Calcination is used in metallurgy to remove
Calcination is used in metallurgy to remove
Options
(a) CO₂ and H₂S (b) H₂O and SiO₂ (c) H₂O and H₂S (d) H₂O and CO₂
Correct Answer:
H₂O and CO₂
Explanation:
No explanation available. […]
Surface Chemistry and Isolation of Elements
Colloidal solution of gold is prepared by
Colloidal solution of gold is prepared by
Options
(a) colloidal mill (b) double decomposition method (c) Bredig’s method (d) Peptization
Correct Answer:
Bredig’s method
Explanation:
No explanation available. Be the first to write […]
Which one of the following is an example of heterogenous catalysis
Which one of the following is an example of heterogenous catalysis
Options
(a) Oxidation of SO₂ and SO₃ by NO (b) Hydrolysis of ethyl acetate by dilute H₂SO₄ (c) Inversion of cane suger […]
Which has least gold number
Which has least gold number
Options
(a) Gelatin (b) Starch (c) Albumin (d) Blood
Correct Answer:
Gelatin
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Wood charcoal is used to decolourise sugar because it
Wood charcoal is used to decolourise sugar because it
Options
(a) adsorbs coloured material (b) adsorbs decoloured material (c) reduces coloured material (d) none of these
Correct Answer:
adsorbs coloured material
Explanation:
It has […]
On palladium the adsorption of hydrogen is known as
On palladium the adsorption of hydrogen is known as
Options
(a) reduction (b) hydrogenation (c) occlusion (d) dehydrogenation
Correct Answer:
occlusion
Explanation:
This is known as occlusion.
Choose the incorrect statement in respect of physisorption
Choose the incorrect statement in respect of physisorption
Options
(a) It is not specific in nature (b) It arises because of van der Waal’s forces (c) It is reversible in nature (d) Enthalpy […]
Which one of the following is correctly matched
Which one of the following is correctly matched
Options
(a) Emulsion-smoke (b) Gel-butter (c) Aerosol-hair cream (d) Sol-whipped cream
Correct Answer:
Gel-butter
Explanation:
No explanation available. Be the first to write the explanation […]
Hair cream is an example of
Hair cream is an example of
Options
(a) gel (b) sol (c) emulsion (d) foam
Correct Answer:
emulsion
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Shape-selective catalysis is a reaction catalysed by
Shape-selective catalysis is a reaction catalysed by
Options
(a) zeolites (b) enzymes (c) platinum (d) Zeigler-Natta catalyst
Correct Answer:
zeolites
Explanation:
Zeolit is a most widely studied shape selective catalyst. Shape selectivity of […]