM

Subject :NSO Class : Class 4

Some children want to find out how overcrowding can affect the way plants grow. They put four pairs of plants, A, B, C and D, at the same place. Each pot is given the same amount of water each day. Which pair of plants should they use for their experiment?

A

B

C

D