National Science Olympiad Forum By SOF Olympiad Trainer

Sreenath from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi

Subject :NSO Class : Class 3

The given figure is of a potted plant. Which of the following conditions may be responsible for such condition of the plant ?

(i) No water

(ii) No light

(iii) No minerals

(iv) Attacked by diseases

(A) (i) only

(B) (i) & (ii)

(C) (i), (ii) & (iii)

(D) (i), (ii), (iii) & (iv).

Ans 1:

Sreenath from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi

Class : Class 5

Ans 2:

Theertha sudeep from National academy for learning, Bengaluru

Class : Class 7

D

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Rishab Murthy from Birla Public School , Doha

Subject :NSO Class : Class 4

Which of the following statements is true?

(A) Grasses are non-flowering plants

(B) All roots are found underground

(C) Money plant is an example of creeper

(D) Some plants can grow completely under water.

Ans 1:

ESHA SINGHAL from DPS Noida , Indirapuram Ghaziabad

Class : Class 8

grasses are non flowering plants

Ans 2:

K V S HARSHIT from BSP EMMS SECTOR-9 BHILAINAGAR DIST DURG CG, Bhilai

Class : Class 4

Ans 3:

RHETAMA DAS from Usha Martin school,Malda, MALDA

Class : Class 3

Money plant is an example of creeper.

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ESHA SINGHAL from DPS Noida , Indirapuram Ghaziabad

Subject :NSO Class : Class 4

Which of the following animals lives on trees?

(A) Lemur

(B) Gorilla

(C) Baboon

(D) Walrus.

Lemur Gorilla and baboon they all live on trees

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accesstoshiri@gmail.com from sri aurobindo international school, Hyderabad

Subject :NSO Class : Class 5

If mercury is nearer to the sun, why is venus considered as the hottest planet in the solar system?

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

Mercury is the planet closest to the sun and therefore gets more direct heat. But it is not the hottest planet.

Venus is the hottest planet in the solar system. Although Venus is not closest to the sun, its dense atmosphere traps heat. As a result, temperatures on Venus are higher than the temperature on Mars.

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Vansh Goel from Spring Dale Senior School, AMRITSAR

Subject :NSO Class : Class 5

In the given diagram, air is compressed when the plunger moves from X to Y. This is because air

(A) Has no definite volume

(B) Has particles which are constantly moving

(C) Has particles which are compressible

(D) Has particles of negligible mass.

Ans 1:

Anusha Sarangi from Foundation Academy, Patna

Class : Class 6

it is not correct answer. The correct answer is (C)

Ans 2:

Saswatayu Sengupta from Don Bosco Park Circus , Kolkata

Class : Class 7

D

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Rahul kumar from Khublal yadav smarak high school bishanpur, Jamui

Subject :NSO Class : Class 9

A body of mass 5kg is moving with the 10m/s in uniform motion.force is applying on the body?

Ans 1:

pm from amity , noida

Class : Class 9

Force = Mass X Acceleration or F=ma Given: m= 5kg a= 10m/s Therefore f= 5 X 10 = 50 N

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Saujas Ghosal from Bharatiya Bidya Bhavan, Kolkata

Subject :NSO Class : Class 8

In which of the following activities is work done

(A) A boy shaking a tree

(B) Ali pushing against the wall

(C) A man pushing a stalled car

(D) A worker pushing a loaded car.
In options C and D, it is not indicated whether the car has moved or not. How do I then understand as to whether work has been done or not?

Ans 1:

from ,

Class :

Venus is the hottest planet even though Mercury is the closest planet to the Sun. The reason that Venus is hotter than Mercury is because it has an atmosphere made of carbon dioxide; it also has clouds of acid inside its atmosphere. This is called greenhouse effect.