The gas molecules have r.m.s. velocity of its molecules as 1000 m/s. What is its average velocity
Options
(a) 546 m/s (b) 921.58 m/s (c) 1012 m/s (d) 960 m/s
Correct Answer:
921.58 […]
The smell of agarbati, mixed in the atmosphere , is due to
Options
(a) evaporation (b) diffusion (c) osmosis (d) condensation
Correct Answer:
diffusion
Explanation:
Diffusion is the ability of a […]
A liquid is in equilibrium with its vapour at its boiling point.The molecules in the two phases have equal
Options
(a) kinetic energy (b) total energy (c) potential energy (d) intermolecular energy
Correct […]
At 27⁰C average kinetic energy of one mole of helium gas can be given
Options
(a) 3741.30 J mol⁻¹ (b) 374.13 J mol⁻¹ (c) 1662.8 J mol⁻¹ (d) 166.28 J mol⁻¹
Correct Answer: […]
A gas has a vapour density 11.2.The volume occupied by 1 g of gas at NTP is
Options
(a) 1 litre (b) 11.2 litre (c) 22.4 litre (d) unpredictable
Correct Answer:
1 litre
Kinetic energy of one mole of an ideal gas at 300 K is
Options
(a) 3.48 kJ (b) 3.74 kJ (c) 37.4 kJ (d) 34.8 kJ
Correct Answer:
3.74 kJ
Explanation:
Kinetic energy […]
Ortho and para-hydrogen have
Options
(a) identical chemical but different physical properties (b) identical physical and chemical properties (c) identical physical but different chemical properties (d) different physical and chemical properties
Correct Answer: […]
Electronic configuration of hydride ion is
Options
(a) 1s¹ (b) 1s² (c) s¹⁺¹ (d) s²⁺
Correct Answer:
1s²
Explanation:
Hydrogen atom = 1s¹, Hydride ion(H⁻) = 1s².
On reaction with Mg, very dilute nitric acid produces
Options
(a) nitric acid (b) hydrogen (c) NH₃ (d) nitrous oxide
Correct Answer:
hydrogen
Explanation:
On reaction with Mg, very dilute nitric acid produces […]
Water has high boiling point because
Options
(a) it is weak acid (b) it is associate with hydrogen bonding (c) it has more lattice energy (d) it has higher molecular weight
Correct Answer: […]
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