JEE Advanced ...

JEE Advanced Paper 2 | 2009

Q. The nitrogen oxide(s) that contain(s)

N - N

bonds is/are:

$N_{2} O_{3}$
$N_{2} O$
$N_{2} O_{4}$
$N_{2} O_{5}$

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Q. For a first order reaction

A \to P

, the temperature (T) dependent rate constant

(k)

was found to follow the equation

log k = - (2000) \frac{1}{T} + 6.0

The pre-exponential factor

A

and the activation energy

E_{a}

, respectively, are:

$1.0 \times 10^{6} s^{- 1}$ and $9.2 k J m o 1^{- 1}$
$1.0 \times 10^{6} s^{- 1}$ and $16.6 k J m o 1^{- 1}$
$6.0 s^{- 1}$ and $16.6 k J m o 1^{- 1}$
$1.0 \times 10^{6} s^{- 1}$ and $38.3 k J m o 1^{- 1}$

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Q. In the reaction

2 X + B_{2} H_{6} \to [B H_{2} (X)_{2}]^{+} [B H_{4}]^{-}

, the amine(s)

X

is(are):

$N H_{3}$
$(C H_{3})_{2} N H$
$(C H_{3})_{3} N$
$C H_{3} N H_{2}$

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Q. For the reduction of

N O_{3}^{-}

ion in an aqueous solution,

E^{0} i s + 0.96 V .

Values of

E^{0}

for some metal ions are given below

V^{2 +} (a q) + 2 e^{-} \to V E^{0} = - 1.19 V

F e^{3 +} (a q) + 3 e^{-} \to F e E^{0} = - 0.04 V

A u^{3 +} (a q) + 3 e^{-} \to A u E^{0} = + 1.40 V

H g^{2 +} (a q) + 2 e^{-} \to H g E^{0} = + 0.86 V

The pair(s) metals that is(are) oxidized by

N O_{3}^{-}

in aqueous solution is(are):

$V$ and $H g$
$H g$ and $F e$
$F e$ and $A u$
$F e$ and $V$

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Q. The correct statement(s) about the following sugars

X

and

Y

is(are):

$X$ is a reducing sugar and $Y$ is a non-reducing sugar
$X$ is a non-reducing sugar and $Y$ is a reducing sugar
The glucosidic linkages in $X$ and $Y$ are $α$ and $β$ , respectively
The glucosidic linkages in $X$ and $Y$ are $β$ and $α$ , respectively

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Q. The oxidation number of Mn in the product of alkaline oxidative fusion of

M n O_{2}

is:

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Q. Among the following, the state function(s) is(are):

Irreversible expansion work
Internal energy
Reversible expansion work
Molar enthalpy

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The correct stability order of the following resonance structures is:

H_{2} C = + N = - N (I)

H_{2} + C - N = - N (I I)

H_{2} - C - + N \equiv N (I I I)

H_{2} - C - N = + N (I V)

$(I) > (I I) > (I V) > (I I I)$
$(I) > (I I I) > (I I) > (I V)$
$(I I) > (I) > (I I I) > (I V)$
$(I I I) > (I) > (I V) > (I I)$

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Q. Match each of the reactions given in List 1 with the corresponding product(s) given in List 2.

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Q. The spin only magnetic moment value in Bohr magneton units of

C r (C O)_{6}

is :

$4.90$
$5.92$
$0$
$2.84$

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Q. In the following carbocation.

H / C H_{3}

that is most likely to migrate to the positively charged carbon is:

$C H_{3}$ at $C - 4$
$H$ at $C - 4$
$H$ at $C - 2$
$C H_{3}$ at $C - 2$

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