Heat Full Chapter Revision and Quiz | Grade 7 | CHAMPS 2024 | BYJU'S

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[byjus-class-]

Hey Everyone, Learn everything about RADIATION with this session:



Happy learning :)

[Xbothuman]

sir homework answer is b because it stops heat from rising and escaping
first
sir thanks for this wonderful quiz

[BarnakKhanStudy]

h.w. answer is (D.) CONDUCTION. As, the lid stops hot air from rising, hence minimizing the loss of heat due to convection.

[pritipandeyth]

Sir option B convection is right😊 your session is best my all doubt is clear 😊

[ranjanasharma]

Pls give us more assertion and reason question

[VivekSuyal]

Sir I have seen the answer that is B 😅😅😅😅😅 but why it can prevent heat loss from convection only why don't it can prevent from all these???three methods ????

[poorvi]

Doubt why their are different scales to measure temperature?

[mayazarkar]

Correct option D All of the above. The wall of casserole are made up of heat insulating material to prevent it from Conduction. The puff layer between the inner and outer pots prevent the heat transfer from Convection, and Radiation is prevented by the mirrored finish given by the inner walls.

[vanshikasharmafromgradeth]

hi sir, i am vanshika. remember-i was in the virtual quiz of science riddles.
h.w ans.-b.convection because we know that hot air rises up but because of the insulating lid, it would get prevented.
thank you

[DS_ArtCraft]

I have an doubt from ch time and motion so please help me with this question a car moves with a speed of 60 km /hr for 20min and then with a speed of 60/km/hr for next 15 min .what is the total distance cover by the car..


Please i will be glad ....help me with this question

[peehukhanna]

Sir please explain that lid question the last one

[AnushkaJangde-hwyx]

Hmw questioj answer= B because The cassarole's lid Is made up of glass Mainly which is an insulator And won't late the heat Escape 💕💕Awesome session Thanks for the Session sir ❤❤~ Anushka class 7❤

[rekhamatiyani]

Sir please make a video of test in the test motion and heat sir please fast because our test is in 16 agust

[poorvi-mzwt]

😢Worst experience ever i had continuously ignoring i have doubt and i am asking but he ignored. Ignoring at another level why ?so angry and sad with byjus i want know the reason 😢feedback from poorvi

[kusumkaliAthiya]

Because the air is blocked in two blankets

[shrivalisharma]

Sir it was an amazing session! Just a doubt I have and hope you can clear it-

why do molocules in insulators dont shake when heat is given (Conduction)? sir plz explain