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JEE Main Chemistry Mock Test- 4 - JEE MCQ


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25 Questions MCQ Test Mock Tests for JEE Main and Advanced 2025 - JEE Main Chemistry Mock Test- 4

JEE Main Chemistry Mock Test- 4 for JEE 2024 is part of Mock Tests for JEE Main and Advanced 2025 preparation. The JEE Main Chemistry Mock Test- 4 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Chemistry Mock Test- 4 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for JEE Main Chemistry Mock Test- 4 below.
Solutions of JEE Main Chemistry Mock Test- 4 questions in English are available as part of our Mock Tests for JEE Main and Advanced 2025 for JEE & JEE Main Chemistry Mock Test- 4 solutions in Hindi for Mock Tests for JEE Main and Advanced 2025 course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt JEE Main Chemistry Mock Test- 4 | 25 questions in 60 minutes | Mock test for JEE preparation | Free important questions MCQ to study Mock Tests for JEE Main and Advanced 2025 for JEE Exam | Download free PDF with solutions
JEE Main Chemistry Mock Test- 4 - Question 1
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Phenol can be distinguished from ethyl alcohol by all reagents except

Detailed Solution for JEE Main Chemistry Mock Test- 4 - Question 1
Phenol reacts with NaOH, doesn't give Bromine water test but alchohol give Bromine water test and don't react with NaOH as pKa of alchohol is more than that of H2O but Na reacts with both phenol and alchohol so Na doesn't distinguish phenol and alchohol. hence D is correct
JEE Main Chemistry Mock Test- 4 - Question 2
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1-Phenylethanol can be prepared by the reaction of benzaldehyde with

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JEE Main Chemistry Mock Test- 4 - Question 3
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If R is the Rydberg constant for hydrogen, then wave-number of the second line in the Lyman series is

Detailed Solution for JEE Main Chemistry Mock Test- 4 - Question 3

Wave no = 1/λ =R[1/n12 -1/n22]=R[1/12 -1/22]=3R/4.(For Lyman series n1=1)

JEE Main Chemistry Mock Test- 4 - Question 4
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The ratio of specific charge of a proton and an α-particle is
JEE Main Chemistry Mock Test- 4 - Question 5
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which of the following hybridisation occurs in the formation of methane molecule?
JEE Main Chemistry Mock Test- 4 - Question 6
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Electrophiles are
JEE Main Chemistry Mock Test- 4 - Question 7
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Acetic acid is produced with the help of
JEE Main Chemistry Mock Test- 4 - Question 8
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Structurally, which of the following are similar ions?
JEE Main Chemistry Mock Test- 4 - Question 9
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The molecule having bond order 3 is
JEE Main Chemistry Mock Test- 4 - Question 10
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Tautomerism is exhibited by
JEE Main Chemistry Mock Test- 4 - Question 11
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Which of the following is not a π bonded complex?
JEE Main Chemistry Mock Test- 4 - Question 12
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Which of the following has highest molar conductivity?
JEE Main Chemistry Mock Test- 4 - Question 13
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An aqueous solution of CoCl₂ on addition of excess of concentrated HCl, turns blue due to the formation of
JEE Main Chemistry Mock Test- 4 - Question 14
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Noble gases are
JEE Main Chemistry Mock Test- 4 - Question 15
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Which of the following will act as Lewis base, nucleophilic reagent as well as ligand in complex compound ?
JEE Main Chemistry Mock Test- 4 - Question 16
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Which of the following exhibit geometrical isomerism?
JEE Main Chemistry Mock Test- 4 - Question 17
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Which of the following is obtained when chloral is boiled with NaOH?
JEE Main Chemistry Mock Test- 4 - Question 18
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Effective nuclear charge in case of an ion is equal to-
JEE Main Chemistry Mock Test- 4 - Question 19
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Bakelite is prepared from
JEE Main Chemistry Mock Test- 4 - Question 20
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K, Ca and Li metals may be arranged in the decreasing order of their standard electrode potentials as
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JEE Main Chemistry Mock Test- 4 - Question 21
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Nitric oxide is formed in the combustion of fuel. An internal combustion engine produces 600 ppm (600 mg L–1) of NO. 100 L of air containing the produced NO was oxidised to NO2. The NO2 formed was dissolved in 10 L of water. The pH of the resulting solution is (log 2 = 0.30, log 3 = 0.48)

Detailed Solution for JEE Main Chemistry Mock Test- 4 - Question 21

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JEE Main Chemistry Mock Test- 4 - Question 22
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A thin circular-disk earrings 10.0 cm in diameter is plated with a coating of gold 0.20 mm thick from an Au3+ bath. How many days (approx.) does it take to deposit the gold on one side of one earring if the current is 0.193 ampere. 
(Au = 197, density of Au = 19.7 g/cm3, 1 F = 96500 C, 86400 = 27500 p)

Detailed Solution for JEE Main Chemistry Mock Test- 4 - Question 22

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JEE Main Chemistry Mock Test- 4 - Question 23
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Consider the following orders given below.
(i) S > Se > Te > O (Electron Affinity)
(ii) N–3 > O2– > F– > Na+ > Mg2+ (Ionic Size)
(iii) