The de-Broglie wavelength associated with a ball of mass 1kg having kinetic energy 0.5 J is
Options
(a) 6.626 x 10⁻³⁴ m (b) 13.20 x 10⁻³⁴ m (c) 10.38 x 10⁻²¹ m (d) […]
The momentum of a particle having a de Broglie wavelength of 10⁻¹⁷metres is (Given h= 6.625 × 10⁻³⁴Js)
Options
(a) 3.3125 x 10⁻⁷kg ms⁻¹ (b) 26.5 x 10⁻⁷kg ms⁻¹ (c) 6.625 x 10⁻¹⁷kg […]
Ratio of Cᵥ and Cᵥ of the gas X is 1.4. The number of atoms of the gas X present in 11.2 litres of it at NTP will be
Options
(a) 6.02 x […]
Gram molecular volume of oxygen at STP is
Options
(a) 3200 cm³ (b) 5600 cm³ (c) 22400 cm³ (d) 11200 cm³
Correct Answer:
5600 cm³
Explanation:
Gram molecular volume of oxygen at STP […]
If ionization potential for hydrogen atom is 13.6eV, then ionization potential for He⁺ will be
Options
(a) 54.4 eV (b) 6.8 eV (c) 13.6 eV (d) 24.5 eV
Correct Answer:
54.4 eV
Explanation: […]
The correct set of four quantum numbers for the valence electron of rubidium atom(Z=37) is
Options
(a) 5,1,1,+½ (b) 6,0,0,+½ (c) 5,0,0,+½ (d) 5,1,0,+½
Correct Answer:
5,0,0,+½
Explanation:
₃₇Rb=₃₆[Kr] 5s Its valence electron […]
If 30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end of the reaction?
Options
(a) 10 mL of H₂ (b) 5 mL of […]
The number of gram molecules of oxygen in 6.02 x 10²⁴ CO molecules is
Options
(a) 10 gm molecules (b) 5 gm molecules (c) 1 gm molecules (d) 0.5 gm molecules
Correct Answer: […]
The order of filling of electrons inthe orbitals of an atom will be
Options
(a) 3d, 4s, 4p, 4d, 5s (b) 4s, 3d, 4p, 5s, 4d (c) 5s, 4p, 3d, 4d, 5s (d) […]
The maximum number of electrons in a subshell is given by the expression
Options
(a) 4l– 2 (b) 4l+ 2 (c) 2l+ 2 (d) 2n²
Correct Answer:
4l+2
Explanation:
No. of orbitals in […]
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