డిఎస్సి / టెట్ పరీక్షల శ్రేణి -7

Pick out the correct one from the following ?
a. Density of Water > Density of ice
b. Density of Water < Density of ice c. Density of Water = Density of ice d. A or B

The factors that effect the process of evaporation are
a. Surface area
b. Temperature
c. Amount of vapour already present in air
d. All

Net heat lost=Net heat gain
It is the principle of method of
a. Temperature
b. Heat
c. Materials
d. Mixtures

What is the reason for hotness of samosa inside and coldness outside
a. Low specific heat
b. High specific heat
c. Outside layer has high specific heat
d. We can’t tell

The water droplets condensed on surface is known as
a. Humidity
b. Dew
c. Moisture
d. All

What is the measure of thermal equilibrium ?
a. Dew
b. Humidity
c. Temperature
d. None

The rise in temperature depends on the
a. Shape of the material
b. Structure of the material
c. Nature of the material
d. Quantity of the material

What does ‘S’ stands for in the equation Q=mS delta T
a. Specific heat
b. Specific temperature
c. Difference in temperature
d. None

Latent heat of vapourization units in S.I are
a. cal/g
b. J/kg
c. j/cal
d. None

Latent heat of fusion units in S.I are
a. J/kg
b. cal/g
c. J/cal
d. g/J

The total energy of the system is also termed as
a. Internal energy of system
b. External energy of system
c. No mentioned
d. Potential energy

Iron of weight 2 kg was supplied with 12000 calories of heat. Initial temperature of iron was 20 degree C. Its specific heat is 0.1 cal/g-degree C. What is the final temperature of iron ?
a. 80 degree c
b. 90 degree c
c. 100 degree c
d. 220 degree c

1 cal=
a. 6.18 J
b. 4.18 J
c. 4.28 J
d. 5.18 J

The factors that effect the process of evaporation are
a. Surface area
b. Temperature
c. Amount of vapour already present in air
d. All

The required heat energy to improve the temperature of 8 grams of ice forms -10 degree C to -5 degree C is
a. 20 cal
b. 40 cal
c. 80 cal
d. 120 cal

We can say that the following is surface phenomenon and also cooling process.what is that?
a. Condensation
b. Evaporation
c. Humidity
d. Melting

Why does water on floor disappear after some time
a. Due to evaporation of molecules
b. Due to condensation of molecules
c. Due to melting of molecules
d. None

Which of the following substance has light specific heat ?
a. Iron
b. Kerosene oil
c. Ice
d. Water

Reverse process of condensation is
a. Freezing
b. Melting
c. Evaporation
d. None

When we keep materials in fridge it becomes cool due to,
a. Gain heat energy
b. Lose cold energy
c. Lose heat energy
d. Gain cold energy