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1. A
   Po
2. B
   Te
3. C
   Br
4. D
   Kr

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1. A
   106.18 g mol$^{-1}$
2. B
   94.6 g mol$^{-1}$
3. C
   88.25 g mol$^{-1}$
4. D
   80.16 g mol$^{-1}$

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1. A
   NH$_4$OH + NH$_4$Cl
2. B
   $\text{C}_6\text{H}_5\text{COOH} + \text{C}_6\text{H}_5\text{COONa}$
3. C
   HCOOH + HCOOK
4. D
   CH$_3$COOH + CH$_3$COONa

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1. A
   NH$_3$
2. B
   H$_2$O
3. C
   SO$_2$
4. D
   BF$_3$

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1. A
   55 g mol$^{-1}$
2. B
   60 g mol$^{-1}$
3. C
   65 g mol$^{-1}$
4. D
   70 g mol$^{-1}$

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1. A
   The particles of dispersed phase have greater affinity for the dispersion medium.
2. B
   These are reversible.
3. C
   These are self-stabilized.
4. D
   Coagulation occurs even by adding very small amount of electrolytes.

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1. A
   6.11
2. B
   3.72
3. C
   4.86
4. D
   5.65

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1. A
   But-1-ene
2. B
   But-2-ene
3. C
   3,4-Dimethylhex-3-ene
4. D
   Pent-2-ene

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1. A
   $\text{PbSO}_4(s) + 2e^- \to \text{Pb}(s) + \text{SO}_4^{2-}(aq)$
2. B
   $\text{Pb}(s) + \text{SO}_4^{2-}(aq) \to \text{PbSO}_4(s) + 2e^-$
3. C
   $\text{PbO}_2(s) + 4\text{H}^+(aq) + \text{SO}_4^{2-}(aq) + 2e^- \to \text{PbSO}_4(s) + 2\text{H}_2\text{O}(l)$
4. D
   $\text{PbSO}_4(s) + 2\text{H}_2\text{O}(l) \to \text{PbO}_2(s) + 4\text{H}^+(aq) + \text{SO}_4^{2-}(aq) + 2e^-$

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1. A
   Alkanols
2. B
   Alkanoic acids
3. C
   Alkyl hydrogen sulphate
4. D
   Oxonium salts

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1. A
   2-Iodopropane
2. B
   2-Iodo-2-methylbutane
3. C
   2-Iodo-3-methylbutane
4. D
   3-Iodopentane

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1. A
   KIO$_3$
2. B
   KI
3. C
   IF$_5$
4. D
   KIO$_4$

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1. A
   One
2. B
   Two
3. C
   Three
4. D
   Four

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1. A
   I > II > III
2. B
   II > III > I
3. C
   III > I > II
4. D
   III > II > I

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1. A
   $R-\text{COCl} \xrightarrow{H_2, Pd-BaSO_4} R-\text{CHO} + \text{HCl}$
2. B
   $R-\text{CN} \xrightarrow{\text{i) SnCl}_2\text{, HCl; ii) H}_3\text{O}^+} R-\text{CHO} + \text{NH}_4\text{Cl}$
3. C
   $R-\text{CHO} \xrightarrow{\text{Zn-Hg, conc. HCl, }\Delta} R-\text{CH}_3 + \text{H}_2\text{O}$
4. D
   $R-\text{CHO} \xrightarrow{\text{i) H}_2\text{N-NH}_2\text{; ii) KOH}} R-\text{CH}_2-R'$

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1. A
   2
2. B
   3
3. C
   4
4. D
   6

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1. A
   dark red
2. B
   violet
3. C
   deep blue
4. D
   green

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1. A
   Propanoic acid
2. B
   Prop-2-enoic acid
3. C
   2-Methylpropanoic acid
4. D
   2-Hydroxypropanoic acid

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1. A
   These have same number of neutrons.
2. B
   These are the atoms of different elements.
3. C
   These have same atomic number.
4. D
   These have different mass number.

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1. A
   15 mL
2. B
   20 mL
3. C
   25 mL
4. D
   35 mL

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1. A
   $\log_{10} A$
2. B
   $-\frac{E_a}{R}$
3. C
   $\ln k$
4. D
   $R/E_a$

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1. A
   Ethanol
2. B
   Ethanal
3. C
   Ethoxyethane
4. D
   Ethanoic acid

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1. A
   Polyethylene
2. B
   Teflon
3. C
   Nylon-6
4. D
   PVC

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1. A
   $\Delta H$
2. B
   $dq$
3. C
   $\Delta S$
4. D
   $\Delta U$

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1. A
   $0.022\text{ mol dm}^{-3}\text{ s}^{-1}$
2. B
   $0.044\text{ mol dm}^{-3}\text{ s}^{-1}$
3. C
   $0.066\text{ mol dm}^{-3}\text{ s}^{-1}$
4. D
   $0.088\text{ mol dm}^{-3}\text{ s}^{-1}$

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