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Preetha Joshi from ,
Subject :NSO    Class : Class 8

Read the statements given below and choose the correct option.
Statement 1 :Thermosetting plastics which when moulded once, cannot be softened by heating.
Statement 2 : PVC is a thermosetting plastic.

ABoth statements are correct and statement 2 is correct explanation of statement 1.
BBoth statements are correct but statement 2 is not a correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements are incorrect.


What plastic is PVC?

Ans 1:

Dr Anupa Ghosh from ,
Class : Class 8
PVC is actually a very hard type of plastic which is used to make pipes,water bottles,etc.

Ans 2:

Bhavya Sheth from Bright Day School, Vadodara
Class : Class 5
PVC is a thermoplastic

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Debarshee Rakshit from DPS Megacity, Kolkata
Subject :NSO    Class : Class 5

Ans 1:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
tough question

Ans 2:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 6

Ans 3:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
d

Ans 4:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 8
B

Ans 5:

Indranuj from Ryan International, Mumbai
Class : Class 9
Salt water

Ans 6:

Abhimanyu from Indira National School , Pune
Class : Class 5
when salt is added to water its density increases greatly.therefore it is very tough to push the plunger.

Ans 7:

RIDHASEN PRIYASEN SHAH from The Rajkumar College, Rajkot, Rajkot
Class : Class 4

Ans 8:

Praveena from Sri Sankara Senior Secondary, Chennai
Class : Class 5
Salt water

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Jaytra lohia from Lvis - noida, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

Ans 2:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

Ans 3:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

Ans 4:

Mainak Mitra from Air force school chabua, Dibrugarh
Class : Class 4

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Jaytra lohia from Lvis - noida, Ghaziabad
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

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

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SAKSHAM GARG from bal bharti public school pitampura, New Delhi
Subject :NSO    Class : Class 2

Ans 1:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 7
Photosynthesis is the process by which plants and some protistans use the energy of the Sun to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight is associated with a green pigment called chlorophyll. Julius Von Sachs(1832-1897) , a German botanist and physiologist initiated experimental plant physiology to study in the effects of light and heat on plants and how plants get their food. In 1854, Sachs showed that plants produce sugar with the help of a green pigment called chlorophyll. Sachs also showed that chlorophyll is not spread throughout the plant, instead it is present only on the leaves. Which is why leaves are green in color.

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Vikash kumar Singh from ,
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
The festival of lights is Diwali and it falls in the month of October or November. Correct Answer is C. Between Gandhi Jayanti ie. 2nd Oct and Christmas i.e. 25th December

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Celoney Garg from ,
Subject :NSO    Class : Class 5

Read the given statements and select the correct option.
Statement 1: Naphthalene balls kept in woollen clothes reduce in size after sometime.
Statement 2: Solid naphthalene balls change into gas due to the warmth of woollen clothes.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.


can somebody explain ,,how warmth comes from stored woollens

Ans 1:

Shambhavi from Ryan international school, New Delhi
Class : Class 6
Option (a)

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Priyanka Ravi from ,
Subject :NSO    Class : Class 5

Ans 1:

Celoney Garg from ,
Class : Class 5
sand does not absorb water and allows water to pass through it .similarly water in 2nd container absorbs water more than 3rd container . same happens in1st and 3rdcontainers

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sayed afeeq from Symga English school, Surat
Subject :NSO    Class : Class 5

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Sharad Jain from Presidium, Ghaziabad
Subject :NSO    Class : Class 5

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