WBJEE 2013 (Chemistry – Category 2) Model Test

WBJEE - Chemistry (Category - 2) Model Test

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Congratulations - you have completed WBJEE - Chemistry (Category - 2) Model Test. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

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Question 1

Arrange the following in increasing order of nucleophilic addition reaction: Acetophenone, p-tolualdehyde, p-nitrobenzaldehyde, Benzaldehyde

A	Acetophenone < p- Tolualdehyde < Benzaldehyde < p-Nitro benzaldehyde
B	Acetophenone > Benzaldehyde > p- Tolualdehyde > p-Nitro benzaldehyde
C	Acetophenone < Benzaldehyde < p- Tolualdehyde < p-Nitro benzaldehyde
D	Acetophenone > p- Tolualdehyde > Benzaldehyde > p-Nitro benzaldehyde

Question 2

If 5g of sample of bleaching powder liberates 574 ml of chlorine gas at NTP with dilute HCL, the percentage of available chlorine in the given sample is [Ca = 40, Cl = 35.5]:

A	18.19
B	11.48
C	36.38
D	28.70

Question 3

Which of the following is the correct option for free expansion of an ideal gas under adiabatic conditions?

A	q=0, T < 0, w≠0
B	q≠0, T = 0, w=0
C	q=0, T ≠ 0, w=0
D	q=0, T = 0, w=0

Question 4

The value of the electromotive force for the following cell Zn | ZnSO4 (0.05 M) || ZnSO4 (0.5 M) | Zn at 298 K is

A	0.059
B	0.0295
C	-0.059
D	-0.0295

Question 5

Calculate the number of aluminium ions present in 0.51 gm of aluminium oxide.

A	6.02 x 10²¹
B	3.01 x 10²¹
C	3.01 x 10²²
D	6.02 x 10²²

Question 6

The coefficients on the L.H.S for the reactants and the R.H.S for the products in the balanced form of the reaction MnO₄^{^-} + Mn²⁺ + H₂O → MnO₂ + H⁺ should be:

A	2,3,2 and 5,4
B	2,3,5 and 5,10
C	3,2,3 and 5,4
D	2,2,2 and 5,10

Question 7

The vapour pressure of pure water at 28° C is 28.35 torr. The vapour pressure of a solution containing 68.4 kg of cane sugar in 1000 g of water at the same temperature will be:

A	28.34 torr
B	28.24 torr
C	25.24 torr
D	26.44 torr

Question 8

Preparation of pentaerythritol from acetaldehyde and formaldehyde requires:

A	first Claisen condensation and then aldol condensation
B	first Perkin reaction and then haloform reaction
C	first aldol condensation and then Cannizaro reaction
D	none of these

Question 9

Four metals A, B, C and D have E° values: – 0.76 V, 0.34 V, –2.13 V and 0.44 V respectively. What is the correct order of their increasing oxidizing power?

A	A > B > C > D
B	D > B > A > C
C	D > A > B > C
D	C> D > A > B

Question 10

A compound that behaves like a monobasic acid as well as an inorganic ester is:

A	ethyl hydrogen phthalate
B	potassium hydrogen tartarate
C	trimethyl oxonium tetrafluoroborate
D	ethyl hydrogen sulphate

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WBJEE 2013 (Chemistry – Category 2) Model Test

WBJEE - Chemistry (Category - 2) Model Test

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