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arijit paul from New Town School, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Khwahish Sharma from Oakfield Public School , Jaipur
Class : Class 7
The answer should be C because during the last 10 seconds [ 40 second ] the distance is 10 meter not 5 meter.

Ans 2:

Neevedita Singh from Auxilium Convent School Dum Dum, Kolkata
Class : Class 7
A

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 3

Ans 1:

Neelesh Dutta from Innocent Hearts School, JALANDHAR
Class : Class 6
They are right it should be [B] .

Ans 2:

Jibran Noorshah from Mount Litera Zee School, Bengaluru
Class : Class 4
WHAT!!!!!! IT SHOULD BE (A).

Ans 3:

Aditi Mahanti from DPS North Kolkata, Kolkata
Class : Class 3
It should be a tailorbird

Ans 4:

Neelesh Dutta from Innocent Hearts School, JALANDHAR
Class : Class 6

Ans 5:

Sreenath from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 5
Tailor bird that is A

Ans 6:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
what????

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Shreesh Panigrahi from St. Xavier's High School, Kedargouri Bhubaneswar
Subject :NSO    Class : Class 8

Ans 1:

Subash kandoth from New horizon public school , Navi Mumbai
Class : Class 10
TBH2VI http://www.LnAJ7K8QSpfMO2wQ8gO.com

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Ankit Nandy from Lawrence High School, Bangalore
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Alpha, Beta, Gamma in ascending order.

Alpha particles leaves the nucleus of an unstable atom at a speed of 16,000 kilometres per second, around a tenth the speed of light.
Beta particles travel at a speed of 270,000 kilometres per second, around 98% of speed of light.
Gamma particles travel at the speed of light.

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Agnimitra Gupta from south point school, Kolkata
Subject :NSO    Class : Class 4

Ans 1:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4

Ans 2:

Aarush Thakur from DPS, Gurgaon
Class : Class 6
option d maybe

Ans 3:

Harish Divakar from Chennai public school global school, Chennai
Class : Class 4

Ans 4:

Prashanth from Gems Modern Academy, Dubai
Class : Class 5
SHOULD HAVE BEEN SPECIFIC WITH RESPECT TO X AND Y MARKING

Ans 5:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 5
ALL ARE WRONG

Ans 6:

Pratibha from Vaels billabong international, Chennai
Class : Class 5
Can somebody pls answer this question with explanation

Ans 7:

Mahati p from cornerstone the public school, chandanagar, hyderabad
Class : Class 4

Ans 8:

ArhamAnay Jain 4G from MDPS, Faridabad
Class : Class 4
all options are wrong

Ans 9:

Mahati p from cornerstone the public school, chandanagar, hyderabad
Class : Class 4
All the options are totally wrong, please change them

Ans 10:

Deepayan Das from South Point School, Kolkata
Class : Class 5
There is no specific details about which one is X or Y.So by common sense I think that it would be D.But B

Ans 11:

Me from bbps, New Delhi
Class : Class 5
if an object is cooled down the molecule structure changes from loosely packed to tightly packed. therefore none of the options is correct

Ans 12:

Arthaa Auti from Vidya valley school, pune
Class : Class 4
All are wrong. At least number of atoms should be same. So answer should be D

Ans 13:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 5
question, answer and solution is wrongall the options are showing the difference on heating

Ans 14:

sundus from salwan public school, Gurgaon
Class : Class 4
All options are WRONG

Ans 15:

Sandipta Bhattacharjee from Sri Ram Narayan Singh Memorial High School, Kolkata
Class : Class 5
B and Co are same. Intermolecular space is not decreasing in any of the situations. It is wrong.

Ans 16:

Deepak Vijayaragavan from Greenwood High, Bengaluru
Class : Class 4
Please change it. It is correct in NSO book like Harish Divakar said

Ans 17:

Archit Borkar from Whitefield Global School, Bengaluru
Class : Class 4
wrong options

Ans 18:

Samika Ranjan from The Shri Ram School Aravali, Gurgaon
Class : Class 7
please change the question.

Ans 19:

vaibhav rai from pearson school jaipur, JAIPUR
Class : Class 5
I think all options are wrong

Ans 20:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 5
PLS. CORRECT

Ans 21:

Prerona Chatterjee from Delhi Public School, Kolkata
Class : Class 5
The question is wrong... and so the answer is also misleading.

Ans 22:

Prashanth from Gems Modern Academy, Dubai
Class : Class 5
THE ANSWER IS WRONG.

Ans 23:

monisha garg from carmel convent school sector 9 chandigarh, panchkula
Class : Class 4
all options are wrong

Ans 24:

Ishit Rai from EUROSCHOOL THANE, THANE WEST
Class : Class 5
Please please please please please please please please change the question

Ans 25:

Harish Divakar from Chennai public school global school, Chennai
Class : Class 4
All the answer is wrong. In the NSO book, it is right.

Ans 26:

Anirudh Bhattacharjee from THE LEXICON INTERNATIONAL SCHOOL KALYANI NAGAR PUNR, Pune
Class : Class 4

Ans 27:

Inakshi Dev from Hemsheela, Kolkatta, Kolkatta
Class : Class 4
Are B, C, D correct.

