WBJEE Chemistry Test - 4


40 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests | WBJEE Chemistry Test - 4


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Attempt WBJEE Chemistry Test - 4 | 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

Phenols are more acidic than alcohols because

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QUESTION: 3

Acetaldehyde and acetone differ in their reaction with

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QUESTION: 4

In which of the following solvents, AgBr will have the highest solubility?

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QUESTION: 5
Which of the following radicals will not be precipitated by passing H₂S in concentrated acid solution?
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QUESTION: 6
Which of the following is an electrophile?
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QUESTION: 7
α-Helix is found in
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QUESTION: 8
Which of the following sets of quantum numbers belongs to highest energy?
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QUESTION: 9
The molecules BF₃ and NF₃ both are covalent compounds. But BF₃ is non-polar and NF₃ is polar. The reason is that
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QUESTION: 10
Which of the following holds good to the laws of thermodynamics for the reaction,
C₂H₄(g) + 3O₂(g)→2CO₂(g) + 2H₂O(l)
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QUESTION: 11
Which of the following favours the reverse reaction in chemical equilibrium?
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QUESTION: 12
The inversion of cane sugar is represented by C₁₂H₂₂O₁₁ + H₂O → C₆H₁₂O₆ + C₆H₁₂O₆
It is a reaction of
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QUESTION: 13
One of the oxidants used with liquid propellants is
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QUESTION: 14
Which relation is correct?
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QUESTION: 15
The IUPAC name of (CH₃)₂CHCH₂CH₂Cl is
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QUESTION: 16

Which of the following has largest number of isomers? (R is alkyl group, en is ethylediamine)

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QUESTION: 17
Wt. of 112 ml oxygen at NTP on liquification would be
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QUESTION: 18
Calcium is obtained by the
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QUESTION: 19
Which is not a mineral of aluminium?
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QUESTION: 20
Which of the following has zero dipole moment?
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QUESTION: 21
Which of the following compounds on treatment with dilute mineral acid produces hydrogen peroxide?
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QUESTION: 22
A mixture of carbon monoxide, hydrogen and hydrocarbons is known as
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QUESTION: 23
What may be expeced to happen when phosphine gas is mixed with chlorine gas?
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QUESTION: 24
A radioisotope has a half-life of 20 hours, after 60 hours the fraction of this isotope remains is
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QUESTION: 25
Which of the following chemicals are used to manufacture methyl isocyanate that caused "Bhopal Tragedy " ? (a) Methyl amine (b) Phosgene (c) Phosphine (d) Dimethyl amine
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QUESTION: 26
The intermolecular forces of attraction between the polymer chains are weakest in
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QUESTION: 27
On the basis of mode of formation, polymers can be classified
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QUESTION: 28
How many kinds of space lattices are possible in a crystal?
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QUESTION: 29
Ionic addition of bromine to cis-2-butene yields
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QUESTION: 30
In a reaction between zinc and iodine, zinc iodide is formed, what is being oxidised?
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QUESTION: 31

Aniline reacts with KOH and phosgene to form

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QUESTION: 32

Monomer of

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QUESTION: 33

The species having bond order different from that in CO is

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QUESTION: 34

Which set of products is expected on reductive ozonolysis of the following diolefin?

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QUESTION: 35

Among the following, the coloured compound is

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*Multiple options can be correct
QUESTION: 36

Which of the following statement(s) is (are) correct.
When a mixture of NaCl and K2Cr2O7 is gently warmed with conc. H2SO4 ?

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*Multiple options can be correct
QUESTION: 37

For the reduction of N O 3 − ion in an aqueous solution, E0 is +0.96 V. Values of E0 for some metal ions are given below

The pair(s) of metals that is(are) oxidized by NO3 in aqueous solution is(are)

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*Multiple options can be correct
QUESTION: 38

CO2 is isostructural with:

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*Multiple options can be correct
QUESTION: 39

Tin (IV) chloride is

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*Multiple options can be correct
QUESTION: 40

Which possess fractional bond order?

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