National Science Olympiad Forum By SOF Olympiad Trainer

from ,

Subject :NSO Class : Class 3

Refer the given figure showing changes in flag's shadow during the day. Shadows P, Q and R represent different times of the day. At what time would Preeti like to have ____.

(i) Breakfast (ii) Evening snacks

(A) (i) - R, (ii) - Q

(B) (i) - P, (ii) - Q

(C) (i) - R, (ii) - P

(D) (i) - P, (ii) - R
how

Ans 1:

from ,

Class :

(D) (i) - P,(ii)-R

Ans 2:

sanjana from NARAYANA E TECHNO , Chennai

Class : Class 8

co

Ans 3:

from ,

Class :

completely wrong question

Ans 4:

sanjana from NARAYANA E TECHNO , Chennai

Class : Class 8

very easy

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

Aditya was testing a food sample X as shown in the given figure. Which of the following statements is correct regarding this?

(A) X can be boiled egg if the sample turned blue-black.

(B) X can be raw meat if the sample did not change colour.

(C) X can be raw potato slices if the sample turned blue-black.

(D) Both (B) and (C)

Ans 1:

from ,

Class :

x can be either (B) or (C)

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

Which of the following is an incorrect match of the articles and the fibres used in their production?

(A) Mountain climbing ropes - Nylon

(B) Blankets - Wool

(C) Banknotes and high quality paper - Cotton

(D) None of these

Ans 1:

Shomili from Global Indian International School, Singapore

Class : Class 9

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Ans 2:

from ,

Class :

8aZKpr http://www.LnAJ7K8QSpfMO2wQ8gO.com

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

Animals that undergo hibernation in winters get energy by utilizing _____ stored in their bodies.

(A) Fats

(B) Carbohydrates

(C) Proteins

(D) Both (A) and (B)

Ans 1:

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore

Class : Class 7

a option

Ans 2:

from ,

Class :

(A) fats

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

Refer the given figure of a typical flowering plant and select the option that correctly fills the blank in following statement. We may not be able to see new plants of the same type if the part labelled ______ is removed.\

(A) W

(B) X

(C) Y

(D) Z

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Ans 1:

ankana pari from Bk T P P Prabi Sengupta High School, Suri Birbhum

Class : Class 6

It is part W.

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

Study the following table. Identify the change(s) listed under the wrong heading.

Physical Changes	Chemical Changes
1. Freezing ice cream	4. Souring of food
2. Whipping cream	5. Dissolving sugar for making lemonade
3. Squeezing oranges for juice	6. Burning petrol in a car

(A) 2 and 3

(B) 2 and 5

(C) 2

(D) 5

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Ans 1:

Arsh from Lahs, Gwalior

Class : Class 3

Ans 2:

Sanjana Iyer from HFS Powai, Mumbai

Class : Class 9

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

The earth wire of an electric appliance should be connected to the ________.

(A) Fuse

(B) Metal case

(C) On/Off switch

(D) Plastic handle

View All Answers (5)

Ans 1:

from ,

Class :

Earth wire is always to prevent from electric shock when metal case comes in live wire, in that case current flow to earth and it prevents electric current pass through human body

Ans 2:

from ,

Class :

Ans 3:

Ashwak from Cambridge, Jalandhar

Class : Class 9

The answer is B as metal case is only conductor and if fuse is connected it would be blown off

Ans 4:

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR

Class : Class 10

the answer should be b because the earth wire should be connected to the metal case. Current caring wire should be connected with the fuse.

Ans 5:

from ,

Class :

I think the answer should be B - if earth wire is connected to the fuse (which will burn out after a certain threshold of current passes thru' it) , it will not prevent a shock.

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Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai

Subject :NSO Class : Class 6

A piece of steel can be magnetised by stroking it with a magnet. When the magnet is moved in the direction shown, which poles are produced at X and at Y ?

	X	Y
(A)	North	North
(B)	North	South
(C)	South	North
(D)	South	South

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Ans 1:

Shomili from Global Indian International School, Singapore

Class : Class 9

The answer should be B

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SANJAY MANOCHA from ST FRANCIS DE SALES SENIOR SECONDARY SCHOOL JANAKPURI NEW DELHI, New Delhi

Subject :NSO Class : Class 6

The given Venn diagram represents some plants (P, Q, R and S) based on their edible parts. Select the incorrect option regarding this.

AP-Cumin, R-Fenugreek
BP-Rice, Q-Apple
CR-Coriander, Q-Tomato
DQ-Sugarcane, S-Cabbage

give explanation of the answer

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Ans 1:

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore

Class : Class 7

d

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Harsh from D.A.V.PUBLIC SCHOOL PATIALA, Patiala

Subject :NSO Class : Class 6

Study the given flow chart to identify food components 'X', 'Y' and 'Z'. Read the following statements regarding 'X', 'Y', and 'Z' and select the correct ones.

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

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Ans 1:

Amrik Pal from Kendriya Vidyalaya DRDO, Bangalore

Class : Class 7

c

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