Q. Give balanced chemical equations for the following reactions:
(i) Fluorine is passed through cold, dilute $NaOH$ solution.
(ii) Hydrogen peroxide is treated with acidified $KMn{O}_4$ solution.
(iii) Sulphuric acid is treated with hydrogen sulphide.

Q. Draw the structure of xenon tetrafluoride molecule and state the hybridization of the central atom and the geometry of the molecule.

Q. An organic compound $A$ with molecular formula $C_2{H}_{7}N$ on reaction with nitrous acid gives a compound $B$. $B$ on controlled gives compound $C$. $C$ reduces Tollen's reagent to given silver mirror and $D$. $B$ reacts with $D$ in the presence of concentrated sulphuric acid to give sweet smelling compound $E$. Identify $A,B,C,D$ and $E$. Give the reaction of $C$ with ammonia?

Q. Identify the compounds $A,B,C,D,E$ and $F$:
${CH}_{3}CO{CH}_3\underset{\left(O\right)}{\overset{Conc.H{NO}_3}{\to }}A\underset{}{\overset{SO{Cl}_2}{\to }}B\underset{}{\overset{{NH}_3}{\to }}C\underset{}{\overset{LiAl{H}_4}{\to }}D\underset{}{\overset{H{NO}_2}{\to }}E\underset{}{\overset{{CH}_{3}COCl}{\to }}F$

Q. Explain the following:
(i) When ${NH}_{4}Cl$ and ${NH}_{4}OH$ are added to a solution containing both, ${Fe}^{3+}$ and ${Ca}^{2+}$ ions, which ion is precipitated first and why?
(ii) Dissociation of $H_{2}S$ is suppressed in acidic medium.

Q. The specific conductance of a $0.01M$ solution of acetic acid at $298K$ is $1.65\times {10}^{-4}$ ${ohm}^{-1}$ ${cm}^{-1}$. The molar conductance at infinite dilution for $H^{+}$ ion and ${CH}_{3}CO{O}^{-}$ ion are $349.1{ohm}^{-1}$ ${cm}^2{mol}^{-1}$ and $40.9{ohm}^{-1}$ ${cm}^2{mol}^{-1}$ respectively.
Calculate:

Q. Calculate the e.m.f of the following cell reaction at $298K$:
${Mg}_{\left(s\right)}+{Cu}^{2+}\left(0.0001M\right)\to {Mg}^{2+}\left(0.001M\right)+{Cu}_{\left(s\right)}$
The standard potential $\left(E^o\right)$ of teh cell is $2.71V$.

Q. Give balanced equations for the following named reactions:
(i) Reimer-Tiemann reaction
(ii) Rosenmund reaction
(iii) Hoffmann's degradation reaction

Q. What is the effect of temperature on the ionic product of water? How will it change the pH value of a neutral solution?

Q. For a crystal of sodium chloride, state:
(i) The type of lattice in which it crystallizes.
(ii) The coordination number of each sodium ion and chloride ion in the crystal lattice.
(iii) The number of sodium ions and chloride ions present in a unit cell of sodium chloride.
(iv) The structural arrangement of the sodium chloride crystal.

Q. (i) How is iodoform prepared from ethanol? Give balanced equation.
(ii) What will be the product formed when chlorobenzene is heated with sodium metal in the presence of dry either?

Q. Chromium metal crystallises with a body centered cubic lattice. The edge length of the unit cell is found to be $287$ pm. Calculate the atomic radius. What would be the density of chromium in $g/{cm}^3$? (atomic mass of $Cr=52.99$)

Q. Consider the following reaction:
$N_2{O}_{4\left(g\right)}+Heat\rightleftharpoons 2{NO}_{2\left(g\right)}$
How is the composition of equilibrium mixture affected by:
(i) A change in temperature
(ii) A change in pressure
(iii) A change in concentration of $N_2{O}_4$
(iv) The removal of ${NO}_2$ from the reaction mixture.

Q. Give balanced equations for the following reactions:
(i) How will you convert ethyl amine to methyl amine?
(ii) What is the effect of denaturation on the structure of proteins?
(iii) Name the nitrogen base residues present in DNA.

