When a neutral atom is converted into a cation, there is
When a neutral atom is converted into a cation, there is Options (a) decrease in the atomic number (b) an…
7 years ago
Chemistry
What is the weight of oxygen required for the complete combusion of 2.8 kg of ethylene?
What is the weight of oxygen required for the complete combusion of 2.8 kg of ethylene? Options (a) 2.8 kg…
7 years ago
The first ionization potentials (eV) of Be and B respectively are
The first ionization potentials (eV) of Be and B respectively are Options (a) 8.29, 9.32 (b) 9.32, 9.32 (c) 8.29,…
7 years ago
Which has the maximum number of molecules among the following
Which has the maximum number of molecules among the following Options (a) 44 g CO₂ (b) 48 g O₃ (c)…
7 years ago
A sample of CaCO₃ is 50% pure. On heating 1.12 L of CO₂ at STP is obtained
A sample of CaCO₃ is 50% pure. On heating 1.12 L of CO₂ at STP is obtained. Residue left(assuming non…
7 years ago
A mixture contains O₂ and N₂ in the ratio of 1 : 4 by the weight
A mixture contains O₂ and N₂ in the ratio of 1 : 4 by the weight. The ratio of their…
7 years ago
If the energy of a photon is given as : =3.03 × 10⁻¹⁹J then, the wavelength (λ)
If the energy of a photon is given as : =3.03 × 10⁻¹⁹J then, the wavelength (λ) of the photon…
7 years ago
The de-Broglie wavelength associated with a ball of mass 1kg having kinetic energy
The de-Broglie wavelength associated with a ball of mass 1kg having kinetic energy 0.5 J is Options (a) 6.626 x…
7 years ago
The momentum of a particle having a de Broglie wavelength of 10⁻¹⁷metres is
The momentum of a particle having a de Broglie wavelength of 10⁻¹⁷metres is (Given h= 6.625 × 10⁻³⁴Js) Options (a)…
7 years ago
Ratio of Cᵥ and Cᵥ of the gas X is 1.4. The number of atoms of the gas X present
Ratio of Cᵥ and Cᵥ of the gas X is 1.4. The number of atoms of the gas X present…
7 years ago