The density of a gas at N.T.P.is ‘ρ’. Keeg the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become ¾ 0.75 ρ at a temperature of ____________ °K?
A. 273°
B. 300°
C. 400°
D. 373°
Stoichiometry
A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?
A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?
A. Xc > Xs
B. Xc = Xs
C. Xc < Xs
D. Xc greater/less than Xs depending on the length of the cylinder
The temperature at which a real gas obeys Boyle’s law is termed as the__________________?
The temperature at which a real gas obeys Boyle’s law is termed as the__________________?
A. Triple point
B. Boyle’s temperature
C. Eutectic point
D. Inversion temperature
Recycling in a chemical process facilitates___________________?
Recycling in a chemical process facilitates___________________?
A. Increased yield
B. Enrichment of product
C. Heat conservation
D. All A., B. & C.
Internal energy is independent of the ____________ for an ideal gas?
Internal energy is independent of the ____________ for an ideal gas?
A. Pressure
B. Volume
C. Both A. & B.
D. Neither A. nor B.
“The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes”. This is the _____________ law?
“The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes”. This is the _____________ law?
A. Dalton’s
B. Amagat’s
C. Gay-Lussac’s
D. Avogadro’s
Which of the following gravity scales is used exclusively for liquids heavier than water ?
Which of the following gravity scales is used exclusively for liquids heavier than water ?
A. Baume scale
B. Twaddell scale
C. API scale
D. None of these
1m3 is approximately equal to_________________?
1m3 is approximately equal to_________________?
A. 28 litres
B. 35 ft3
C. 4.5 litres
D. 4.5 ft3
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is__________________?
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is__________________?
A. Independent of the temperature
B. Increased with the increase in pressure
C. Decreased with the increase in pressure
D. Unchanged by the pressure change
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation_________________?
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation_________________?
A. Increases with pressure rise
B. Decreases with increasing pressure
C. Becomes zero at the critical point
D. Both B. & C.