A. 6.023 × 1023 molecules/kg.mole
B. 6.023 × 1023 molecules/gm.mole
C. 6.023 × 1016 molecules/kg.mole
D. 6.023 × 1026 molecules/gm.mole
Related Mcqs:
- Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the ‘corresponding states’. At equal reduced conditions i.e., at the corresponding state, the ____________ of different gases are nearly the same?
A. Compressibility
B. Molecular weight
C. Humidity
D. None of these - Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to__________________?
A. Thermal spalling
B. Slag attack
C. Fusion under load
D. CO attack - The evaporation of aqueous solution of sugar causes its molarity to__________________?
A. Decrease
B. Increase
C. Remain unchanged
D. Either A. or B.; depends on the concentration of the solution - N.T.P. corresponds to__________________?
A. 1 atm absolute pressure & 0°C
B. 760 mm Hg gauge pressure & 0°C
C. 760 torr & 15°C
D. 101.325 KPa gauge pressure & 0°C - For a neutral solution (pH = 7), the value of [H+] [OH-] is equal to_________________?
A. 0
B. 1
C. 1 - “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 - Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?
A. 46
B. 92
C. -23
D. -92 - 1 Pascal (unit of pressure) is equal to _______________ N/m2 ?
A. 10
B. 1
C. 0.1
D. 1000 - What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?
A. 2/3
B. 1/3
C. 1/2
D. 1/3 × (298/273) - The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?
A. Potential energy
B. Intermolecular forces
C. Kinetic energy
D. Total energy
