Which of the following statements is inc...

Which of the following statements is incorrect regarding physisorption ?

It occurs because of van der Waals' forces

More easily liquefiabie gases are adsorbed readily

Under high pressure it results into multimolecular layer on adsorbent surface

Enthalpy of adsorption is low and positive.

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The correct Answer is:

For physisorption. `DeltaH` is negative.

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Which of the following statement is incorrect ?

Oxidation is loss of electrons or increase in oxidation number.

A substance which decreases the oxidation number of other substance in a chemical reaction is a reducing agent.

Oxidising agent is a substance whose oxidation number increases.

Reducing agent is a substance which can give one or more electrons.

the rate law for any reaction cannot be determined experimentally

complex reactions have fractional order

biomoleculr reactions involve simultaneous collision between two species

molecularity is only applicable for elementary reaction

Alzheimer's disease induces senility in youth. It may be caused due to the interaction of Al with internal human organs.

`B_5N_5H_8` is prepared from inorganic benzene by passing silent electric discharge through it and is known as inorganic naphthalene.

B-F bond order in `BF_3` is 1-5

Lapis Lazuli is blue in colour