National Science Olympiad Forum By SOF Olympiad Trainer

Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai

Subject :NSO Class : Class 6

Which of the following is not an environmental problem caused due to deforestation ?
(a) Soil erosion
(b) Desertification
(c) Eutrophication
(d) Landslides

smart

Ans 1:

Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai

Class : Class 6

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Rajendra Mishra from Kendriya Vidyalaya, Koliwada, Kane Nagar, Mumbai

Subject :NSO Class : Class 6

Ritu made some observations on the behavioural pattern of earthworm which are as follows:
(i) When earthworm was placed on the rough surface such as cardboard, it showed fast, wriggling movement.
(ii) When earthworm was placed on hand, it showed less movement.
Above observations prove that ______.
(a) Earthworm cannot sense the difference in its surroundings
(b) Earthworm can respond to changing environmental conditions
(c) Earthworm can move on rough surface only
(d) Earthworm is not comfortable to move on smooth surface

yes

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MANASVI BHAKUNI from BAL BHARATI PUBLIC SCHOOL, DWARKA, NEW DELHI

Subject :NSO Class : Class 4

Which of the following figures shows of the figure is shaded ?

(A)

(B)

(C)

(D)

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

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Dimple Sanghi from ecole mondiale, Mumbai

Subject :NSO Class : Class 7

The given figure shows the parts of a germinating seed. At this stage, the plant cannot make its own food.

It obtains its food supply from

(A) P

(B) Q

(C) R

(D) S.

what is Q? and how does it provide food?

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MNW from Vibgyor Balewadi, Pune

Subject :NSO Class : Class 1

The given picture shows that

(A) Plant has not been given air properly

(B) Plant has not been watered properly

(C) Plant has not been given milk properly

(D) Both (A) and (B).

The picture is not clear enough to help reach the answer provided by you which is "D". The plant seems to be outdoors. Soil looks to be dry. Why elements in the picture show that it has not given enough air?

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Ans 1:

Manit Aggarwal from Redbridge International Academy, Bangalore

Class : Class 3

d is the answer

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MNW from Vibgyor Balewadi, Pune

Subject :NSO Class : Class 1

Where should you place your dolls and toys after playing with them ?

(A) In book shelf

(B) In the showcase

(C) On the floor

(D) In the dustbin.

The correct answer to this is a showcase according to SOF.Football and bat are toys. Do you display them in a showcase? Are games to be displayed in a showcase? Showcases are meant to display accessories and things alike.In Montessori schools world over book shelfs and just shelfs are used to keep books and toys.This is inappropriate.

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Ans 1:

Manit Aggarwal from Redbridge International Academy, Bangalore

Class : Class 3

a is the answer

Ans 2:

FALAAH.QIDWAI from DPSN, NOIDA

Class : Class 1

you are unfare

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Rishab Murthy from Birla Public School , Doha

Subject :NSO Class : Class 4

★ Clothes last longer if they are cleaned properly when they get dirty. Which of the following is not the right way to clean clothes?

AFresh ink stains on clothes can be removed with talcum powder.
BOil and grease stains on clothes can be removed with petrol.
CSilk clothes and woollen clothes should be washed with strong detergent.
DAll of the above

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Ans 1:

Rudraksh Tiwari from Kumaon Public School Dwarahat, Almora

Class : Class 4

c

Ans 2:

Agnimitra Gupta from south point school, Kolkata

Class : Class 6

please explain

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Anannya from Centre point school Katol Road, Nagpur

Subject :NSO Class : Class 4

Which of these will take the least time to get dry?

ASilk saree
BJeans
CCotton handkerchief
DWoollen skirt

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Ans 1:

Biradar Mahendra from Jai Hind Public school Udgir , Udgir

Class : Class 4

I think A

Ans 2:

Ch . Mahanth Isaac Charles Finny from Smaler Scholars, SPSR Nellore

Class : Class 4

HI, I AM MIC FINNY from 4th class. silk saree , jean sand woollen skirt take the most time to dry. cotton handkerchief drys faster so answer is cotton hand kercheif. thank you.BYE.