National Science Olympiad Forum By SOF Olympiad Trainer

Fathima Zahra from Bhavans, Kodungallur

Subject :NSO Class : Class 5

What is the smallest egg compared on wheight? A ostrich B hummingbird C hen D robin

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Ibrahim Aslam from uttam, Ghaziabad

Subject :NSO Class : Class 4

A pendulum bob when released from position X, hits a plastic cup on ground and toppled it to its side.

Which one of the following correctly shows the conversions of energy that took place in this experiment?

A Potential energy of pendulum bob → Kinetic energy of pendulum bob → Potential energy of plastic cup → Sound energy
B Potential energy of pendulum bob → Kinetic energy of pendulum bob → Kinetic energy of plastic cup → Sound energy
C Kinetic energy of pendulum bob → Potential energy of plastic cup → Sound energy
D Kinetic energy of pendulum bob → Potential energy of pendulum bob → Kinetic energy of plastic cup → Sound energy

ð

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Ans 1:

Anshhi from Suncity School, Gurgaon

Class : Class 4

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Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

Where do you get

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Akshat Jain from Delhi Public School, Greater Noida

Subject :NSO Class : Class 6

Select the option that correctly matches the bones with the type of joint present between them.

A Femur and tibia - Ball and socket joint
B Pectoral girdle - Hinge joint and humerus
C Carpal and carpal - Gliding joint
D Humerus and ulna - Pivot joint

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Dyuti Ghosh from Mount Litera Zee School , JAJPUR ROAD

Subject :NSO Class : Class 3

Study the given classification chart for different parts of plants that we eat. Which of the following belongs to group a, b, c and d respectively?

	a	b	c	d
A	Ginger	Broccoli	Onion	Lady finger
B	Broccoli	Onion	Spinach	Lady finger
C	Pea	Beetroot	Turnip	Coriander
D	Carrot	Sugarcane	Tomato	Broccoli

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Ibrahim Aslam from uttam, Ghaziabad

Subject :NSO Class : Class 4

Dinesh wanted to test how hard are the objects made of materials P and Q, so he performed an experiment as shown.
Which of the following shows the hardness of objects P, Q and plastic in the correct order?

Hardest → Softest, Hardest → Softest

AP → Q → Plastic
BP → Plastic → Q
CQ → Plastic → P
DPlastic → P → Q

ðhow?

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Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

B

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Ibrahim Aslam from uttam, Ghaziabad

Subject :NSO Class : Class 4

In the given food web, P, Q, R, S, T and U are consumers. Which of these consumers are both plant and animal-eaters?

AP and S
BQ and U
CR and T
DP and U

?

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Ans 1:

TARA NAUTIYAL from CONVENT OF JESUS AND MARY, DEHRADUN

Class : Class 4

This was a very hard question ð¤¨ð¤¨ð¤¨ð¤¨

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

D

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archita from dps bhilai, Bhilai

Subject :NSO Class : Class 9

A sample of ammonia weighs 4 g. What mass of sulphur dioxide contains the same number of molecules as are in 4 g of ammonia?

A 64 g
B 32 g
C 15 g
D 30 g

what is the solution

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Ans 1:

Aryan from G d Global school, Azamgarh

Class : Class 9

15.06g would be the correct answer

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Dhruva from VSSIPS, Bangalore

Subject :NSO Class : Class 7

Which one of the following graphical representations correctly represents the formation of a real, inverted and enlarged image by a concave mirror?

A
B
C
D

I didnât understand the point

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Ans 1:

Nivriti from Euro, Mumbai

Class : Class 8

Answer is b

Ans 2:

Chiranjivan from PS Senior Secondary School, Chennai

Class : Class 8

Ans 3:

Saurish Kushwaha from Chinmaya Vidyalaya Annanagar, Chennai

Class : Class 7

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Hima Devireddy from Phoenix , Hyderabad

Subject :NSO Class : Class 5

Abhinav studied about the plants found in a region.
Following is an excerpt from the paragraph:
The stem are great at storing water. With their waxy coating, water can't escape and spines protect them from being food of animals. Their roots are shallow, and widely spread. They grow in a soil that can absorbs any rain.
Which region's plants did Abhinav study?

A Mountain
B Aquatic
C Desert
D Marshy

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Ans 1:

Saumya Bhope from GK Gurukul, Pune

Class : Class 5

yes desertic plants have deep not shallow roots

Ans 2:

Manogya Maheshwari from GIIS Hadapsar, Pune, Pune

Class : Class 4

That *cannot absorb any rain

Ans 3:

BHAVIK GARG from RYAN INTERNATIONAL SCHOOL SECTOR 25 ROHINI DELHI 110085, Delhi

Class : Class 5

but in deserts roots are deep to absorb water

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Sreekala Kotipalli from fks, rjy

Subject :NSO Class : Class 5

which bird is the smallest bird in the world

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