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Class 12 Chemistry Questions asked by Filo students

Views: 5,936

What will be the percentage of dimerization of

61 g

. of benzoic acid in

1000 g

. of a solvent and producing a depression in freezing point of

2^{\circ} C

K_{1}

to be 6 . (J \& K CET 2018)

$72%$
$67%$
$43%$
$28%$

Topic:

Gases & Solutions

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Views: 5,698

1 gg

(C_{6} H_{12} O_{6})

is added Vapour pressure) of water (in tors) for mis 1 aqueons soluteri oet

$λ 6, 0$
$752.4$ ::. $759.0$
$7 \cdot 6$

Topic:

Mole Concept & Redox

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Views: 5,716

Second nearest neighbour of

Cl^{-}

CsCl

8
6
16
10

Topic:

Solid State

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Views: 5,179

The major product of the following reaction is

Topic:

Aldehydes & Ketones

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Views: 5,761

The correct IUPAC name of the compound is

4-formyl-2-oxocyclohexanecarboxylic acid
4-carboxy-2-oxocyclohexanal
4-carboxy-1-formylcyclohexanone
2-carboxy-5-formyl-1-oxocyclohexane.

Topic:

General Organic Chemistry

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Views: 5,801

1.0

molal solution with the lowest freezing point is that of :

$FeCl_{3}$
$KCl$
$HCl$
$MgCl_{2}$ .

Topic:

Gases & Solutions

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Views: 5,267

Match the compounds given in column I IUPAC names given in column II and Whth

_{Hhe}

appropriate choice. Column I

Topic:

General Organic Chemistry

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Views: 5,405

vajwir a XIP. What will be the vapour density of ihe substande? (Density of

H_{2} = 0.089 g / L

$95.93$
$59.93$
$95/39$
$5.993$

Topic:

Mole Concept & Redox

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Views: 5,582

5 vapour a Xip. What will be ihe vapour ies

45 mL

. vapøur an XIP. What will be ihe vapour density of ihe substande? (Density of

H_{2} = 0.089 g / L

$95.93$
$59.93$
95,39
$5.993$

Topic:

Mole Concept & Redox

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Question 10

Views: 5,202

What is the product of the following reaction?

::
Both (a) and (b)
Neither (a) nor (b)

Topic:

Alkyl Halide

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Question 11

Views: 5,355

60 g

of non-electrolyte \&p non - volatile solecte is added to

180 g

of pure water due to tuis v.p. reduce from

300 mm

290 mm

m

massof solute. sol

\frac{300 - 290}{300} = \frac{n}{n + 10}

Topic:

Gases & Solutions

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Question 12

Views: 5,686

Compounds Containing Nitrogen 13. Vapour phase nitration of propane produces how many products

1
2
3
4

Topic:

Qualitative Analysis

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Question 13

Views: 5,129

Which is optically active molecule :-

Topic:

General Organic Chemistry

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Question 14

Views: 5,087

A

B

have vapour pressure in the ratio

P_{A}^{\circ} : P_{B}^{\circ} = 1 : 3

at a certain temperature. Assume

A

B

form an ideal solution and the ratio of mole fractions of

A

B

in the vapour phase is

4 : 3

. Then the mole fraction of

B

in the solution at the same temperature is :

$\frac{1}{5}$
$\frac{2}{3}$
$\frac{4}{5}$
$\frac{1}{4}$

Topic:

Gases & Solutions

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Question 15

Views: 5,396

19. Choose the one compound within each set that meets the indicated criterion :

Topic:

Alkyl Halide

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Question 16

Views: 5,960

The order of reaction is decided by

temperature
mechanism of reaction as well as relative concentration of reactants
molecularity
pressure.

Topic:

Chemical Kinetics

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Question 17

Views: 5,096

Which of the following statements for order of reaction is not correct?

Order can be determined experimentally.
Order of reaction is equal to the sum of powers of concentration terms in rate law expression.
Order cannot be fractional.
Order is not affected by stoichiometric coefficient of the reactants.

Topic:

Chemical Kinetics

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Question 18

Views: 5,336

What will be the rate equation for the reaction

2 X + Y \to Z

, if the order of the reaction is zero?

Rate $= k [X] [Y]$
Rate $= k$
Rate $= k [X]^{0} [Y]$
Rate $= k [X] [Y]^{0}$

Topic:

Chemical Kinetics

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Question 19

Views: 5,115

For a reaction,

I^{-} + OCl^{-} \to IO^{-} + Cl^{-}

in an aqueous medium, the rate of reaction is given by

\frac{d [ IO ^{-} ]}{d t} = k \frac{[ I ^{-} ] [ OCl ^{-} ]}{[ OH ^{-} ]}

. The overall order of reaction is

$- 1$
0
1
2

Topic:

Chemical Kinetics

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Question 20

Views: 5,304

(A) \to (

\to

\to

(b) $(A) \to (i), (B) \to (B) \to$ (iv), (C) $\to$ (C) $(C)$
(d) (A) $\to$ (iii), (B) $\to$ (iv), (C) benzene compounds is not correct?",(a)
(b) 4-ethy1-2-methylaniline

Topic:

General Organic Chemistry

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