Question 1
Choose the INCORRECT statement.
◦ Hydrazine is N
2H
2.
◦ Hydroxylamine is NH
2OH.
◦ Hydrazine and its derivatives are used as rocket fuels.
◦ HN
3 is hydrazoic acid.
◦ Nitrogen is a key element in organic and biochemical molecules.
Question 2
Choose the INCORRECT statement.
◦ Hydrogen occurs in more compounds than any other element.
◦ The "water gas" reactions produce combustible gases (CO and H
2) from steam and C(s).
◦ Metallic hydrides are always in fixed ratios of hydrogen to other elements.
◦ Binary compounds of hydrogen are called hydrides.
◦ Hydrogenation reactions are hydrogen added to double or triple bonds in presence of a catalyst.