Q. How will you obtain the following? (Give balanced equation.)
(i) Anisole from phenol
(ii) Ethyl acetate from ethanol.

Q. 40% of a first order reaction is completed in 50 minutes. How much time will it take for the completion of 80% of this reaction?

Q. The freezing point of a solution containing 5.85 g of $NaCl$ in 100g of water is $-{3.348}^o$C. Calculate van't Hoff factor 'i' for this solution. What will be the experimental molecular weight of NaCI?
($K_f$ for water = $1.86Kkgmo{l}^{-1}$, at. wt. Na = 23, Cl = 35.5)

Q. In the dehydration of alcohols to alkenes by heating with concentrated sulphuric acid, the initiation step is:

1. formation of carbocation
2. formation of an ester
3. protonation of alcohol molecule
4. elimination of water

Q. Arrange the following in the increasing order of their basic strength:
$C_2{H}_{5}N{H}_2$, $C_6{H}_{5}N{H}_2$, $(C_2{H}_5{)}_{2}NH$

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(square pyramidal, electrical, 74, 26, $s{p}^3{d}^2$, $s{p}^{3}d$, chemical, 68, 32, tetrahedral, yellow, white, iodoform, Lucas).
A Galvanic cell converts __________ energy into ___________ energy.

Q. What happens when benzene diazonium chloride reacts with phenol in weak alkaline medium (Give balanced equation).

Q. Gelatin is added to ice creams.

Q. Medicines are more effective in their colloidal form.

Q. Match the following:

(i)	Rate constant	(a)	Dialysis
(ii)	Biodegradable polymer	(b)	Glycine
(iii)	Zwitter ion	(c)	Arrhenius equation
(iv)	Purification of colloids	(d)	PHBV

Q. Write the names of the monomers for each of the following polymers:
(a) Bakelite
(b) Nylon-2-nylon-6

Q. Explain why:
$M{n}^{2+}$ is more stable than $F{e}^{2+}$ towards oxidation to +3 state.
(At. no. of Mn = 25, Fe = 26)

Q. During the course of an $S_{N}1$ reaction, the intermediate species formed is:

1. a carbocation
2. a free radical
3. a carbanion
4. an intermediate complex

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(square pyramidal, electrical, 74, 26, $s{p}^3{d}^2$, $s{p}^{3}d$, chemical, 68, 32, tetrahedral, yellow, white, iodoform, Lucas)
The shape of $XeO{F}_4$ molecule is ____________ and the hybridisation of xenon atom in the molecule is _____________.

Q. How will you obtain the following? (Give balanced equation.)
(i) Picric acid from phenol.
(ii) Ethyl chloride from diethyl ether.

Q. Purification of aluminium by electrolytic refining is called:

1. Serpeck's process
2. Hoope's process
3. Hall's process
4. Baeyer's process

Q. An aqueous solution containing 12.48g of barium chloride ($BaC{l}_2$) in 1000g of water, boils at ${100.0832}^o$C. Calculate the degree of dissociation of barium chloride. ($K_b$ for water = $0.52Kkgmo{l}^{-1}$, at. wt. Ba = 137, Cl = 35.5)

Q. Name the sulphide ore of Copper. Describe how pure copper is extracted from this ore.

Q. Explain why:
Zr and Hf exhibit similar properties.
(At. no. of Zr = 40, Hf = 72)

Q. Examine the defective crystal given below and answer the question that follows:

$A^{+}$	$B^{-}$	$A^{+}$	$B^{-}$	$A^{+}$
$B^{-}$		$B^{-}$	$A^{+}$	$B^{-}$
$A^{+}$	$B^{-}$	$A^{+}$		$A^{+}$
$B^{-}$	$A^{+}$	$B^{-}$	$A^{+}$	$B^{-}$

State if the above defect is stoichiometric or non-stoichiometric. How does this defect affect the density of the crystal? Also, write the term used for this type of defect.

Q. Explain why:
Transition elements usually form coloured ions.

Q. Name the purine bases and pyrimidine bases present in RNA and DNA.

Q. An aqueous solution of urea freezes at $-{0.186}^o$C. $K_f$ for water = $1.86Kkgmo{l}^{-1}$, $K_b$ for water = $0.512Kkgmo{l}^{-1}$. The boiling point of urea solution will be :

1. $373.065$ K
2. $373.0512$ K
3. $373.512$ K
4. $373.186$ K

Q. Give reason for the following:
For ferric hydroxide sol the coagulating power of phosphate ion is more than chloride ion.

Q. Give a balanced chemical equation to convert methyl cyanide to ethyl alcohol.

Q. Write the IUPAC name of $\left[Co\right(en{)}_{2}C{l}_2{]}^{+}$ ion and draw the structures of its geometrical isomers.

Q. For the complex ion $\left[Fe\right(CN{)}_6{]}^{3-}$, state:
(i) the type of hybridisation.
(ii) the magnetic behaviour.
(iii) the oxidation number of the central metal atom.

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(square pyramidal, electrical, 74, 26, $s{p}^3{d}^2$, $s{p}^{3}d$, chemical, 68, 32, tetrahedral, yellow, white, iodoform, Lucas)
Propan-2-ol on reaction with iodine and sodium hydroxide gives _________ precipitate and the reaction is called _________ test.

Q. Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(square pyramidal, electrical, 74, 26, $s{p}^3{d}^2$, $s{p}^{3}d$, chemical, 68, 32, tetrahedral, yellow, white, iodoform, Lucas)
The percentage of unoccupied spaces in bcc and fcc arrangements are __________ and __________ respectively.

Q. Complete and balance the following chemical equations:
(i) $KMn{O}_4+KI+H_{2}S{O}_4\to$ _________ + ____________ + __________ + ____________
(ii) $K_{2}C{r}_2{O}_7+H_{2}S{O}_4+H_{2}S\to$ __________ + ________ + __________+ _________
(iii) $KMn{O}_4+H_{2}S{O}_4+FeSO4\to$ __________ + ________ + __________+ _________