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Shivangi from St. Michael's High School, Patna
Subject :NSO    Class : Class 5

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 7
It should be option C. It should be discouraged.

Ans 2:

sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
Class : Class 5
D

Ans 3:

sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
Class : Class 5
D

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Basumita Banerjee from The BSS School , Kolkata
Subject :NSO    Class : Class 4

Ans 1:

neha garg from Lancer convent school, new Delhi
Class : Class 4
B

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Anvesh from navy Children school, mumbai
Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

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

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Soham De from DPS, Nerul, Mumbai
Subject :NSO    Class : Class 5

Ans 1:

ayush from , Dhanbad
Class : Class 7
B

Ans 2:

Arnav kaul from Chirec, Hyderabad
Class : Class 5

Ans 3:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 7
The answer should be opt.B

Ans 4:

Sumit Singhal from Cambridge Court World School, JAIPUR
Class : Class 5
as if we will contract metal x so it is not neccessery that y will contract if we contract metal y x has to be conyracted with it ans should be a

Ans 5:

arya navare from Saint ursula school, kankavli
Class : Class 5

Ans 6:

from , Bengaluru
Class : Class 6
All metal expands on heating. Here metal Y expands more which leads to curling of both X and Y. B is the correct option.

Ans 7:

Arav Singh from Jyoti Niketan School, Azamgarh
Class : Class 5
b

Ans 8:

Shivangi from St. Michael's High School, Patna
Class : Class 5
C is the correct answer

Ans 9:

Srishti Rani from DBMS ENGLISH SCHOOL, Jamshedpur
Class : Class 5
cONFUSED IN d AND B

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Kshitij Gupta from St Kabir din, Ahmedabad
Subject :NSO    Class : Class 8

The diagram shows a beaker containing a solution of zinc sulphate and two carbon electrodes. A battery is placed next to it. In order that the electrode P be plated with zinc,


A P must be connected to S and Q to R
B P must be connected to Q and S to R
C P must be connected to R and Q to S
D P and Q must be connected to R.


The answer would be a as znso4 wold breakdown into zn 2and so42-ions .the zn 2 would be attracted towards cathode(negative terminal) so p would be attached to negative terminal and therefore the answer is a.

Ans 1:

tamojit das from techno India Group Public School , Chinsura
Class : Class 8
cation(Zn2 ) must be deposited to the cathode.

Ans 2:

Raghav Tyagi from birla vidya niketan, new delhi
Class : Class 9
thus answer is a

Ans 3:

Tanush from Presidency, Bangalore
Class : Class 3
And for this question must be A

Ans 4:

Raghav Tyagi from birla vidya niketan, new delhi
Class : Class 9
In reactivity series hydrogen is below zinc and is less reactive than zinc. As hydrogen below zinc therefore will reduce more and earlier than zinc , hence will go to cathode and zinc will reduced or deposit at anode. therefore P will be connected to R and Q to S.hence ans is :C

Ans 5:

Abhay Agarwal from St Francis School, Ghaziabad
Class : Class 8
answer A

Ans 6:

Abhay Agarwal from St Francis School, Ghaziabad
Class : Class 8

Ans 7:

Sounak halder from Kendriya Vidyalaya Cossipore, kolkata
Class : Class 8
the answer will be 'A'

Ans 8:

Dhars from DPS EAST Bangalore , Bengaluru
Class : Class 8
the answer is wrong.....it should be a

Ans 9:

Raghav Tyagi from birla vidya niketan, new delhi
Class : Class 9
my apologies for the previous explanation answer is : C

Ans 10:

Riya Singhani from BVB vidhyashram, jaipur
Class : Class 8
WWWWRRRROOOONNNNNNNNNNGGGGGGGGGGGGGGGGG

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H KRITHIK from kendriya vidyalaya, chennai
Subject :NSO    Class : Class 3

A note is shown here which Ravi has made about different types of house. Unfortunately when he had finished writing, some ink spilt over the page and covered some of the key words.
A wooden house made on a boat is called . It is common in Kashmir and . In areas with heavy rainfall houses are common. are built of snow and are found in very cold countries.
Select the correct sequence of hidden words to complete the note.

A Caravan, Rajasthan, Tent, Igloos
B Houseboat, Kerala, Stilt, Igloos
C Houseboat, Delhi, Kutcha, Igloos
D Tent, Karnataka, Caravan, Igloos

Ans 1:

Varsha from Nps banashankari Bangalore, Bangalore
Class : Class 3
B

Ans 2:

Dishen dharmenra patel from Anand niketan to the satellite , Ahmedabad
Class : Class 3

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from , Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Medha Bhutani from Christ Academy, Bengaluru
Class : Class 7
ans is c

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from , Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Sriyansh from Surabhi , Hosapete
Class : Class 8
Plug key is also a type of switch.

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Raghav Mittal from DAV Public School, ludhiana
Subject :NSO    Class : Class 5

Ans 1:

Gauri Singh from St. John's School, Marhauli, Varanasi
Class : Class 5
Yes, but in the given figure it is sedimentation

Ans 2:

ARNAV GARG from PRESIDIUM SCHOOL, New Delhi
Class : Class 6
c

Ans 3:

Mallika Gupta from NPS Koramangala, Bangalore
Class : Class 7
it needs to be sedimentation and decantation because the insoluble material present in the liquid is quite heavy you only perform filtration when the particles float over the surface of the water

Ans 4:

Shivangi from St. Michael's High School, Patna
Class : Class 5
Ya, filtration can also remove insoluble impurities but in this case sedimentation and decanation is more appropriate answer.

Ans 5:

A Andriya from Lalaji Memorial Omega International School, Chennai
Class : Class 7
sedimentation and decantation is the answer . but filtration can not come because we can see in the picture itself that the particles are big ,that's why sedimentation and decantation . if the particles are small but yet insoluble , then only it is filtration . I hope that you understood.

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from , Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Medha Bhutani from Christ Academy, Bengaluru
Class : Class 7
every single sound has its own secondary waves, so the correct option must be option C.

Ans 2:

RAHUL S ROY from ST.XAVIERS HIGH SCHOOL,VAPI, VAPI,GUJARAT
Class : Class 7
correct option is c

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