S and Some P Block Elements

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

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

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

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 […]

Bleaching powder is obtained by treating chloride with

Options

(a) CaO (b) CaSO₄ (c) CaCO₃ (d) Ca(OH)₂

Correct Answer:

Ca(OH)₂

Explanation:

No explanation available. Be the first to write the explanation for this […]

Grignard reagent is prepared by the reaction between

Options

(a) zinc and alkyne (b) magnesium and alkane (c) zinc and alkyl halide (d) magnesium and alkyl halide

Correct Answer:

magnesium and alkyl halide

[…]

In which process,fused sodium hydroxide is eletrolysed at a 330⁰C temperature for extraction of sodium

Options

(a) Castner’s process (b) Cyanide process (c) Down’s process (d) both (b) and (c)

Correct Answer:

Castner’s […]