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Vikram from AVM, Mumbai
Subject :NSO    Class : Class 3

Ans 1:

Admin from Revisewise, Noida
Class : Class 3
The group listing items that can replace R is Option B. The marking P Q R above the options is an error which we regret and will correct as soon as possible. Thanks for bringing it to our notice.

Ans 2:

Jeronee from Christwood School, PERUMBAKKAM
Class : Class 5
The question is which can replace R. according to the flow chart /r doesn't have definite shape nor volume. So it should be a gas or vapour. the option B has all the items in the form of gas, oxygen, hydrogen and watervapour and is the right answer.

Ans 3:

Vikram from AVM, Mumbai
Class : Class 5
Thanks for the reply and for rectifying the error

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Ashwin Shridhar from VSA, Bengaluru
Subject :NSO    Class : Class 5

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kunal from Av vidya mandir school , cheeka
Subject :NSO    Class : Class 7

Ans 1:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
I have 3 badges but don't know which ones.

Ans 2:

RiptideMel from Modern Vidya Niketan Senior Secondary School Sec 17, Faridabad
Class : Class 10
I have 16 badges, but don't know what they are!

Ans 3:

Aniket kumar from kendriya vidyalaya, Delhi
Class : Class 8
please tell me too

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Ashwin Shridhar from VSA, Bengaluru
Subject :NSO    Class : Class 5

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ABHIJEET TIKKHA from APEEJAY SCHOOL NOIDA, Noida
Subject :NSO    Class : Class 8

Ans 1:

Saanvi Puri from Venkateshwar international school, New delhi
Class : Class 8
It should be b

Ans 2:

SUBRATA MUKHERJEE from ,
Class : Class 7
Answer should be b

Ans 3:

Dr Anupa Ghosh from ,
Class : Class 8
The correct option is B.Because curd is acidic and the indicator should have changed to dark pink color.

Ans 4:

Siya sharma from Mayoor , Noida
Class : Class 8
B is correct antacids are basic since they are made for curing stomah acidity so it will turn the indicator to green.

Ans 5:

RiptideMel from Modern Vidya Niketan Senior Secondary School Sec 17, Faridabad
Class : Class 10
Any link with Lopamudra Raut? :-)

Ans 6:

Mohak Khetan from Podar International School Powai , Mumbai
Class : Class 8
I think the answer which they told is wrong. The ans should be B.

Ans 7:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
yes answer should be B

Ans 8:

lakshay gupta from DPS, New Delhi
Class : Class 9
it should be B as antacids are basic, and they will turn china rose to green

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ravi agarwal from sainik school , Bijapur
Subject :NSO    Class : Class 8

Ans 1:

arnav from the gurukul, Panchkula
Class : Class 5

Ans 2: (Master Answer)

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

Ans 3:

Arsh Sharma from Bhavan Vidyalaya, Panchkula
Class : Class 8
X can be the harmful and toxic wastes.so as they are released and again gain concentration,the quantity of aquatic animals decrease.Otherwise it was on an increase as the pollution was discharged.

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ravi agarwal from sainik school , Bijapur
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

Ans 2:

arnav from the gurukul, Panchkula
Class : Class 5

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ravi agarwal from sainik school , Bijapur
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

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Phani Kumar from Lexicon School, Pune
Subject :NSO    Class : Class 6

Ans 1:

Sunil Menon from ,
Class : Class 6
Option A.

Ans 2:

GAURAB DASH from St Mary's convent school, Baripada
Class : Class 6

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Nirali Rashesh Desai from ,
Subject :NSO    Class : Class 4

Ans 1:

ABHAY AGARWAL from ,
Class : Class 3
answer shd be k

Ans 2:

PRANSHU AGRAWAL from The Jain International School, Bilaspur
Class : Class 6
The answer is Bbecause A is a Maharashtrian , C is gujurati , D is bengali and B is punjabi which does not live near coastal areas

Ans 3:

Aarush from Podar, Mumbai
Class : Class 10
b

Ans 4:

AARUSH from DPS, Mumbai
Class : Class 4
Yes it is B

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