WBJEE 2015 (Chemistry – Category 1) Model Test

WBJEE - Chemistry (Category - 1) Model Test

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Start

Congratulations - you have completed WBJEE - Chemistry (Category - 1) Model Test. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

Your answers are highlighted below.

Question 1

The unit of the rate constant for a first order reaction is:

A	sec^-1
B	mol.L^-1.sec^-1
C	L.mol^-1.sec^-1
D	L².mol^-2.sec^-1

Question 2

The state of hybridization of the nitrogen atom bonded to hydrogen in hydrazoic acid (N₃H) is:

A	sp
B	sp²
C	sp³
D	none of these.

Question 3

Which of the following species has the maximum number of unpaired d-electrons?

A	Zn
B	Fe²⁺
C	Ni²⁺
D	Cu⁺

Question 4

(S)-(+)-lactic acid and (R)-(–)-lactic acid are nonsuperposable mirror images of each other. They are called

A	diastereomers
B	tautomers
C	enantiomers
D	structural isomers

Question 5

Which of the following sets of quantum numbers (n,l,m_l,m_s) correctly represents an electron in the 5f subshell?

A	5, 3, 4, +½
B	5, 2, 1, 0
C	5, 3, −2, +½
D	5, 5, 2, −½

Question 6

When a stream of chlorine gas is passed through an aqueous solution of potassium iodide for a long period of time at room temperature

A	the solution turns violet-black
B	the solution throughout remains colourlrss
C	the solution becomes deep brown and then colourless
D	the solution provides a heavy white precipitate

Question 7

Arrange the following in decreasing order of reactivity with HCN. HCHO, CH₃CHO, CH₃COCH₃

A	HCHO > CH₃CHO > CH₃COCH₃
B	CH₃CHO > HCHO > CH₃COCH₃
C	CH₃COCH₃ > CH₃CHO > HCHO
D	CH₃CHO > CH₃COCH₃ > HCHO=

Question 8

The cathode is slowly raised out of the melt by an electrical device during the electrolytic extraction of:

A	sodium
B	magnesium
C	calcium
D	aluminium

Question 9

Deoxyribose is:

A	an aldopentose with four hydroxyl groups
B	a ketopentose with four hydroxyl groups
C	an aldopentose lacking hydroxyl group at carbon-3
D	an aldopentose lacking hydroxyl group at carbon-2

Question 10

A reducing agent

A	loses electrons and is reduced.
B	gains electrons and is reduced.
C	loses electrons and is oxidized.
D	gains electrons and is oxidized

Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results

There are 10 questions to complete.

←

List

→

Return

Shaded items are complete.

1	2	3	4	5
6	7	8	9	10
End

Return

WBJEE 2015 (Chemistry – Category 1) Model Test

WBJEE - Chemistry (Category - 1) Model Test

Categories