Q. What is the effect of temperature on chemisorption?

Q. Which of the following is a natural polymer?

Q. What are the products of hydrolysis of sucrose?

Q. Identify the chiral molecule in the following pair.

Q. Write the equations involved in the following reactions:
(i) Reimer - Tietmann reaction
(ii) Williamson synthesis

Q. Why does $N{O}_2$ dimerise?

Q. (a) Draw the structure of major monohalo products in each of the reaction.(refer diagram)
(b) Which halogen compound in each of the following pairs will react faster in $S_{N}2$ reaction:
(i) $C{H}_{3}Br$ or $C{H}_{3}I$
(ii) ${\left(C{H}_3\right)}_{3}C-Cl$ or $C{H}_3-Cl$

Q. Draw the structures of the following:
(i) $Xe{F}_2$ (ii) $Br{F}_3$

Q. (i) What type of non-stoichiometric point defect is responsible for the pink colour of $LiCl$?
(ii) What type of stoichiometric defect is shown by $NaCl$ ?

Q. Account for the following:
(i) Primary amines $(R-N{H}_2)$ have higher boiling point than tertiary amines $\left(R_{3}N\right)$.
(ii) Aniline does not undergo Friedel-Crafts reaction.
(iii) ${\left(C{H}_3\right)}_{2}NH$ is more basic than ${\left(C{H}_3\right)}_{3}N$ in an aqueous solution.

Q. State the Kohlrausch law of independent migration of ions. Why does the conductivity of a solution decrease with dilution?

Q. (i) Write the IUPAC name of the complex $\left[Cr{\left(N{H}_3\right)}_4{Cl}_2\right]Cl$.
(ii) What type of isomerism is exhibited by the complex ${\left[Co{\left(en\right)}_3\right]}^{3+}$?
($en=$ ethane-1, 2-diamine)
(iii) Why is ${\left[Ni{Cl}_4\right]}^{2-}$ paramagnetic but $\left[Ni{\left(CO\right)}_4\right]$ is diamagnetic?
($Cr=24,Co=27,Ni=28$)

Q. What is the role of zinc metal in the extraction of silver?

Q. An element with density $2.8g{cm}^{-3}$ forms a fcc unit cell with edge length $4\times {10}^{-8}cm$. Calculate the molar mass of the element? (Given $N_A=6.022\times {10}^{23}{mol}^{-1}$)

Q.

Experiment	Time $\left(s^{-1}\right)$	Total pressure (atm)
1	0	0.4
2	100	0.7

The following data were obtained during the first order thermal decomposition of $S{O}_2{Cl}_2$ at a constant volume.
$S{O}_{2}Cl\left(g\right)⟶S{O}_2\left(g\right)+{Cl}_2\left(g\right)$
Calculate the rate constant. (Given: $\log 4=0.6021,\log 2=0.3010$)

Q. What are emulsions? What are their different types? Give one example of each type.

Q. (a) Define the following terms related to proteins:
(i) Peptide linkage
(ii) Primary structure
(iii) Denaturation

Q. Write the name of monomers used for getting the following polymers:
(i) Bakelite (ii) Neoprene

Q. Give reasons for the following:
(i) ${\left(C{H}_3\right)}_{3}P=O$ exists but ${\left(C{H}_3\right)}_{3}N=O$ does not.
(ii) Oxygen has less electron gain enthalpy with negative sign than sulphur.
(iii) $H_{3}P{O}_2$ is a stronger reducing agent than $H_{3}P{O}_3$.

Q. The conversion of primary aromatic amines into diazonium salts is known as ______.

Q. (a) Complete the following equations:
(i) ${Cr}_2{O}_7^{2-}+2O{H}^{-}\to$ (ii) $Mn{O}_4^{-}+4H^{+}+3e^{-}\to$
(b) Account for the following:
(i) $Zn$ is not considered as a transition element.
(ii) Transition metals form a larger number of complexes.
(iii) The $E^0$ value for the ${Mn}^{3+}/{Mn}^{2+}$ couple is much more positive than that for ${Cr}^{3+}/{Cr}^{2+}$ couple.

Q. (a) Write the products formed when $C{H}_{3}CHO$ reacts with the following reagents:
(i) $HCN$
(ii) $H_{2}N-OH$
(iii) $C{H}_{3}CHO$ in the presence of dilute $NaOH$

Q. (a) Calculate ${\Delta }_r{G}^0$ for the reaction $Mg\left(s\right)+{Cu}^{2+}\left(aq\right)\to {Mg}^{2+}\left(aq\right)+Cu\left(s\right)$.
Given: $E_{cell}^0=2.71V,1F=96500C{mol}^{-1}$
(b) Name the type of cell that was used in Apollo space program for providing electrical power.

Q. Why is adsorption always exothermic?

Q. On the occasion of World Health Day, Dr. Satpal organized a 'health camp' for the poor farmers living in a nearby village. After check-up, he was shocked to see that most of the farmers suffered from cancer due to regular exposure to pesticides and many were diabetic. They distributed free medicines to them. Dr. Satpal immediately reported the matter to the National Human Rights Commission (NHRC). On the suggestions of NHRC, the government decided to provide medical care, financial assistance, setting up of super-speciality hospitals for treatment and prevention of the deadly disease in the affected villages all over India.
(i) Write the values shown by (a) Dr. Satpal (b) NHRC?
(ii) What type of analgesics are chiefly used for the relief of pains of terminal cancer?
(iii) Give an example of artificial sweetener that could have been recommended to diabetic patients.

Q. Explain the principle of the method of electrolytic refining of metals. Give one example.

Q. (a) Define the following terms:
(i) Molarity (ii) Molal elevation constant $\left(k_b\right)$
(b) A solution containing $15g$ urea (molar mass $=60g{mol}^{-1}$) per litre of solution in water has the same osmotic pressure (isotonic) as a solution of glucose (molar mass $=190g{mol}^{-1}$) in water. Calculate the mass of glucose present in one litre of its solution.

Q. For a chemical reaction $R\to P$, the variation in the concentration $\left(R\right)$ vs. time $\left(t\right)$ plot of solution is given as above.
(i) Predict the order of the reaction.
(ii) What is the slope of the curve?

Q. Name the method used for refining of nickel.

Q. Write the mechanism of the following reaction:
$C{H}_{3}C{H}_{2}OH\stackrel{HBr}{\to }C{H}_{3}C{H}_{2}Br+H_{2}O$