The hydration energy of Mg²⁺ is greater than that of
The hydration energy of Mg²⁺ is greater than that of
Options
(a) Na⁺ (b) Be²⁺ (c) Mg³⁺ (d) Al³⁺
Correct Answer:
Na⁺
Explanation:
Hydration energy depends on charge of ion and ionic radius. […]
Questions
NaOCl is used as a bleaching agent and sterilising agent. It can be synthesized
NaOCl is used as a bleaching agent and sterilising agent. It can be synthesized by the action of
Options
(a) NaCl with H₂O (b) NH₄Cl with NaOH (c) Cl₂ with cold and dilute […]
Which of the following corresponds to the electronic configuration 1s², 2s²,2p⁶
Which of the following corresponds to the electronic configuration 1s², 2s²,2p⁶,3s²
Options
(a) Magnesium (b) Helium (c) Argon (d) Sodium
Correct Answer:
Magnesium
Explanation:
No explanation available. Be the first to write […]
Bleaching powder is obtained by treating Cl₂ with
Bleaching powder is obtained by treating Cl₂ with
Options
(a) CaOCl₂ (b) CaO (c) Ca(OH)₂ solution (d) CaCO₃
Correct Answer:
Ca(OH)₂ solution
Explanation:
No explanation available. Be the first to write the explanation […]
Gas A is bubbled through slacked lime, a white precipitate is formed.
Gas A is bubbled through slacked lime, a white precipitate is formed. On prolonged bubbling the precipitate is dissolved. On heating the resultant solution, the white precipitate reappeares with evolution of gas B. The gases […]
The number of hydroxide ions produced by one molecule of sodium carbonate
The number of hydroxide ions produced by one molecule of sodium carbonate (Na₂CO₃) on hydrolysis is
Options
(a) 3 (b) 1 (c) 4 (d) 2
Correct Answer:
2
Explanation:
No explanation available. Be […]
Which of the following is not soluble in NaOH
Which of the following is not soluble in NaOH
Options
(a) Fe(OH)₃ (b) Zn(OH)₂ (c) Al(OH)₃ (d) Sn(OH)₂
Correct Answer:
Fe(OH)₃
Explanation:
No explanation available. Be the first to write the explanation for […]
Plaster of paris is used
Plaster of paris is used
Options
(a) in surgery and dentistry (b) as a white wash (c) as a constituent of toothpaste (d) for the preparation of RCC
Correct Answer:
in surgery and […]
Magnesium does not decompose in
Magnesium does not decompose in
Options
(a) steam (b) hot water (c) cold water (d) semi-hot water
Correct Answer:
cold water
Explanation:
Magnesium has a very slight reaction with cold water. The reaction soon […]
K₂Cr₂O₇ on heating with aqueous NaOH gives
K₂Cr₂O₇ on heating with aqueous NaOH gives
Options
(a) CrO₄²⁻ (b) Cr(OH)₃ (c) Cr₂O₇²⁻ (d) Cr(OH)₂
Correct Answer:
CrO₄²⁻
Explanation:
No explanation available. Be the first to write the explanation for this question […]