WBJEE Chemistry Test - 10


40 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests | WBJEE Chemistry Test - 10


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Attempt WBJEE Chemistry Test - 10 | 40 questions in 60 minutes | Mock test for JEE preparation | Free important questions MCQ to study WBJEE Sample Papers, Section Wise & Full Mock Tests for JEE Exam | Download free PDF with solutions
QUESTION: 1

Which one of the following is the weakest Lewis base ?

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QUESTION: 2

The product acetal is produced by reacting alcohol in the presence of dry HCl with

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QUESTION: 3

Phenols are more acidic than alcohols because

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QUESTION: 4
Ions of Ca, Ba and Sr precipitate in fifth group as their
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QUESTION: 5
Electrophiles are
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QUESTION: 6
Molisch test is given by
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QUESTION: 7

If r is the radius of first orbit, the radius of nth orbit of the H atom will be

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QUESTION: 8
Concentrated nitric acid is added before proceeding to test for group III members. This is to
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QUESTION: 9
The bond order in O₂⁺ is
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QUESTION: 10
Which among the following is not a state function ?
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QUESTION: 11
Which of the following favours the backward reaction in a chemical equilibrium?
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QUESTION: 12

To calculate the amount of work done in Joules during a reversible isothermal expansion of an ideal gas, the volume must be expressed in

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QUESTION: 13
The reaction 2H₂O₂ → 2H₂O + O₂ is, r= k[H₂O₂]
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QUESTION: 14
Azo dyes are prepared from
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QUESTION: 15
The IUPAC name of (CH₃)₂CHCH₂CH₂Cl is
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QUESTION: 16
Which of the following is a complex salt?
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QUESTION: 17
Which of the following is a carbonate ore?
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QUESTION: 18
Which of the following mixture of gases does not obey Dalton's law of partial pressure ?
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QUESTION: 19

The electronic configuration of group III elements is

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QUESTION: 20
Which of the following melts in boiling water?
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QUESTION: 21
What is the order of basic nature of hydrides of group V elements ?
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QUESTION: 22

The H-O-H bond angle in H₂O molecule is

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QUESTION: 23
Isomers of propionic acid are
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QUESTION: 24
Which of the following is a man-made element ?
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QUESTION: 25
If 50 molecules of a polymer contain molecular weight 500 each. 20 molecules contain molecular weight 200 each and 30 molecules contain molecular weight 300 each then their no. average molecular weight of the polymer is
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QUESTION: 26
Synthetic rubber (Neoprene) is
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QUESTION: 27
Which of the following has the same oxidation state as that of Cr in K₂CrO₃
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QUESTION: 28
Which one gives carbylamine reaction ?
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QUESTION: 29
In a metal 'M' having BCC arrangement, edge length of the unit cell is 400 pm. The atomic radius of M is
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QUESTION: 30
Consider the following statements about dimethyl cyclohexanes :
1. trans-1,2-dimethylcyclohexane is more stable than the corresponding cis-isomer
2. cis-1,3-dimethylcyclohexane is an optically inactive meso form
3. trans-1,3-dimethylcyclohexane is more stable than the corresponding cis-isomer
4. cis-1,2-dimethylcyclohexane is an unresolvable racemic mixture
Which of the statements given above are correct ?
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QUESTION: 31

Among the following metal carbonyls, the C ― O bond order is lowest in

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An anionic carbonyl complex can delocalise more electron density to antibonding π - orbital (dπ - pπ back -bonding) of CO and thus lower the bond order.

QUESTION: 32

The IUPAC name of [Ni(NH3)4] [NiCl4] is

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As per the rules, the positive ions (cation) whether simple or complex, is named first followed by the negative ion (anion).

QUESTION: 33

Which of the following will have fastest rate of reaction with Br₂/FeBr₃?

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QUESTION: 34

In context with the industrial preparation of hydrogen from water gas (CO + H₂) , which of the following is the correct statement ?

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QUESTION: 35

The bond dissociation energy of BF in BF3 is 646 kJ mol-1 whereas that of CF in CF4 is 515 kJ mol-1. The correct reason for higher BF bond dissociation energy as compared to that of C ― F is

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QUESTION: 36

Which aromatic acid(s) among the following is/are stronger acid than simple benzoic acid ?

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*Multiple options can be correct
QUESTION: 37

The molecules that will have dipole moment are:

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QUESTION: 38

Statements that are true about Wilkinson's catalyst are:

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QUESTION: 39

When HCl(g) is passed through a saturated solution of common salt, pure NaCl is precipitated because

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QUESTION: 40

Phosphorous pentachloride reacts with

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