A. 9.03
B. 3.01
C. 1.204
D. 6.02
Related Mcqs:
- 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 - A gaseous mixture contains 14 kg of N2, 16 kg of O2 and 17 kg of NH3. The mole fraction of oxygen is__________________?
A. 0.16
B. 0.33
C. 0.66
D. 0.47 - Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be_________________?
A. 0
B. 1
C. 2
D. 3 - In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________?
A. High temperature
B. Low pressure
C. Low temperature only
D. Both low temperature and high pressure - Atoms of the same element, but of different masses are called__________________?
A. Isobars
B. Isotones
C. Isotopes
D. None of these - Isotopes are atoms having the same _____________________?
A. Mass number
B. Number of neutrons
C. Atomic mass
D. None of these - In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material ?
A. Tin
B. Lead
C. Zinc
D. Glass - There are one octahedral void and ______________ tetrahedral void in the closest packing of atoms ?
A. One
B. Two
C. Three
D. None of these - Neutrons are present in all atoms except that of ___________________?
A. He
B. C
C. H
D. Ar - The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are__________________?
A. 3.01 × 1022
B. 6.02 × 1023
C. 9.03 × 1024
D. 1.20 × 1024
