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1. A
   OR gate
2. B
   NOT gate
3. C
   NOR gate
4. D
   AND gate

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1. A
   $\sqrt{\frac{T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$
2. B
   $\sqrt{\frac{2T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$
3. C
   $\sqrt{\frac{4T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$
4. D
   $\sqrt{\frac{6T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$

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1. A
   $\frac{X}{4}\,\Omega$
2. B
   $\frac{X}{2}\,\Omega$
3. C
   $2X\,\Omega$
4. D
   $4X\,\Omega$

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

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1. A
   200 m/s
2. B
   300 m/s
3. C
   400 m/s
4. D
   600 m/s

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1. A
   1:6
2. B
   3:8
3. C
   2:3
4. D
   3:4

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1. A
   4.36
2. B
   4.76
3. C
   5.16
4. D
   5.36

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1. A
   $4.0\times10^{-5}\,\text{mol L}^{-1}$
2. B
   $8.0\times10^{-7}\,\text{mol L}^{-1}$
3. C
   $7.5\times10^{-5}\,\text{mol L}^{-1}$
4. D
   $6.4\times10^{-4}\,\text{mol L}^{-1}$

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1. A
   Acetaldehyde
2. B
   Acetic acid
3. C
   Methane
4. D
   Methyl alcohol

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1. A
   It is obtained from ethene.
2. B
   It needs high pressure (1000–2000 atm) for synthesis.
3. C
   Polymerization occurs in presence of Ziegler–Natta catalyst.
4. D
   Melting point is higher than LDP.

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1. A
   $0.029\,\text{mol dm}^{-3}$
2. B
   $0.022\,\text{mol dm}^{-3}$
3. C
   $0.032\,\text{mol dm}^{-3}$
4. D
   $0.038\,\text{mol dm}^{-3}$

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1. A
   0.625 atm
2. B
   0.744 atm
3. C
   0.827 atm
4. D
   0.936 atm

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1. A
   These substances have sharp melting point.
2. B
   These have different values of refractive index in different directions.
3. C
   The constituent particles are orderly arranged.
4. D
   These are isotropic.

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1. A
   2.2%
2. B
   3.5%
3. C
   4.2%
4. D
   1.0%

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1. A
   Monodentate
2. B
   Bidentate
3. C
   Tetradentate
4. D
   Hexadentate

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1. A
   0
2. B
   1
3. C
   2
4. D
   3

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1. A
   CrO$_3$
2. B
   CO, HCl/AlCl$_3$ (anhyd.)
3. C
   CrO$_2$Cl$_2$, CS$_2$
4. D
   Cl$_2$/h$\nu$, H$_3$O$^+$

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1. A
   K$_3$[Al(C$_2$O$_4$)$_3$]
2. B
   [Co(C$_2$O$_4$)$_3$]$^{3-}$
3. C
   Na$_3$[AlF$_6$]\)
4. D
   [Co(H$_2$O)(NH$_3$)$_5$]I$_3$

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1. A
   Chloroform
2. B
   Water
3. C
   Carbon tetrachloride
4. D
   Carbon disulphide

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1. A
   Formation of oxide or alcohol-bridged network.
2. B
   Dehydration.
3. C
   Aging of the gel.
4. D
   Drying of the gel.

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1. A
   $1.8\times10^{-5}\,s^{-1}$
2. B
   $1.5\times10^{-5}\,s^{-1}$
3. C
   $2.1\times10^{-5}\,s^{-1}$
4. D
   $2.4\times10^{-5}\,s^{-1}$

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1. A
   $\dfrac{h}{2\pi}$
2. B
   $\dfrac{h}{\pi}$
3. C
   $\dfrac{2h}{\pi}$
4. D
   $\dfrac{3h}{\pi}$

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1. A
   Natural rubber
2. B
   Polypropene
3. C
   PVC
4. D
   Terylene

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1. A
   $-8.00\,\text{kJ}$
2. B
   $15.0\,\text{kJ}$
3. C
   $30.0\,\text{kJ}$
4. D
   $-88.4\,\text{kJ}$

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1. A
   Glycogen
2. B
   Cellulose
3. C
   Ribose
4. D
   Stachyose

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