Question

1. What effects can heat transfer have on H₂O, if no chemical reactions occur?

	a) At 0°C, the temperature of the water in an ice-water mix may increase, or the temperature of the ice in the ice-water mix may decrease.
	b) Either the temperature of the water will change or the phase will change, but not both at the same time.
	c) At 0°C, ice will expand as it turns into liquid water.
	d) None of the above.

2. Which of the following gives a mathematical definition of specific heat?

mAT d) Ly-79.6 cal/,

3. What is the temperature of an ice-water mixture, and under what condition will the temperature begin to rise?

a	0°C, and the temperature will stay constant.
b	20°C, and the temperature will stay constant.
c	0°C, and the temperature will rise as soon as the heat is applied
d	0°C, and the temperature will rise when 90% of the ice is melted.
e	0°C, and the temperature will only rise when all the ice is melted.

4. If 100 gm of water at 20°C is mixed with 100 gm of water at 70°C in an insulated container, what will be the final temperature of the mixture? (specific heat for aluminium is 0.215 cal/g°C and for water 1.00 cal/g°C latent heat of fusion for water 79.6 cal/g)

a	25°C
b	35°C
c	45°C
d	55°C
e	65°C

5.

Which of the following conditions on a thermally isolated system is essential for predicting the equilibrium temperature?

Answer 1

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