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Sabhya Kumar from Suncity School, Gurgaon
Subject :NSO    Class : Class 7

A block of wood is floating on water at 0°C, with a certain volume V above water level. The temperature of water is slowly raised from 0°C. How will the volume V change with rise of temperature?

AV will not change.
BV will always increase.
CV will decrease till 4°C and then increase.
DV will increase till 4°C and then decrease.


Ans 1:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
D

Ans 2:

from rbk, mumbai
Class : Class 7
answer should be C

Ans 3:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9

Ans 4:

Dhruva from VSSIPS, Bangalore
Class : Class 7
Answer has to be C bcoz density increases till 4 degrees and then decreases.Hence the volume has to be the opposite of what is mentioned above.The volume will first decrease and then increase

Ans 5:

Dhruva from VSSIPS, Bangalore
Class : Class 7
Answer has to be C

Ans 6:

Sainyam Sharma from Thakur Public School, Mumbai
Class : Class 7
Answer Is C

Ans 7:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
Answer should be C

Ans 8:

Arjun from Sri Kumaran Public School - ICSE, Bengaluru
Class : Class 8
The answer must be C due to the anomalous expansion of water until 4 Degrees Celsius.

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