Biomolecules — Chemistry STD 12 Science — Question

Write note on Mercury cell (Zn-Hg)

The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:

Experiment	[A]/mol L-1	[B]/mol L-1	Initial rate/mol L-1 min-1
I	0.1	0.1	2.0 × 10-2
II	-	0.2	4.0 × 10-2
III	0.4	0.4	-
IV	-	0.2	2.0 × 10-2

Name two fat soluble vitamins, their sources and the diseases caused due to their deficiency in diet.

Write the principle for the extraction of copper from sulphide ore.

An organic compound with the molecular formula C₉H₁₀O forms 2,4-DNP derivative, reduces Tollens’ reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzenedicarboxylic acid. Identify the compound.

Give examples of zero order reaction .

Compound (A) is formed when benzene diazonium chloride is mixed with KI solution. Compound (B) is formed when ( A ) reacts with sodium in the presence of dry ether. Write the names of (A) and (B) and the equations of the chemical reactions involved.