Use the list given below to answer the following question:

[List: diamond, sodium chloride, silicon dioxide, methane, hydrogen chloride]

which substance in the list is an example of compound with giant structure of molecules?

Q. Name the method used for preparation of the following salts from the list given below:
(i) Sodium nitrate
(ii) Iron (III) chloride
(iii) Lead chloride
(iv) Zinc sulphate
(v) Sodium hydrogen sulphate.
List:
(a) Simple displacement
(b) Neutralization
(c) Decomposition by acid
(d) Double decomposition
(e) Direct synthesis

Q. Answer the following question relating your answers only -to salts in the list given below:

Q. Represent each of the following molecules using Lewis notation:
(a) bromine gas $\left(B{r}_2\right)$ (b) calcium chloride $\left(CaC{l}_2\right)$ (c)carbon dioxide $\left(C{O}_2\right)$ (d) Which of the three molecules listed above contains a double bond?

Q.

Pick the odd member from the list giving reasons :

(a) Ammonia, sulphur dioxide, hydrogen chloride, carbon dioxide.

(b) Copper oxide, aluminium oxide, sodium oxide, magnesium oxide.

Q. Select from the list given (a to e) one substance in each case which matches the description given in parts (i) to (v). (Note: Each substance is used only one in the answer.)
(a) Nitroso Iron (II) sulphate
(b) Iron (III) chloride
(c) Chromium sulphate
(d) Lead (II) chloride
(e) Sodium chloride.
(i) A compound which is deliquescent.
(ii) A compound which is insoluble in cold water, but soluble in hot water.
(iii) The compound responsible for the brown ring during the brown ring test of nitrate ion.
(iv) A compound whose aqueous solution is neutral in nature.
(v) The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution.