The smallest among the following ion is
The smallest among the following ion is Options (a) Na⁺ (b) Mg²⁺ (c) Ba²⁺ (d) Al³⁺ Correct Answer: Al³⁺Explanation:The size…
7 years ago
Memory
The stability of +1 oxidation state increases in the sequence:
The stability of +1 oxidation state increases in the sequence: Options (a) Tl < In < Ga < Al (b)…
7 years ago
Be resembles much with
Be resembles much with Options (a) Li (b) Al (c) Zn (d) Ra Correct Answer: AlExplanation:Be resembles much with Al,…
7 years ago
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
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