Ans 28:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
Option b, c are the same. Pls give me a proper explanation as to why one option is correct

Ans 29:

BISWADITYA TRIPATHY from Delhi public school Bangalore east, Bangalore
Class : Class 4
Please explain the answer. I also support Baibhab that the choices given are wrong.

Ans 30:

Aparna praveen from Rajagiri, Ernakulam
Class : Class 4
is there a correction in the options given?if not please clarify with explanation

Ans 31:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 5
I also think that.Questions ,options, colums and answers didn't mentioned.

Ans 32:

shreyash rawat from podar international school, pune
Class : Class 4
4wrong question

Ans 33:

Sandipta Bhattacharjee from Sri Ram Narayan Singh Memorial High School, Kolkata
Class : Class 5
I have by mistake typed it Co sorry it will be C. I have a solution we can report error.

Ans 34:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 5
all options are wrong

Ans 35:

Arpit Pratap Singh from D P S bangalore north, Bengaluru
Class : Class 6
you are right vaibhav all are wrong

Ans 36:

Angshu Ray from DPS East, Bangalore
Class : Class 4
it is wrong

Ans 37:

Chiranjib kar from MOUNT LITERA ZEE SCHOOL, JAJPUR
Class : Class 6
Options are wrong. Molecular distance should be less.

Ans 38:

Ainesh das from Chrysalis, Bangalore
Class : Class 4
ansAll answers oposite

Ans 39:

Baibhab Tripathy from SAI INTERNATIONAL SCHOOL, BHUBANESWAR
Class : Class 6
I think al options are wrong . Please tell the correct answer

Ans 40:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
Qtn. agreed but main point is which is column X and which is column is Y??????

Ans 41:

Vidhya M. from Vibgyor High Bannerghatta, Bangalore
Class : Class 4
When a substance is cooled the molecules come closer. But there is no picture showing that the molecules are coming closer there is no correct answer. Also option B and C are the same. Can you please change it?

Ans 42:

Ainesh das from Chrysalis, Bangalore
Class : Class 4
all are wrong

Ans 43:

from , Bengaluru
Class : Class 5
The options given are wrong / confusing. Please clarify.

Ans 44:

kadambari chaudhary from chinmaya vidayala, delhi
Class : Class 4
Options are wrong. Molecular distance should be less. first fix which column is X and Y.

Ans 45:

Ishit Rai from EUROSCHOOL THANE, THANE WEST
Class : Class 5

Ans 46:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 5
b and c are all the same

Ans 47:

Yaduveer Rathore from MSMS School, Jaipur
Class : Class 4
wrong wrong wrong wrong wrong wrong

Ans 48:

Utkarsh Chakravarty from Pinnacle High International School, Mumbai
Class : Class 6
None of the options are correct according to my doubt.

Ans 49:

Saumya Asmriti from CITY MONTESSORY SCHOOL INTER COLLEGE LUCKNOW UTTAR PRADESH, Lucknow
Class : Class 4
All options are wrong.

Ans 50:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
all Q are wrong

Ans 51:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 4
the options are wrong

Ans 52:

Bhavya Jain from K R Mangalam World Scholl, GHAZIABAD
Class : Class 4
how can liquid turn into gas by freezing ? Option A does the same thing so the correct option should be D

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Agnimitra Gupta from south point school, Kolkata
Subject :NSO    Class : Class 4

Achin conducted an experiment to find out the amount of light that can pass through three different materials, a clear plastic sheet, a cardboard and a piece of tracing paper. All the materials have the same thickness. He shone a torch on the three materials and used a light sensor to measure how much light has passed through each of them. Which of the following graphs most likely shows the amount of light that has passed through each material?

A
B
C
D


Ans 1:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
AAAAAAAAA IS RIGHT

Ans 2:

Saani from Cambridge School, Mangalore
Class : Class 1
A is correct

Ans 3:

Baibhab Tripathy from SAI INTERNATIONAL SCHOOL, BHUBANESWAR
Class : Class 6

Ans 4:

Baibhab Tripathy from SAI INTERNATIONAL SCHOOL, BHUBANESWAR
Class : Class 6
I think the ‘A’ is the right answer

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ANANYA.SINGH from dps, noida
Subject :NSO    Class : Class 2

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saesha from sulochanadevi singhania school, Mumbai
Subject :NSO    Class : Class 5

Ans 1:

R K Madhav from Kendriya Vidhyalaya Kottayam, Kottayam
Class : Class 7
4 km

Ans 2:

SRIJITA MURMU from DPS Joka, Kolkata
Class : Class 5
4km

Ans 3:

naman from PSBBM, Chennai
Class : Class 1
answer will be d 4 kilo meters

Ans 4:

Reeth Bhasin from Jamnabai Narsee International School, Mumbai
Class : Class 5

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Ved Parixit Brahmbhatt from Hillwoods School, Gandhinagar
Subject :NSO    Class : Class 9

Ans 1:

Aarthi from Prince matriculation higher secondary school , Chennai
Class : Class 9
SI unit of impluse is Newton

Ans 2:

Shrestha Dutta from Julien Day School, KALYANI
Class : Class 10
force=change in momentum/time interval(del t) impulse=change in momentum=force * time interval(del t) SI unit of impulse is newton second or Ns. CGS unit of impulse is dyne second .

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Sanjana Thampy from Ncfe, Bangalore
Subject :NSO    Class : Class 9

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