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ila gupta from GIIS Dubai, Dubai
Subject :NSO    Class : Class 3

Ans 1:

aarav m from kumarans, bengaluru
Class : Class 3
D

Ans 2:

from ,
Class :
P. Because water polluted by Industrial waste and farm pesticides will still have pollutants that cannot be cleaned by the water treatment plant.

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Shomili from Global Indian International School, Singapore
Subject :NSO    Class : Class 6

Ans 1:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 7
The answer should be A.When the object is close to the bulb more light will be diffracted so the image will not be sharp.I have performed this at a lab.

Ans 2:

Deeptajit Roy from Gems Modern Academy, Dubai
Class : Class 8
answer is A. i just checked this with my lamp

Ans 3:

Shweta Garg from apeejay school noida, Ghaziabad
Class : Class 3

Ans 4:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
Answer is A probably we should complain

Ans 5:

Praneeth from Null, Null
Class : Class 7
The answer must be A. We have performed this experiment at our school.

Ans 6:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
Report error

Ans 7:

Shweta Garg from apeejay school noida, Ghaziabad
Class : Class 3
the questions below please give her an appointment on Wednesday morning or Sunday or Friday or Thursday or Wednesday or Tuesday or Monday or Saturday afternoon to be more difficult times that he doesn't say they can't have enough

Ans 8:

sujata patel from Podar International, Pune
Class : Class 6
aaaaaaaaaaaaaaaaaaaaa

Ans 9:

Anav Jain from DPS , Delhi
Class : Class 5
answer is A . I checked with a torch.

Ans 10:

Shreyan from San, Pune
Class : Class 6
A

Ans 11:

Deeptajit Roy from Gems Modern Academy, Dubai
Class : Class 8
the answer is A, the shadow is sharp or perfect in shape when close to a screen

Ans 12:

Saurabh from Global Indian international school, Singapore
Class : Class 7

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Dhruvi from Delhi Public School, Navi Mumbai
Subject :NSO    Class : Class 5

Ans 1:

Mishika shah from little angels high school, gwalior
Class : Class 6
Ans is b

Ans 2:

Sumit G from Greenwood High International, Bengaluru
Class : Class 8
B

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Dhruvi from Delhi Public School, Navi Mumbai
Subject :NSO    Class : Class 5

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Dhruvi from Delhi Public School, Navi Mumbai
Subject :NSO    Class : Class 5

Ans 1:

Kevin Frederick S from Stanes School - ICSE, Coimbatore
Class : Class 5
hulyh

Ans 2:

Aarush Thakur from DPS, Gurgaon
Class : Class 6
B) 66

Ans 3:

from , Kanpur
Class : Class 8
C.72

Ans 4:

Anhad from Chrysalis, Bangalore
Class : Class 5
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

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Dhruvi from Delhi Public School, Navi Mumbai
Subject :NSO    Class : Class 5

Ans 1:

Ruchi Khanna from strawberry fields high school , Chandigarh
Class : Class 6
can anyone explain how??really puzzled!

Ans 2:

Aadit Dasburma from National Public School .HSR Layout , Bengaluru
Class : Class 5
Even I don't know how to solve it.

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SATISH GUDWANI from mvn, Faridabad
Subject :NSO    Class : Class 6

The given diagram shows the positions of four different objects after they have been dropped into a trough of water. Which of the following correctly matches the objects used?


A 1- Ping pong ball, 2 – marble, 3 - crushed aluminium foil, 4 - iron rod

B 1 – Ping pong ball, 2 – iron rod, 3 – crushed aluminium foil, 4 – marble

C 1 – Crushed aluminium foil, 2 – ping pong ball, 3 – iron rod, 4 – marble

D1 – Crushed aluminium foil, 2 – iron rod, 3 – marble, 4 – ping pong ball


plz explain how

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Aarti golyan from Indian school sohar, sohar
Subject :NSO    Class : Class 7

Ans 1:

Nikhil Handa from Army Public School,Dhaula Kuan, New Delhi
Class : Class 8
C would be the answer

Ans 2:

Senthil Kumar from ARB INTERNATIONAL SCHOOL, Coimbatore
Class : Class 7
I THINK SO OPTION C IS THE CORRECT OPTION.BECAUSE GUPPY FISH WILL EAT THE PLANTS ,WHEN IT IS REDUCED THEN NO ONE WILL EAT THE PLANTS.

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jeeva from Kendriya Vidyalaya Kottayam, Kottayam
Subject :NSO    Class : Class 7

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Soham Rupesh Bhanare from Montfort Sr. Sec. school (C.B.S.E.),Nagpur, Nagpur
Subject :NSO    Class : Class 7

Four different-sized beakers are filled with water up to the same height. The temperature of the water is same in all four beakers. If we put 100 gram of ice in each beaker, what effect will occur?


A The water temperature in beaker 2 will change the most.
B The ice will melt fastest in the beaker 3.
C The temperature changes will be same in all four beakers.
D The temperature of the water in beaker 3 will change the most.


In the OSDS, this question is there.The solutions say-(The temperature changes will be same in all four beakers)-this is the answer.

Ans 1:

Dhruvan G from Indian School Al Ghubra, Muscat
Class : Class 8
It should be a as it has more surface area

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