Q. State the hybridization and magnetic property of ${\left[Fe{\left(CN\right)}_6\right]}^{3-}$ ion according to the valence bond theory.

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(increases, decreases, positive, efficient, 68, non-efficient, no $\alpha$-hydrogen, $\alpha$-hydrogen, negative, Rosenmund's, greater, Cannizzaro, 74, common-ion effect, lesser, buffer action, diamagnetic, paramagnetic)
The more .................... is standard reduction potential of a metal, the ............... is its ability to displace hydrogen from acids.

Q. What is the difference between order of a reaction and the molecularity of a reaction?

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(increases, decreases, positive, efficient, 68, non-efficient, no $\alpha$-hydrogen, $\alpha$-hydrogen, negative, Rosenmund's, greater, Cannizzaro, 74, common-ion effect, lesser, buffer action, diamagnetic, paramagnetic)
Solubility of silver chloride ............... in the presence of sodium chloride because of ............... .

Q. (i) Arrange the following compounds in the ascending order of their basic strength and give reasons for your answer:
Methylamine, Aniline, Ethylamine, Diethyl ether
(ii) Name the monomers and the type of polymerization in each of the folloiwng polymers:
(a) Polyester (b) Bakelite

Q. (i) What type of isomers are $\left[Co{\left({NH}_3\right)}_{5}Br\right]{SO}_4$ and $\left[Co{\left({NH}_3\right)}_5{SO}_4\right]Br$? Give a chemical test to distinguish between them.
(ii) Write the structures of optical isomers of the complex ion ${\left[Co{\left(en\right)}_2{Cl}_2\right]}^{+}$

Q. Name the important ore of silver. Write all the steps and reactions involved in the Cyanide process for the extraction of silver from its ore.

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(increases, decreases, positive, efficient, 68, non-efficient, no $\alpha$-hydrogen, $\alpha$-hydrogen, negative, Rosenmund's, greater, Cannizzaro, 74, common-ion effect, lesser, buffer action, diamagnetic, paramagnetic)
Both $ccp$ and $hcp$ are _______ packings and occupy about _______% of the available space.

Q. Give balanced equations for the following reactions:
(i) Aniline is treated with nitrous acid and $HCl$ at low temperature.
(ii) Acetyl chloride is treated with ethyl alcohol.
(iii) Formaldehyde is treated with ammonia.

Q. A solution containing $0.5g$ of $KCl$ dissolved in $100g$ of water and freezes at ${0.24}^{o}C$. Calculate the degree of dissociation of the salt. ($K_f$ for water $={1.86}^{o}C$. Atomic weights [$K=39,Cl=35.5$].

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(increases, decreases, positive, efficient, 68, non-efficient, no $\alpha$ -hydrogen, $\alpha$-hydrogen, negative, Rosenmund's, greater, Cannizzaro, 74, common-ion effect, lesser, buffer action, diamagnetic, paramagnetic)
Benzaldehyde undergoes ______ in reaction on treatment with concentrated sodium hydroxide because it has ______ atom.

Q. Write the IUPAC names of the following coordination compounds:
(i) $\left[Cr{\left({NH}_3\right)}_4{\left(H_{2}O\right)}_2\right]{Cl}_3$
(ii) $\left[Pt{Cl}_2{\left({NH}_3\right)}_4\right]\left[Pt{Cl}_4\right]$

Q. Give one chemical test to distinguish between the following pairs of compounds:
(i) Ethylamine and diethylamine
(ii) Acetaldehyde and benzaldehyde

Q. Name the crystal structure of the copper metal.

Q. How can the following conversions be brought about:
(i) Glycerol to formic acid
(ii) Chlorobenzene to phenol
(iii) Diethyl ether to ethanol
(iv) Phenol to aniline

Q. Explain the following:
$\left(i\right)$ Why do transition metal ions possess a great tendency to form complexes?
$\left(ii\right)$ The paramagnetic character in $3d$-transition series elements increases upto $Mn$ and then decreases.