Recent questions in random

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The frequency of light emitted for the transition n = 4 to n = 2 of He+ is equal to the transition in H atom

asked Jul 22, 2022 in random by Doubtly (98.9k points)

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1 answer 123 views

Ionisation energy of He+ is 19.6×10-18J atom-1. The energy of the first stationary state (n = 1) of Li2+ is

asked Jul 22, 2022 in random by Doubtly (98.9k points)

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1 answer 140 views

The energy required to break one mole of Cl–Cl bonds in Cl2 is 242 kJ mol-1. The longest wavelength of light capable

asked Jul 22, 2022 in random by Doubtly (98.9k points)

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1 answer 90 views

The radius of the second Bohr orbit for the hydrogen atom is :

asked Jul 22, 2022 in random by Doubtly (98.9k points)

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1 answer 97 views

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0×103ms-1

asked Jul 22, 2022 in random by Doubtly (98.9k points)

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1 answer 129 views

if the kinetic energy of an electron is increased four times, the wavelength of the de-Broglie wave associated

asked Jul 22, 2022 in random by Doubtly (98.9k points)

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1 answer 128 views

What is disproportionate ? in chemistry

asked Jul 20, 2021 in random by Doubtly (98.9k points)

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1 answer 189 views

Uncertainty in position of a particle of 25 g in space is 10–5 m. Hence, uncertainty in velocity (m s–1) is (Planck’s constant, h = 6.6 × 10–34 Js)

asked May 25, 2021 in random by Doubtly (98.9k points)

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0 answers 154 views

In a hydrogen atom, if the energy of an electron in the ground state is – 13.6 eV, then that in the 2nd excited state is

asked May 25, 2021 in random by Doubtly (98.9k points)

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1 answer 158 views

Which of the following ions has the maximum magnetic moment ?

asked May 25, 2021 in random by Doubtly (98.9k points)

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1 answer 197 views

Energy of H-atom in the ground state is –13.6 eV, hence energy in the second excited state is

asked May 25, 2021 in random by Doubtly (98.9k points)

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1 answer 421 views

Which of the following polymer is used in the manufacture of wool laminates ?

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 152 views

The green house gas/es is (are : (A) Carbon dioxide (B) Oxygen (C) Water vapour (D) Methane

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 485 views

The equivalents of ethylene diamine required to replace the neutral ligands from the coordination

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 809 views

Complete combustion of 750 g of an organic compound provides 420 g of CO2 and 210 g of H2O.

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 375 views

A certain element crystallises in a bcc lattice of unit cell edge, length 27ºÅ. If the same element

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 236 views

The type pollution that gets increased during the day time and in the presence of O3 is :

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 263 views

Which of the following reaction DOES NOT involve Hoffmann bromamide degradation ?

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 852 views

The process that involves the removal of sulphur from the ores is : jee main march 2021

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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1 answer 391 views

Which among the following pairs of Vitamins is stored in our body relatively for longer duration ?

asked Apr 14, 2021 in random by Doubtly (98.9k points)

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