National Science Olympiad Forum By SOF Olympiad Trainer

sarag bordoloi from dps numaligarh, golaghat

Subject :NSO Class : Class 5

A ball rolled down on an undulated slope from points P to S as shown here.

At which point ball’s kinetic energy will be lowest?

AP
BQ
CR
DS

Ans 1:

Srijita Saha from The New town School, Kolkata

Class : Class 5

The answer shuld be "s" which is option D.Please check SOF.

Ans 2:

Jai Ranjan from Next school , Mumbai

Class : Class 6

Ans 3:

Rupkatha Bhattacharyya from Ashok hall girls high school, KOLKATA

Class : Class 7

Ans 4:

Sneha Sarkar from South city international school, Kolkata

Class : Class 7

Ans 5:

Nirvi Pal from jasudben ML School, mumbai

Class : Class 5

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Shuvangi Das from Vivekananda mission school, haldia

Subject :NSO Class : Class 6

Lalita carried out the following experiment. She took a torch and covered the glass of torch with her palm in a dark place. She switched on the torch and observed that the light of torch passes out of her palm.

What do you conclude from this experiment?

ALight is translucent
BLight is opaque
CPalm is opaque
DPalm is translucent

So does this means that our palm is translucent? But then, when I place my palm in front of my eyes, why can't I be able to see my surrounding?

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Ans 1:

Shuvangi Das from Vivekananda mission school, haldia

Class : Class 9

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AARNA GARG from bethany high school, Bangalore

Subject :NSO Class : Class 3

Which of the following products do you get from the animal whose name is obtained on unscrambling the given letters?

EYONHEBE

A
B
C
D

ANS,1:A

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Ans 1:

AARNA GARG from bethany high school, Bangalore

Class : Class 4

Ans 2:

Vidit Kishore from Johnson Grammar School, Hyderabad

Class : Class 4

Figures are not clear

Ans 3:

AARNA GARG from bethany high school, Bangalore

Class : Class 4

ANS,1:A

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Ashher Pervez from DPS Bhilai, Bhilai

Subject :NSO Class : Class 8

Refer to the given table. Identify X, Y and Z and select the correct statement.

AX is more suitable for summer clothing while Y is more suitable for winter clothing.
BX is jute, Y is silk and Z is linen.
CX on burning gives odour of burning hair whereas Y on burning gives odour of charred meat.
DBoth A and B

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sarag bordoloi from dps numaligarh, golaghat

Subject :NSO Class : Class 5

Refer to the given figure representing composition of air. Identify P-S and select the correct statement.

AAnimals get R from plants.
BS in the air is needed for burning.
CPresence of P in air reduces the rate of burning.
DSpecial bacteria present in soil convert Q in air into a form that can be used by plants.

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Ans 1:

Owee from svm,buldhana, 443201

Class : Class 7

Ans 2:

Sanyog Laddha from Global Indian International School, Pune

Class : Class 6

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Keerti Saksainaa from Presentation Convent Sr. Sec. School., Delhi

Subject :NSO Class : Class 8

Refer to the given figure and select the correct statement regarding it.

(i) P is an important site for protein synthesis.
(ii) R transfers the characteristics of a cell that are formed during cell division.
(iii) Q is a dense fluid like agranular substance.
(iv) P contains DNA while R contains RNA.

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

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Ans 1:

Ayush Chauhan from Modern Public School, Bhiwadi

Class : Class 9

Ans 2:

Aditya Joel Tauro from SAINT JOSEPHS BOYS HIGH SCHOOL, BANGALORE

Class : Class 9

Ans 3:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

Ans 4:

Amrit Biswas from INDUSVALLEY PUBLIC SCHOOL, Noida

Class : Class 10

Ans 5:

Amrit Biswas from INDUSVALLEY PUBLIC SCHOOL, Noida

Class : Class 10

Ans 6:

SRIJA SRINIVASAN PAKU from KENDRIYA VIDHYALAYA ASHOK NAGAR, Chennai

Class : Class 8

Ans 7:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

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Avneet Kaur from Satpaul Mittal School , Ludhiana

Subject :NSO Class : Class 3

Each letter in the figure is connected to another letter by a straight line. In how many different ways can you form the word 'TIGER'?

A4
B5
C6
D7

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Ans 1:

Akshi Roychoudhury from Sushila birla girls school, Kolkata

Class : Class 2

Ans 2:

Avneet Kaur from Satpaul Mittal School , Ludhiana

Class : Class 3

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SOMDATTA BHATTACHARYA from Delhi Public School, Dhaligaon, Bongaigaon

Subject :NSO Class : Class 7

Observe the given figure. What do you conclude from this?

A Reduced air pressure can lift objects.
B High wind speed reduces air pressure.
C Air expands on heating.
D Atmospheric pressure increases with a decrease in temperature.

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Prisha bhuyan from Chirec international school, Hyderabad

Subject :NSO Class : Class 1

Refer to the given diagram.

Select the option that correctly represents articles P and Q.

	P	Q
A	Umbrella	Woollen gloves
B	Goggles	Raincoat
C	Umbrella	Leather boots
D	Leather jacket	Woollen cap

Why is leather boots there it should be rubber boots

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Prasanna Hegde from Vibgyor High Horomavu, BENGALURU

Subject :NSO Class : Class 3

Arpita observed the shape of the Moon every night. On 2^nd September she noted on the calendar : Day 1, New Moon. When is she most likely to observe Half Moon and Full Moon?

A8^th Sept. and 29^th Sept. respectively
B7^th Sept. and 28^th Sept. respectively
C15^th Sept. and 22^nd Sept. respectively
D8^th Sept. and 15^th Sept. respectively

D

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Ans 1:

Vidit Kishore from Johnson Grammar School, Hyderabad

Class : Class 4

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