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Smita De from Bishop Cotton Girls School, BANGALORE
Subject :NSO    Class : Class 5

Which of the following appliances work by converting electrical energy into heat energy and are used to keep our surroundings warm?


AP and Q only
BQ only
CP, Q, R and S
DS only


Ans 1:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

Ans 2:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7
It will be option D. It will be D as it can be understood from the pictures that S is a room heater which is run by electric. Heat comes out of it. It is therefore used to keep our surroundings warm. Thank you .

Ans 3:

Divyanshi from United international School, Bangalore
Class : Class 6
but others also produce heat energy?

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