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WBJEE Chemistry Test - 1 - JEE MCQ


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30 Questions MCQ Test - WBJEE Chemistry Test - 1

WBJEE Chemistry Test - 1 for JEE 2024 is part of JEE preparation. The WBJEE Chemistry Test - 1 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Chemistry Test - 1 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Chemistry Test - 1 below.
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WBJEE Chemistry Test - 1 - Question 1
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KMnO₄ reacts with oxalic acid according to the equation : 
2MnO₄ + 5C₂ O₄²⁻ + 16H⁺ →2MN² + 10CO₂ + 8H₂O Here 20 ml. of 0.1 M KMnO₄ is equivalent to ?

Detailed Solution for WBJEE Chemistry Test - 1 - Question 1


Therefore, these are equivalent.

WBJEE Chemistry Test - 1 - Question 2
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The compound 'A' when treated with methyl alcohol and few drops of H₂SO₄ give wintergreen smell. The compound 'A' is

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WBJEE Chemistry Test - 1 - Question 3
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The product acetal is produced by reacting alcohol in the presence of dry HCl with

WBJEE Chemistry Test - 1 - Question 4
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In the borax bead test of Co²⁺,  the blue colour of bead is due to the formation of
WBJEE Chemistry Test - 1 - Question 5
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Which of the nitrates on strong heating leaves the metal as the residue?
WBJEE Chemistry Test - 1 - Question 6
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The total number of possible values of magnetic quantum number for the value of l = 3 is
WBJEE Chemistry Test - 1 - Question 7
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Which has the minimum bond angle?
WBJEE Chemistry Test - 1 - Question 8
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The bromination of benzene in presence of FeBr₃ is an example of
WBJEE Chemistry Test - 1 - Question 9
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A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is
WBJEE Chemistry Test - 1 - Question 10
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When H₂ and I₂ are mixed and equilibrium is attained, then
WBJEE Chemistry Test - 1 - Question 11
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The heats of combustion of carbon and carbon monoxide are −393.5 and −283.5 kJ mol −1, respectively. The heat of formation (in kJ) of carbon monoxide per mole is:
Detailed Solution for WBJEE Chemistry Test - 1 - Question 11

The combustion reactions are as shown.
C+O2​→CO2​ΔH1 = −393.5kJ/mol
CO+0.5O2​→CO2​ΔH2 ​= −283.5kJ/mol
C+0.5O2​→COΔH3​
ΔH3 ​= ΔH1​−ΔH2​
ΔH3​=−393.5kJ/mol
(−283.5kJ/mol) = −110kJ/mol

WBJEE Chemistry Test - 1 - Question 12
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The rate constant for the first and zero reactions in terms of molarity, M units respectively​
WBJEE Chemistry Test - 1 - Question 13
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Latent heat of vaporisation of a liquid at 500 K and 1 atm pressure is 10.0 kcal/mol. What will be the change in internal energy (ΔE) of 3 mol of liquid at same temperature?
Detailed Solution for WBJEE Chemistry Test - 1 - Question 13

Vaporization of 3 moles of H2O vapors is:
3H2O(l) → 3H2O(g)
Δn = 3 - 0 = 3
Therefore,
ΔU = ΔH - ΔnRT
= (3 × 10) - 3 (0.002) (500) = 27
change in internal energy is:
ΔU = 27 Kcal

WBJEE Chemistry Test - 1 - Question 14
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Among the following, the species having square planar geometry for central atom are
1. XeF4
2. SF4
3. [NiCl4]2−
4. [PtCl4]2−
WBJEE Chemistry Test - 1 - Question 15
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Which of the following could act as a propellant for rockets?
WBJEE Chemistry Test - 1 - Question 16
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The IUPAC name of acraldehyde is
WBJEE Chemistry Test - 1 - Question 17
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Froth floatation process is used for the metallurgy of
WBJEE Chemistry Test - 1 - Question 18
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16 gm of oxygen and 3 gm of hydrogen are mixed and kept in 760 mm pressure at 0ºC. The total volume occupied by the mixture will be nearly
WBJEE Chemistry Test - 1 - Question 19
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AlCl₃ on hydrolysis gives
WBJEE Chemistry Test - 1 - Question 20
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SiO2 is reacted with sodium carbonate. What is the gas liberated?
WBJEE Chemistry Test - 1 - Question 21
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Which of the following compound does not exist?
WBJEE Chemistry Test - 1 - Question 22
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Which of the following is not isomeric with diethyl ether?
Detailed Solution for WBJEE Chemistry Test - 1 - Question 22
Dierthylether is C4H10O(C2H5−O−C2H5).
n- propyl methyl ether (CH3−CH2−CH2−O−CH3).
butan−1−ol(CH3−CH2−CH2−CH2OH)
These are isomeric with diethyl ether.
The molecular formula of butanone is different . it is C4H8O.
So these two are not isometers
Hence d is the correct answer.
WBJEE Chemistry Test - 1 - Question 23
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The boiling point of water is exceptionally high because
WBJEE Chemistry Test - 1 - Question 24
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Which is different in isotopes of an element ?
WBJEE Chemistry Test - 1 - Question 25
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'Z' in the following sequence of reactions is

WBJEE Chemistry Test - 1 - Question 26
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Bakelite is obtained from phenol by reacting with
WBJEE Chemistry Test - 1 - Question 27
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A condensation polymer among the following is
WBJEE Chemistry Test - 1 - Question 28
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The oxidation number of Pt in [Pt(C₂H₄)Cl₃]¯ is
Detailed Solution for WBJEE Chemistry Test - 1 - Question 28
Cl is in -1 state. C2H4 should be in 4-2×4= -4 state(as C is assumed to be in excited oxidation state). Therefore if Pt is x state, x-4-3=-1, x=6 but Pt doesn't exist in +6 state. therefore it can be inferred that C is in ground state ie +2 so C2H4 is in 0 oxidation state. The new equation is x-3=-1 so x= +2.
WBJEE Chemistry Test - 1 - Question 29
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Which of the following is an example of body centred cube?
WBJEE Chemistry Test - 1 - Question 30
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Reaction of trans 2-butene with diazomethane in the presence of ultraviolet light, gives :
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