EASY
10th Tamil Nadu Board
IMPORTANT
Earn 100

Explain the experiment of measuring the real and apparent expansion of a liquid with a neat diagram.

Important Questions on Thermal Physics

MEDIUM
10th Tamil Nadu Board
IMPORTANT

Two ideal gas thermometers A and B use oxygen and hydrogen, respectively. The following observations are made:

Temperature

Pressure thermometer A

 Pressure thermometer B

Triple-point of water

1.250×105 Pa

0.200×105 Pa

Normal melting point of sulphur

1.797×105 Pa

0.287×105 Pa


What is the absolute temperature of the normal melting point of sulphur as read by thermometers A and B? What do you think is the reason behind the slight difference in answers of thermometers A and B ? (The thermometers are not faulty). What further procedure is needed in the experiment to reduce the discrepancy between the two readings ?
 

EASY
10th Tamil Nadu Board
IMPORTANT
How much time would it take to distribute one Avogadro number of wheat grains, if 1010 grains are distributed each second ?
EASY
10th Tamil Nadu Board
IMPORTANT
Will the volume of one mole of chlorine gas at STP be the same or different from the volume of one mole of sulphur dioxide gas at STP?
MEDIUM
10th Tamil Nadu Board
IMPORTANT
Calculate the volume occupied by 1.50×1023 molecules of chlorine gas at STP.
HARD
10th Tamil Nadu Board
IMPORTANT
A vessel contains N molecules of chlorine gas at a certain temperature and pressure. How many molecules of sulphur dioxide gas will the vessel contain at the same temperature and pressure?
HARD
10th Tamil Nadu Board
IMPORTANT
A flask X contains 2.0g of oxygen gas at a certain temperature and pressure. Another flask Y contains 2.0g of hydrogen gas at the same temperature and pressure. Which sample contains a greater number of molecules?
EASY
10th Tamil Nadu Board
IMPORTANT

Correct the following statement:

Equal masses of all gases under identical conditions contain the same number of molecules. 

MEDIUM
10th Tamil Nadu Board
IMPORTANT

Correct the following statement:

Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of atoms.