Q. Give the composition of following alloys:
(a) Brass
(b) German Silver

Q. What are Emulsions? How are they classified?

Q. Give the sources of the following vitamins and name the diseases caused by their deficiency:
(a) A (b) D (c) E (d) K

Q. Name the monomers present in the following polymers:
(a) Bakelite
(b) Buna- N

Q. How does Ozone react with the following?
(i) $PbS$ (ii) $C_2{H}_4$

Q. What are Disinfectants? Give one example.

Q. State Raoult's Law. Calculate the mole fraction of $H_{2}S{O}_4$ in a solution containing $98\%$ of $H_{2}S{O}_4$ by mass.

Q. Explain Werner's theory of coordinate compounds with suitable examples?

Q. Explain the purification of sulphide ore by Froth floatation method.

Q. What are food preservatives? Give example

Q. Write the equation involved in the following reactions:
(i) Reimer-Tiemann reaction (ii) Kolbe's reaction

Q. Explain the following reaction:
(a) Sandmeyer reaction
(b) Wurtz's Fitting reaction

Q. How is chlorine manufactured by Deacon's method?

Q. Calculate the spin only magnetic moment of $F{e}^{2+}$.[ At. no. = 26]

Q. How is Nitric Acid manufactured by Ostwald's Process?

Q. What is vulcanization of rubber?

Q. What are Isotonic Solution ?

Q. How $Xe{F}_2$ and $Xe{F}_4$ are prepared? What are their structure?

Q. What is Primary Battery? Give one example.

Q. Give a detailed account of the collision theory of reaction rates of bimolecular gaseous reactions.

Q. Explain the Acidic nature of phenols and compare with that of alcohols.

Q. What happen when $Cl$ reacts with dry slaked lime?