Chemistry-
General
Easy
Question
If the absorbate is held on a surface by weak Vander Waal's forces, the absorption process is called
- Physical adsorption
- Chemical adsorption
- Heat of adsorption
- Enthalpy of adsorption
The correct answer is: Physical adsorption
Related Questions to study
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Wood charcoal is used to decolourise sugar because it
Wood charcoal is used to decolourise sugar because it
Chemistry-General
Chemistry-
Which among the following statement is false
Which among the following statement is false
Chemistry-General
Chemistry-
Chemisorption
Chemisorption
Chemistry-General
Chemistry-
Chemisorption
Chemisorption
Chemistry-General
Chemistry-
Assertion:Galvanised iron does not rust.
Reason :Zinc has a more negative electrode potential than iron.
Assertion:Galvanised iron does not rust.
Reason :Zinc has a more negative electrode potential than iron.
Chemistry-General
Chemistry-
Assertion:Gold is recovered from its solution containing aurocynaide complex by adding zinc dust.
Reason:Zinc is more electropositive than gold.
Assertion:Gold is recovered from its solution containing aurocynaide complex by adding zinc dust.
Reason:Zinc is more electropositive than gold.
Chemistry-General
Chemistry-
Assertion:Lead, tin and bismuth are purified by liquation method.
Reason:Lead, tin and bismuth have low m.p. as compared to impurities.
Assertion:Lead, tin and bismuth are purified by liquation method.
Reason:Lead, tin and bismuth have low m.p. as compared to impurities.
Chemistry-General
Chemistry-
Assertion:Wolframite impurities are separated from cassiterite by electromagnetic separation.
Assertion:Wolframite impurities are separated from cassiterite by electromagnetic separation.
Chemistry-General
Chemistry-
Assertion:In Hall and Heroult's process, Al is extracted by electrolysis of a fused mixture of alumina, cryolite and fluorspar.
Reason:Addition of cryolite and fluorspar lowers the fusion temperature and increases the conductivity of the electrolyte.
Assertion:In Hall and Heroult's process, Al is extracted by electrolysis of a fused mixture of alumina, cryolite and fluorspar.
Reason:Addition of cryolite and fluorspar lowers the fusion temperature and increases the conductivity of the electrolyte.
Chemistry-General
Chemistry-
Assertion:Levigation is used for the separation of oxide ores from impurities.
Assertion:Levigation is used for the separation of oxide ores from impurities.
Chemistry-General
Chemistry-
Assertion:Leaching is a process of reduction.
Reason:Leaching involves treatment of the ore with a suitable reagent so as to make it soluble while impurities remains insoluble.
Assertion:Leaching is a process of reduction.
Reason:Leaching involves treatment of the ore with a suitable reagent so as to make it soluble while impurities remains insoluble.
Chemistry-General
Chemistry-
Assertion:Coke and flux are used in smelting.
Reason:The phenomenon in which ore is mixed with suitable flux and coke is heated to fusion is known as smelting.
Assertion:Coke and flux are used in smelting.
Reason:The phenomenon in which ore is mixed with suitable flux and coke is heated to fusion is known as smelting.
Chemistry-General
Chemistry-
Assertion:Zinc is used and copper is not used in the recovery of 
from the complex 
Reason:Zinc is a powerful reducing agent than copper.
Assertion:Zinc is used and copper is not used in the recovery of from the complex
Reason:Zinc is a powerful reducing agent than copper.
Chemistry-General
Chemistry-
Assertion:Iron is found in the free state in nature
Reason:Iron is highly reactive element
Assertion:Iron is found in the free state in nature
Reason:Iron is highly reactive element
Chemistry-General
Chemistry-
Assertion:
is amphoteric in nature
Reason:
and 
bonds can be broken with equal ease in
Assertion: is amphoteric in nature
Reason: and bonds can be broken with equal ease in
Chemistry-General
