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pinki kashyap from kids r kids, Chandigarh
Subject :NSO    Class : Class 6

Ans 1:

Shomili from Global Indian International School, Singapore
Class : Class 9
Because making of milk to curd is a chemical change and not physical change as :- A new substance is formed, It is irreversible and permanent, It's chemical components are changed, There is energy loss while making it.

Ans 2:

khushi Joshi from Svkm , Mumbai
Class : Class 9
The answer is C

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pinki kashyap from kids r kids, Chandigarh
Subject :NSO    Class : Class 6

Ans 1:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 2:

Ajit kumar from centre point, NAGPUR
Class : Class 4
Ans.c as even a magnetic material will attract the compass needle. Only a magnet will repel another magnet and rotate before being attracted to the other magnet.

Ans 3:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 4:

Arin Gupta from DELHI PUBLIC SCHOOL, Karnal
Class : Class 6
FIRST I ALSO DO SAME OPTION THEN I UNDERSTAND THAT IF WE BRING BAR MAGNET NEAR TO IT TO PROVE THAT THIS IS A MAGNET IT WILL ALSO SHOW SOME REPULSION OR ATTRACTION SO THIS IS THE REASON IT ROTATES

Ans 5:

Parth Gupta from Presidium Gurgaon, Gurgaon
Class : Class 6
The answer should be CA) Any magnetic material can also be attracted by a strong magnet(incorrect)B) A magnetic material can also cause the compass needle to move as the needle is a magnet and the needle will move towards it (the needle is very light to cause movement but it will also move towards the object and hence incorrect )C) The question asked what CONFIRMS that an object is a magnet or not . If the 2 like poles are facing each other the object will rotate and then will attract to the other magnet . This will confirm that it is a magnet . If it had not been a magnet then it would directly be attracted to the magnet without rotating . Yes it is not necessary for it to rotate but the question says that what confirms , if the object rotates before being attracted to a magnet then it is a magnet and if it does not rotate before being attracted to magnet it can either be a magnet or not be a magnet (therefore it confirms that it is a magnet)D) If an object gets attracted to both poles of a magnet then it is a magnetic material but it confirms that it is not a magnet . Every magnet has 2 poles the north pole and the south pole , similar poles repel each other and different poles attract each other . If the object had been a magnet then it would have been attracted to only one of the pole and would have repelled the other . Only magnetic materials attract both the poles .

Ans 6:

Ojas Patil from Vikhe Patil Memorial School Pune, Pune
Class : Class 7
sorry c is correct

Ans 7:

Ojas Patil from Vikhe Patil Memorial School Pune, Pune
Class : Class 7
d

Ans 8:

Pragya Mahajan from BCM Arya Model Sr Sec School, Ludhiana
Class : Class 8
no', the ans. should be d

Ans 9:

khushi Joshi from Svkm , Mumbai
Class : Class 9
Only a magnet can attract a compass needle. A magnetic material cannot attract it. Then why not B?

Ans 10:

Kanak Bhowal from Julien Day School, Kolkata
Class : Class 8
The option should be the correct one as the magnet may not rotate due to opposite poles of the magnets. So , it is not necessary for it to rotate in all conditions. So, I think option B is the appropriate answer.

Ans 11:

Kushal from Chirec, Hyderabad
Class : Class 7

Ans 12:

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Class : Class 8
Ans B should be the correct answer. Magnet may rotate or may not it will depend upon which pole is close to the other magnet

Ans 13:

Puneet Arora from ,
Class : Class 5
Option B is the answer, because if magnet is brought close to the compass, the needle points towards the magnet.

Ans 14:

Rabhya Agarwal from Amity noida, Delhi
Class : Class 7
c is the correct answer as it only shows repulsion property of magnets

Ans 15:

JUGAAJYOTI DASH from Doon International School, Bhubaneswar
Class : Class 9
The option C indicates repulsion.

Ans 16:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 7
both option b and c are the correct options as a magnet repels the needle of the compass if the pole of the magnet is a like pole. If the magnet turns around to stick to the another magnet then it means that it turns so that unlike poles face each other and the mgnets stick to each other

Ans 17:

student from school, city
Class : Class 8
The answer is C as it is the only option that somehow results in repulsion while others don't.

Ans 18:

niuv from meridian, Hyderabad
Class : Class 6
B is the correct answer

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suryam from udgam school for children, Ahmedabad
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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Bhavya Sheth from Bright Day School, Vadodara
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Yes, it is.

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Aarya Gupta from Seedling Modern Public School, Udaipur
Subject :NSO    Class : Class 3

Ans 1:

Arrunabh from Delhi public school, Indore
Class : Class 3

Ans 2:

YASH KUMAR from St.Joseph, Shaktinagar
Class : Class 3
shadow Q in picture is not right.it is near to noon.so shadow should be smaller.

Ans 3:

Daksh from RKC, Rajkot
Class : Class 7
Hey Sonia, Shadow P will be formed in the morning and not R.Shadow will be formed in the opposite direction of Sun.

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Arnav from DRDO KV School, banaglore
Subject :NSO    Class : Class 4

Ans 1:

Prisha from Podar International School Thane, Thane
Class : Class 5
OPTION C IS THE FOOT OF A HEN.

Ans 2:

A Andriya from Lalaji Memorial Omega International School, Chennai
Class : Class 8
obviously option C

Ans 3:

Soham Popat from Doon Public School, Bhuj
Class : Class 5
option c

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rchanakamra from chs,dhuri, dhuri
Subject :NSO    Class : Class 8

Ans 1:

lakshay gupta from DPS, New Delhi
Class : Class 9
it should be A

Ans 2:

SUBRATA MUKHERJEE from ,
Class : Class 7
I guess b since H2 can be obtained

Ans 3:

Anjisnu Raha from SBOA School and Junior College, Chennai
Class : Class 9
correct answer (A). natural gas is a clean fuel.

Ans 4:

PRRETI CHAUDHURY from KENDRIYA VIDYALAY NO.1 BNUBANESWAR, BHUBANESWAR
Class : Class 9
A

Ans 5:

mohsin khan from oasis english school, Parbhani
Class : Class 8
D

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rchanakamra from chs,dhuri, dhuri
Subject :NSO    Class : Class 8

Ans 1:

lakshay gupta from DPS, New Delhi
Class : Class 9

Ans 2:

Anjisnu Raha from SBOA School and Junior College, Chennai
Class : Class 9
black vessel will radiate more heat and cannot retain heat of water. so answer, is (B)

Ans 3:

lakshay gupta from DPS, New Delhi
Class : Class 9
we know that black absorbs heat but it also radiates heat

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rchanakamra from chs,dhuri, dhuri
Subject :NSO    Class : Class 8

Ans 1:

Apoorva106 from Little Angels Sr. Sec. School, Sonepat
Class : Class 8
harry's fastest lap time is 25.3 s the question says if he maintains his average speed of his FASTEST lap time if he completes his fastest lap in 25.3 s, he would complete 100 laps in 25.3 * 100 = approx. 2529 seconds

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Joy Poddar from ,
Subject :NSO    Class : Class 7

Ans 1:

from , Kolkata
Class : Class 9
The animals in both option c and d do not have common mode of feeding.

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