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WBJEE Chemistry Test - 3 - JEE MCQ


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30 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests 2025 - WBJEE Chemistry Test - 3

WBJEE Chemistry Test - 3 for JEE 2024 is part of WBJEE Sample Papers, Section Wise & Full Mock Tests 2025 preparation. The WBJEE Chemistry Test - 3 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Chemistry Test - 3 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Chemistry Test - 3 below.
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WBJEE Chemistry Test - 3 - Question 1

Which one of the following is the weakest Lewis base ?

WBJEE Chemistry Test - 3 - Question 2

R―CH₂―CH₂ ―OH can be converted into RCH₂CH₂COOH by the following sequence of steps

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WBJEE Chemistry Test - 3 - Question 3

Schiff's reagent gives pink colour with

WBJEE Chemistry Test - 3 - Question 4
Which of the nitrates on strong heating leaves the metal as the residue?
WBJEE Chemistry Test - 3 - Question 5
Which of the following does not show electromeric effect?
WBJEE Chemistry Test - 3 - Question 6

Which one of the following molecules has the smallest bond angle?

Detailed Solution for WBJEE Chemistry Test - 3 - Question 6

Molecules      Bond angle
NH3        -       107.2º
PH3        -       93.2º
H2O        -       104.45º
H2Se       -       90.6º
H2S        -       92.1º

WBJEE Chemistry Test - 3 - Question 7
Concentrated nitric acid is added before proceeding to test for group III members. This is to
WBJEE Chemistry Test - 3 - Question 8
What is the maximum number of electrons that can be accommodated in an atom in which the highest principal quantum number value is 4?
WBJEE Chemistry Test - 3 - Question 9
In DNA the complementary beses are
WBJEE Chemistry Test - 3 - Question 10

The heat of formation of the compound in the following reaction is
H₂(g) + Cl(g)→ 2HCl(g)+44 Kcal

WBJEE Chemistry Test - 3 - Question 11
The equilibrium between water and its vapour, in an open-vessel
Detailed Solution for WBJEE Chemistry Test - 3 - Question 11
In an open vessel, the water vapour diffuse into air and therefore, the concentration of water vapour above water surface is negligible.
The reverse process of condensation of vapour into liquid form is almost absent.
Therefore, evaporation process continues, till the entire water changes into vapour form.
Therefore, in an open vessel, the water vapour system is never in equilibrium.
Finally the whole water will diffuse into air as water vapour.
WBJEE Chemistry Test - 3 - Question 12
Parathion is
WBJEE Chemistry Test - 3 - Question 13
In a reaction 2A + B → A₂B, the reactant A will disappear at
WBJEE Chemistry Test - 3 - Question 14
Which of the following is not chiral ?
WBJEE Chemistry Test - 3 - Question 15

What is the entropy change (in J K-1 mol-1), when one mole of ice is converted into water at 0ºC? (The enthalpy change for the conversion of ice to liquid water is 6.0kJ mol-1 at 0ºC)

Detailed Solution for WBJEE Chemistry Test - 3 - Question 15

WBJEE Chemistry Test - 3 - Question 16
A metal M readily forms water soluble sulphate MSO₄. Water becomes inert on heating. The hydroxide is soluble in NaOH. Then M is
WBJEE Chemistry Test - 3 - Question 17
The most stable complex among the following is
WBJEE Chemistry Test - 3 - Question 18
Air at sea level is dense. This is a practical application of
WBJEE Chemistry Test - 3 - Question 19
What is formed when boron is heated with concentrated H₂SO₄?
WBJEE Chemistry Test - 3 - Question 20
Which of the following statement is correct with respect to the property of elements with increase in atomic number in the carbon family(group 14)?
WBJEE Chemistry Test - 3 - Question 21
Among the following hydrides which is more stable
WBJEE Chemistry Test - 3 - Question 22
Which one of the following metals reacts with water at room temperature ?
WBJEE Chemistry Test - 3 - Question 23
The number of optical iosmers of the compound CH₃CHBrCHBrCOOH is
WBJEE Chemistry Test - 3 - Question 24
The radiation which has highest penetrating power is
WBJEE Chemistry Test - 3 - Question 25

Aniline reacts with phosgene and KOH to form

WBJEE Chemistry Test - 3 - Question 26
The product of addition polymerization reaction is
WBJEE Chemistry Test - 3 - Question 27
Which of the following is used for making horses, shoe heels and stoppers?
WBJEE Chemistry Test - 3 - Question 28
The oxidation number of Mn in KMnO₄ is
WBJEE Chemistry Test - 3 - Question 29
In crystal structure of sodium chloride, the arrangement of Cl⁻ ions is
WBJEE Chemistry Test - 3 - Question 30
What is the number of asymmetric carbon atoms present in α-D-glucopyranose molecule ?
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