Which one of the following is a false statement
Which one of the following is a false statement
Options
(a) Cell fluid is an example of sol (b) Butter is an example of gel (c) Cheese is an example of emulsion (d) […]
Surface Chemistry and Isolation of Elements
If the adsorbate is held on a surface by weak Van der Walls forces
If the adsorbate is held on a surface by weak Van der Walls forces, the absorption process is called
Options
(a) physical adsorption (b) chemical adsorption (c) heat of adsorption (d) enthalpy of […]
Which one of the following does not involve coagulation
Which one of the following does not involve coagulation
Options
(a) Clotting of blood by the use of ferric chloride (b) Formation of delta region (c) Treatment of drinking water by potash alum […]
The base principle of Cottrell’s precipitator is
The base principle of Cottrell’s precipitator is
Options
(a) neutralisation of charge on colloidal particles (b) scattering of light (c) Le-chatrlier’s principle (d) peptisation
Correct Answer:
neutralisation of charge on colloidal particles
Activated charcoal is used to remove colouring matter from pure substances.
Activated charcoal is used to remove colouring matter from pure substances.It works by
Options
(a) oxidation (b) reduction (c) bleaching (d) adsorption
Correct Answer:
adsorption
Explanation:
It has been observed that the surface […]
Identify the gas which is readily adsorbed by activated charcoal
Identify the gas which is readily adsorbed by activated charcoal
Options
(a) N₂ (b) SO₂ (c) H₂ (d) O₂
Correct Answer:
SO₂
Explanation:
In general, more easily liquefiable gases ( i.e. higher critical […]
In the extraction of copper from its sulphide ore, the metal is finally obtained
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with
Options
(a) carbon monoxide (b) copper (I) sulphide (c) sulphure dioxide (d) […]
‘Metals are usually not found as nitrates in their ores”. Out of the following two
‘Metals are usually not found as nitrates in their ores”. Out of the following two (i) and (ii) reasons which is true for the above observation.(i)Metal nitrates are highly unstable.(ii)Metal nitrates are highly soluble in […]
Which property of colloidal solution is not dependent on the charge on colloidal
Which property of colloidal solution is not dependent on the charge on colloidal particles
Options
(a) Coagulation (b) Electrophoresis (c) Electro-osmosis (d) Tyndall effect
Correct Answer:
Tyndall effect
Explanation:
No explanation available. Be […]
In the case of auto catalysis
In the case of auto catalysis
Options
(a) product catalyses (b) solvent catalyses (c) reactant catalyses (d) heat produced in the reaction catalyses
Correct Answer:
product catalyses
Explanation:
No explanation available. Be the […]