Q. Explain why aryl halides are less reactive towards nucleophilic substitution reactions?

Q. Resistance of a conductivity cell filled with 0.15 mol $L^{-1}$ NaCl solution is 50 $\Omega$. If resistance of the same cell when filled with 0.02 mol $L^{-1}$ NaCl solution is 500 $\Omega$, calculate the conductivity of 0.02 mol $L^{-1}$ NaCl solution. (The conductivity of 0.15 mol $L^{-1}$ NaCl solution is 1.5 s/m).

Q. Write the chemical reaction to prepare, that polymer which is used to preparation of industrial fibers by addition polymerisation of nitrile containing three carbon atom in presence of peroxide catalyst?

Q. Write the definition of homo polymer & co-polymer.

Q. a) What are monosaccharides? Write the definition?
b) i) Name the products yields from the complete hydrolysis of DNA?
ii) Write the structural formula of sugar moiety in DNA & RNA?
c) Write the name of method related with DNA to identify the dead body in any accident?

Q. a) How drugs can be classified according to different criteria? Write the name of each?
b) How anti histamines work? Give an example of any anti histamine?
c) Write the structural formula of any sleep producing barbiturate?

Q. How much part of an atom of the primitive cubic unit cell actually belongs to a particular unit cell?

Q. Arrange the following ions according to their flocculation power in the coagulation of negative sol.
$N{a}^{+},A{l}^{+3},B{a}^{+2}$

Q. Which series of compounds can be prepared by oxidation of primary alcohols?

Q. Due to which forces physisorption arises?

Q. Explain why hydroxyl group attached to an aromatic ring is more acidic than the one in which hydroxyl group is attached to an alkyl group?

Q. Explain $S{N}^1$ reaction with appropriate example.

Q. What happens when a raw mango placed in concentrated salt solution?

Q. Dislocation of which ion in "$A{g}^{+}B{r}^{-}$" develops Frenkel defect?

Q. What is Saytzeff (Zaitsev) rule? Explain elimination reaction in 2-bromopentane.

Q. At low temperature hydrogen is which type of molecular solid?

Q. Write the IUPAC suffix of that functional group of the compound which is used to prepare dacron.

Q. a) What are the factors which effect the rate of a chemical reaction?
b) Derive the rate constant formula for zero order reaction?
c) Draw a diagram showing effect of catalyst on activation energy.

Q. Why zinc is not a transition element?

Q. The conductivity of 0.001 mol $L^{-1}$ acetic acid is 5 $\times {10}^{-5}sc{m}^{-1}$. Calculate it's dissociation constant if ${\lambda }_m^o$ m for acetic acid is $250sc{m}^{2}mo{l}^{-1}$?

Q. How copper is refined with electrolytic method? Explain with necessary reaction?

Q. Complete the following chemical reactions:

Q. Write the formula to calculate the mole fraction?

Q. Explain adsorption from solution phase? Write Freundlich equation related to it?

Q. Explain the violet colour of $\left[Ti\right(H_{2}O{)}_6{]}^{3+}$ complex on basis of the crystal field theory?

Q. a) What tranquilizers? Write the name of any mild tranquilizer?
b) How food preservatives works. Give an example of food preservative?
c) Why do soaps not work in hard water?

Q. Explain colour & complex formation tendency of transition metal ions?

Q. What will be the value of Van't Hoff factor for ethanoic acid in benzene?

Q. Classify the following into homoleptic & heteroleptic complexes?
i) $K_4\left[Fe\right(CN{)}_6]$
ii) $\left[Co\right(N{H}_3{)}_5\left(C{O}_3\right)]Cl$
iii) $K_2\left[Zn\right(OH{)}_4]$
iv) $\left[Pt\right(N{H}_3{)}_{2}Cl\left(N{O}_2\right)]$

Q. a) What do you mean by amonolysis of alkyl halides give chemical reaction?
b) Write that reaction which is used for following.
i) Ascent of amine series.
ii) To synthesis amine containing one carbon less than that of in the amide.