If heat is supplied to water continuously, the temperature of water …………………
A) increases continuously
B) decreases
C) increases continuously till it reaches 100° C
D) can’t say
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What happens when heat is supplied to a solid at its melting point?
1. When heat is supplied to a solid at its melting point, average kinetic energy of constituent particles does not change. 2. As a result, temperature of body remains constant. 3. Supplied energy...
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What happens when heat is supplied to liquid its freezing point (melting point)?
1. On heating, the atoms/molecules in liquid gain kinetic energy and temperature of the liquid increases. 2. If liquid is continued to heat further, at the boiling point, the constituents overcome...
2 Answers 2 views
Explain how behaviour of water is different than solids and liquids when heat is supplied.
1. Normally solids and liquids expand on heating. Hence their volume increases on heating. 2. Since the mass is constant, it results in a decrease in the density on heating. 3. Water...
2 Answers 1 views
‘ Same amount of heat is supplied to two liquids A and B. The liquid B shows greater rise in temperature
A) Specific heat of B is less than that of A
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If the specific heat is low, the rate of rise or fall in temperature is ………………. for the same quantity of heat supplied.
Correct option is B) more
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The final temperature of a mixture of 100g of water at 30°C temperature and 100g of water at 60°C temperature is ………………………
Correct option is A) 45° C
2 Answers 2 views
Calculate the amount of heat energy to be supplied to convert 2 kg of ice at 0 °C completely into water at 0 °C if latent heat of fusion
Mass (m) = 2 kg = 2 × 103 g. latent heat of fusion for ice (L) = 80 cal/g. To find: Heat energy (Q) Formula: Q = mL From formula, Q = 2 × 103 ×...
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The latent heat of vapourization of liquid of “m”gm when the heat energy of “Q” calories is supplied to change its state from liquid to gas is ………………
Q = mL so, L = Q/m. Hence, the correct option is (B) Q/m
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The latent heat of vapourization of liquid of “m”gm when the heat energy of “Q” calories is supplied to change its state from liquid to gas is ………………
2 Answers
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Take some ice cubes in a beaker. Insert a thermometer. Heat the beaker continuously upto changed into water. The reading in thermometer
D) Increases then remains constant
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