Build a question paper in 60 seconds.

1. A
   LEDs are energy efficient.
2. B
   LED have long life time if properly manufactured.
3. C
   Brightness of light emitted by LED cannot be controlled
4. D
   Colours produced by LED do not fade out.

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1. A
   0.5 V
2. B
   1 V
3. C
   1.2 V
4. D
   1.5 V

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1. A
   $\\\frac{\lambda}{4}$
2. B
   $\\\frac{\lambda}{2}$
3. C
   $\lambda$
4. D
   $2\lambda$

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1. A
   5:6
2. B
   6:5
3. C
   9:13
4. D
   13:9

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

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1. A
   5:125
2. B
   5:81
3. C
   7:27
4. D
   9:132

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1. A
   The driving and opposing forces differ by large amount.
2. B
   The process can be reversed by infinitesimal change in pressure.
3. C
   A reversible process occurs very slowly.
4. D
   The system attains mechanical equilibrium at the end of every step

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1. A
   +2 to +3
2. B
   -2 to +3
3. C
   +7 to +3
4. D
   +6 to +3

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1. A
   It needs $O_2$ or peroxide initiator in synthesis process
2. B
   It is a branched chain polymer.
3. C
   It needs low pressure about 6-4 atm in synthesis process.
4. D
   It is a branched chain polymer.

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1. A
   Myosin
2. B
   Insulin
3. C
   Legumelin
4. D
   Serum albumin

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1. A
   Fitting reaction
2. B
   Friedel Crafts reaction
3. C
   Finkelstein reaction
4. D
   Swartz reaction

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1. A
   473.6 pm
2. B
   334.6 pm
3. C
   386.3 pm
4. D
   836.5 pm

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1. A
   Red
2. B
   Blue
3. C
   Yellow
4. D
   Violet

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1. A
   $CH_3{-}CH_2{-}CH{=}CH{-}X$
2. B
   $CH_3{-}C{\equiv}C{-}CH_2{-}X$
3. C
   $CH{\equiv}C{-}CH_2{-}CH_2{-}X$
4. D
   $CH_3{-}CH_2{-}C{\equiv}C{-}X$

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1. A
   $1.26 \times 10^{-5}$ M
2. B
   $1.00 \times 10^{-9}$ M
3. C
   $2.6 \times 10^{-5}$ M
4. D
   $1.56 \times 10^{-9}$ M

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1. A
   o-nitrochlorobenzene
2. B
   p-nitrochlorobenzene
3. C
   m-nitrochlorobenzene
4. D
   2,4,6-trinitrochlorobenzene

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1. A
   -0.05 V
2. B
   0.03 V
3. C
   -0.06 V
4. D
   0.07 V

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1. A
   CO(g)
2. B
   CO₂(g)
3. C
   COCl₂(g)
4. D
   H₂(g)

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1. A
   Fe
2. B
   Mn
3. C
   Ni
4. D
   Co

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1. A
   Dalton's law
2. B
   Avogadro's law
3. C
   Raoult's law
4. D
   Henry's law

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

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1. A
   1-chloro-4-methylcyclohexan-2-one
2. B
   2-chloro-3-methylcyclohexanone
3. C
   2-chloro-4-methylcyclohexanone
4. D
   4-methyl-2-chlorocyclohexanone

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1. A
   -COOR
2. B
   -COCl
3. C
   >C=O
4. D
   -CONH₂

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1. A
   NO₂(g)
2. B
   NO(g)
3. C
   SO₂(g)
4. D
   O₂(g)

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1. A
   $0.055$ mol dm⁻³
2. B
   $0.028$ mol dm⁻³
3. C
   $0.083$ mol dm⁻³
4. D
   $0.11$ mol dm⁻³

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