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WBJEE Chemistry Test - 4 - JEE MCQ


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30 Questions MCQ Test - WBJEE Chemistry Test - 4

WBJEE Chemistry Test - 4 for JEE 2024 is part of JEE preparation. The WBJEE Chemistry Test - 4 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Chemistry Test - 4 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Chemistry Test - 4 below.
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WBJEE Chemistry Test - 4 - Question 1

Which one of the following is the weakest Lewis base ?

WBJEE Chemistry Test - 4 - Question 2

Phenols are more acidic than alcohols because

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WBJEE Chemistry Test - 4 - Question 3

Acetaldehyde and acetone differ in their reaction with

WBJEE Chemistry Test - 4 - Question 4

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

WBJEE Chemistry Test - 4 - Question 5
Which of the following radicals will not be precipitated by passing H₂S in concentrated acid solution?
WBJEE Chemistry Test - 4 - Question 6
Which of the following is an electrophile?
WBJEE Chemistry Test - 4 - Question 7
Which of the following sets of quantum numbers belongs to highest energy?
WBJEE Chemistry Test - 4 - Question 8

α-Helix is found in

Detailed Solution for WBJEE Chemistry Test - 4 - Question 8

α-Helix is found in proteins. It is a common secondary structure in which a polypeptide chain twists into a right-handed coil. The helix is stabilized by hydrogen bonds between the carbonyl oxygen of each peptide bond and the amide hydrogen of the fourth amino acid residue ahead in the sequence. This type of structure is important for the stability and function of many proteins, including enzymes, antibodies, and structural proteins.

WBJEE Chemistry Test - 4 - Question 9
The molecules BF₃ and NF₃ both are covalent compounds. But BF₃ is non-polar and NF₃ is polar. The reason is that
WBJEE Chemistry Test - 4 - Question 10
Which of the following holds good to the laws of thermodynamics for the reaction,
C₂H₄(g) + 3O₂(g)→2CO₂(g) + 2H₂O(l)
WBJEE Chemistry Test - 4 - Question 11
Which of the following favours the reverse reaction in chemical equilibrium?
WBJEE Chemistry Test - 4 - Question 12
The inversion of cane sugar is represented by C₁₂H₂₂O₁₁ + H₂O → C₆H₁₂O₆ + C₆H₁₂O₆
It is a reaction of
WBJEE Chemistry Test - 4 - Question 13
Which relation is correct?
WBJEE Chemistry Test - 4 - Question 14
The IUPAC name of (CH₃)₂CHCH₂CH₂Cl is
WBJEE Chemistry Test - 4 - Question 15
One of the oxidants used with liquid propellants is
WBJEE Chemistry Test - 4 - Question 16

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

WBJEE Chemistry Test - 4 - Question 17
Calcium is obtained by the
WBJEE Chemistry Test - 4 - Question 18
Wt. of 112 ml oxygen at NTP on liquification would be
WBJEE Chemistry Test - 4 - Question 19
Which is not a mineral of aluminium?
WBJEE Chemistry Test - 4 - Question 20
Which of the following compounds on treatment with dilute mineral acid produces hydrogen peroxide?
WBJEE Chemistry Test - 4 - Question 21
Which of the following has zero dipole moment?
WBJEE Chemistry Test - 4 - Question 22
What may be expeced to happen when phosphine gas is mixed with chlorine gas?
WBJEE Chemistry Test - 4 - Question 23
A mixture of carbon monoxide, hydrogen and hydrocarbons is known as
WBJEE Chemistry Test - 4 - Question 24
A radioisotope has a half-life of 20 hours, after 60 hours the fraction of this isotope remains is
WBJEE Chemistry Test - 4 - 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
WBJEE Chemistry Test - 4 - Question 26
The intermolecular forces of attraction between the polymer chains are weakest in
WBJEE Chemistry Test - 4 - Question 27
On the basis of mode of formation, polymers can be classified
WBJEE Chemistry Test - 4 - Question 28
How many kinds of space lattices are possible in a crystal?
WBJEE Chemistry Test - 4 - Question 29
Ionic addition of bromine to cis-2-butene yields
WBJEE Chemistry Test - 4 - Question 30
In a reaction between zinc and iodine, zinc iodide is formed, what is being oxidised?
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