Volume occupied by one molecule of water (density= 1 g cm⁻³) is
Volume occupied by one molecule of water (density= 1 g cm⁻³) is Options (a) 9 x 10⁻²³ cm³ (b) 6.023…
7 years ago
Easy
³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5
³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5 then ratio of these two isotopes…
7 years ago
The ratio of the difference in energy between first and second Bohr orbit
The ratio of the difference in energy between first and second Bohr orbit to that between the second and the…
7 years ago
The wavelength correspending to maximum enregy for hydrogen is 91.2 nm
The wavelength correspending to maximum enregy for hydrogen is 91.2 nm. The corresponding wavelength for He⁺ ion is Options (a)…
7 years ago
According to Bohr’s theory, the angular momentum of electron in 5th orbit is
According to Bohr's theory, the angular momentum of electron in 5th orbit is Options (a) 25 h/π (b) 1.0 h/π…
7 years ago
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride ions (N³⁻) is Options (a) 2.4…
7 years ago
2.76 g of silver carbonate on being strongly heated yield a residue weighing
2.76 g of silver carbonate on being strongly heated yield a residue weighing Options (a) 2.16 g (b) 2.48 g…
7 years ago
Which has maximum number of molecules
Which has maximum number of molecules Options (a) 7 gm N₂ (b) 2 gm H₂ (c) 16 gm NO₂ (d)…
7 years ago
Which of the following electronic configuration an atom has the lowest ionisation
Which of the following electronic configuration an atom has the lowest ionisation enthalpy? Options (a) 1s²2s²sp³ (b) 1s²2s²2p⁵3s¹ (c) 1s²2s²2p⁶…
7 years ago
A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres
A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres, the normality of…
7 years ago