The case of adsorption of the hydrated alkali metal ions on an ion-exchange
The case of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order:
Options
(a) Li⁺ < K⁺ < Na⁺ < Rb⁺ (b) Rb⁺ < K⁺ < Na⁺ < […]
S and Some P Block Elements
Which one of the alkali metals, forms only, the normal oxide, M₂O on heating
Which one of the alkali metals, forms only, the normal oxide, M₂O on heating in air
Options
(a) Rb (b) K (c) Li (d) Na
Correct Answer:
Li
Explanation:
When alkali metals heated […]
Which one of the following is present as an active ingredient in bleaching
Which one of the following is present as an active ingredient in bleaching powder for bleaching action
Options
(a) CaOCl₂ (b) Ca(OCl)₂ (c) CaO₂Cl (d) CaCl₂
Correct Answer:
Ca(OCl)₂
Explanation:
No explanation available. […]
Which of the following compounds is a peroxide
Which of the following compounds is a peroxide
Options
(a) KO₂ (b) BaO₂ (c) MnO₂ (d) NO₂
Correct Answer:
BaO₂
Explanation:
No explanation available. Be the first to write the explanation for this […]
Property of the alkaline earth metals that increases with their atomic number
Property of the alkaline earth metals that increases with their atomic number
Options
(a) solubility of their hydroxides in water (b) solubility of their sulphates in water (c) ionization energy (d) electronegativity
Correct […]
Which of the following oxides is not expected to react with sodium hydroxide
Which of the following oxides is not expected to react with sodium hydroxide
Options
(a) CaO (b) SiO₂ (c) BeO (d) B₂O₃
Correct Answer:
CaO
Explanation:
No explanation available. Be the first to […]
In the case of alkali metals, the covalent character decreases in the order
In the case of alkali metals, the covalent character decreases in the order
Options
(a) MF > MCl > MBr > MI (b) MF > MCl > MI > MBr (c) MI > […]
A solid compound X on heating gives CO₂ and a residue .
A solid compound X on heating gives CO₂ and a residue . The residue mixed with water forms Y. On passing an excess of CO₂ through Y in water, a clear solution Z is obtained […]
Identify the correct statement:
Identify the correct statement:
Options
(a) Plaster of paris can be obtained by hydration of gypsum (b) Plaster of paris is obtained by partical oxidation of gypsum (c) Gypsum contains a lower percentage […]
The formula for calcium chlorite is
The formula for calcium chlorite is
Options
(a) CaClO₂ (b) Ca(ClO₂)₂ (c) Ca(ClO₄)₂ (d) Ca(ClO₃)₂
Correct Answer:
Ca(ClO2)₂
Explanation:
No explanation available. Be the first to write the explanation for this question by […]