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1. A
   3
2. B
   5
3. C
   4
4. D
   6

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1. A
   Enantiomers have identical refractive index.
2. B
   Enantiomers have same chemical properties.
3. C
   Enantiomers are superimposable mirror images of each other.
4. D
   Enantiomers have equal but opposite optical rotation.

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1. A
   n-Butylamine
2. B
   tert-Butylamine
3. C
   Ethyl dimethyl amine
4. D
   Diethylamine

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1. A
   $\text{Na}_3[\text{Co}(\text{NO}_2)_6]$
2. B
   $\text{Na}_2[\text{Co}(\text{NO}_2)_6]$
3. C
   $[\text{Co}(\text{Na})(\text{NO}_2)_6]$
4. D
   $\text{Na}_3[\text{Co}(\text{ONO})_6]$

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1. A
   $1.17\times10^{-23}\,\text{cm}^3$
2. B
   $4.79\times10^{-23}\,\text{cm}^3$
3. C
   $3.31\times10^{-23}\,\text{cm}^3$
4. D
   $2.33\times10^{-23}\,\text{cm}^3$

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1. A
   O
2. B
   S
3. C
   Se
4. D
   Te

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

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1. A
   $\text{Ti}^{3+}$
2. B
   $\text{V}^{3+}$
3. C
   $\text{Sc}^{3+}$
4. D
   $\text{Cu}^{2+}$

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1. A
   0.55 K
2. B
   0.74 K
3. C
   0.86 K
4. D
   0.98 K

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1. A
   The anode acts as negative electrode.
2. B
   The cathode acts as a positive electrode.
3. C
   It converts electrical energy into chemical energy.
4. D
   Dry cell is an example of voltaic cell.

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1. A
   accept a pair of electron
2. B
   donate a pair of electron
3. C
   accept $\text{H}^+$ ions
4. D
   donate $\text{OH}^-$ ions

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1. A
   Vapour pressure lowering
2. B
   Boiling point
3. C
   Freezing point depression
4. D
   Osmotic pressure

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1. A
   $1\times10^{-3}\,\text{s}^{-1}$
2. B
   $2\times10^{-3}\,\text{s}^{-1}$
3. C
   $3\times10^{-3}\,\text{s}^{-1}$
4. D
   $4\times10^{-3}\,\text{s}^{-1}$

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1. A
   Pyrrole
2. B
   Piperidine
3. C
   Pyridine
4. D
   Pyran

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1. A
   4, 8
2. B
   9, 18
3. C
   16, 32
4. D
   1, 2

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1. A
   Aldotriose
2. B
   Aldotetrose
3. C
   Ketotetrose
4. D
   Ketopentose

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1. A
   7
2. B
   14
3. C
   1
4. D
   3

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1. A
   Sr
2. B
   Rb
3. C
   Na
4. D
   Li

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

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1. A
   3-Bromo-4-ethylbut-3-ene
2. B
   3-Bromo-4-methylhex-3-ene
3. C
   4-Bromo-3-methylhex-3-ene
4. D
   4-Bromo-4-ethyl-3-methylbut-3-ene

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1. A
   $6.022\times10^{22}$
2. B
   $2.4088\times10^{23}$
3. C
   $1.8066\times10^{22}$
4. D
   $6.022\times10^{23}$

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1. A
   125 s
2. B
   250 s
3. C
   100 s
4. D
   150 s

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1. A
   Benzal chloride
2. B
   Benzaldehyde
3. C
   Benzyl alcohol
4. D
   Benzoic acid

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1. A
   70.1%
2. B
   77.7%
3. C
   90.5%
4. D
   95.0%

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1. A
   Methyl carbinol
2. B
   Ethyl carbinol
3. C
   Dimethyl carbinol
4. D
   Isopropyl carbinol

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