What do you understand by the terms (i) hydrogen economy (ii) hydrogenation (iii) 'syngas' (iv) water-gas shift reaction (v) fuel cell?

What do you understand by the term hydrogen economy?

What do you understand by (i) electron-deficient (ii) electron-precise (iii) electron-rich compounds of hydrogen ?

Define and understand the following terms: i) Phylum ii) Class iii) Family iv) Order v) Genus

One of the fuel cell uses the reaction of hydrogen and oxygen to form water. Write down the cell reaction taking place in the anode and cathode of the fuel cell.

One of the fuel cells uses the reaction of hydrogen and oxygen to form water.Write down the cell reaction taking place in the anode and cathode of the fuel cell.

What do you understand by isoelectronic species?Name a species that will be isoelectronic with each of the following atoms or ions. i. 'F^-' ii. 'A r' iii. ' M g^(2+)' iv. 'R b^+'

The discovery of antibiotics makes the treatment of diseases very easy. i. What do you understand by 'antibiotics'? ii. Which was the first antibiotic and who discovered it? iii. How are the antibiotics classified? -

Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water and (iii) alkaline water? Write equations wherever necessary.

Write short notes on the following: i)Carbylamine reaction ii) Diazotisation iii) Hoffmảnn's bromamide reaction iv) Coupling reaction v) Ammonolysis vi) Acetylation vii) Gabriel phthalimide śynthesis.

Assertion : The water gas shift reaction can be used to increase the amount of H_(2) in the 'syn gas' mixture. Reason : In this reaction, water is reduced to H_(2) by CO (I) If both assertion and reason are correct and reason is the correct explanation of assertion. (II) Both assertion and reason are correct but reason is not the correct explanation of assertion (III) If assertion is correct and reason is not correct (IV) Assertion is wrong and reason is correct