National Science Olympiad Forum By SOF Olympiad Trainer - Page 267
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Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Vikram from AVM, Mumbai
Class : Class 5
Mistake - grapevine is a climber not creeper

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Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore
Subject :NSO    Class : Class 6

The given figure shows different arrangements of particles of an unknown substance undergoing changes I, II, III and IV.

Fill in the blanks by choosing an appropriate option. The change(s) (p) involve(s) absorption of heat while change(s) (q) involve(s) evolution of heat. In all these changes, (r) of the substance remains constant.

(p) (q) (r)
A I, II III, IV Volume
B III I, II, IV Mass
C I, II, IV III Mass
D I, II, IV III Energy


c

Ans 1:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Correct answer is C . Because P involved absorbtion of heat 1 liquid to gas ,2solid to liquid ,4solid to gas .Q involved evolution of heat (heat is given)i.e exothermic.gas to liquid.R involved substance remains constant that is Mass .mass remains constant in every medium .i.eas the density of gas decrease so the mass also decrease but it will have same mass everywhere.

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Abhigna Bharadwaj from Sri Kumarans Public School, Bangalore
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A

Z is lungs, Y is heart and X are all body parts.


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Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Subject :NSO    Class : Class 6

Ans 1:

Srinath Dave from The Heartfulness Learning Centre, Hyderabad
Class : Class 6
Thx

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

Wool is an animal fibre while flax, coir and sisal are plant fibres. Cotton fibre is obtained from seeds of cotton plant while jute, flax and hemp fibres are obtained from stems of plants. Polyester, nylon and acrylic are man-made or synthetic fibres while silk is natural fibre. Coir is plant fibre while shahtoosh, wool and silk are animal fibres.


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Pratham Dave from GNS, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Pratham Dave from GNS, Bangalore
Class : Class 7

Ans 2:

Aabhya Trigunayat from Seth MR Jaipuria, FATEHPUR
Class : Class 5

Ans 3:

Sankha from Pathabhavan , Bolpur
Class : Class 8
Answer B

Ans 4:

Aabhya Trigunayat from Seth MR Jaipuria, FATEHPUR
Class : Class 5

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Koyel Biswas from Adamas World School, Kolkata
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Foods that give us energy to work and play are carbohydrates, like rice. Foods that make our bones and muscles strong are proteins, like cottage cheese. Foods that protect us from falling ill are protective foods (vitamins and minerals), like apple.


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Yakshita Rathor from Divine Child, Mumbai
Subject :NSO    Class : Class 9

Ans 1:

Aryan from G d Global school, Azamgarh
Class : Class 9
Right answer is 0

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Manya Sharma from DPS NOIDA, Noida
Subject :NSO    Class : Class 8

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Manya Sharma from DPS NOIDA, Noida
Subject :NSO    Class : Class 8

Ans 1:

ALICE from Delhi Public School, UDAIPUR
Class : Class 8

Ans 2:

from ,
Class :
B

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Sourish Mahakul from Delhi Public School Electronic City, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Enrique sen from Delhi public school panvel, Navi mumbai
Class : Class 5
Answer is option c

Ans 2:

Ashwak from Cambridge, Jalandhar
Class : Class 8
The answer is C

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