Class X - Heat(Specific Heat)

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Source: Shri P. Ravi Kishore, M.Sc. B.Ed. PGT (Science)

How much heat is released when 100 g of iron cools from 550 C to 150 C? (specific heat of Iron = 0.44 J/g.C)?

1 point

17600 J

17100 J

17000 J

18000 J

Clear selection

A 33 g block of glass (specific heat = 0.50 J/g C) absorbs 333 joules of heat energy. How much does the temperature of the glass rise? (round off to nearest integer)

1 point

19 C

20 C

22 C

21 C

Clear selection

An Aluminum Can with a mass of 20 grams (specific heat =0.90 J/g C) absorbs 280 Joules of heat. How much does the temperature rise?

1 point

288.6 K

289.6 K

15.6 C

16.6 C

Clear selection

Which one is better conductor of heat among the Silver(s=0.24 J/g.C) and Mercury(s = 0.14 J/g.C)

1 point

silver

Mercury

Clear selection

How much heat is absorbed when 50 g of copper, s = 0.385 J/g C , goes from 20.0⁰C to 35.0⁰C?

1 point

290 J

291 J

289 J

287 J

Clear selection

A tin can with a mass of 200 grams (specific heat =0.21 J/g C) rises its temperature from 50 C to 80 C. How much heat it should absorb?

1 point

1300 J

1200 J

12.6 kJ

12 kJ

Clear selection

Which one is better conductor of heat among the Gold (s=0.129 J/g.C) and tin (s = 0.21 J/g.C)

1 point

Gold

tin

Clear selection

convert 200 cal to Joules?

1 point

837 J

837 kJ

200 J

200 kJ

Clear selection

Which of the following formula to be used for calculating heat required for 20 g of water to increase the heat from 20C to 30C

1 point

S = Q m dT

m = Q s dT

Q = m s dT

dT = Q m s

Clear selection

Water melon brought out from the refrigerator retains its coolness for a longer time than any other fruit because

1 point

The layer is thick

It contains a large percentage of water

The fruit absorbs more coolness.

It contains more seeds

Clear selection

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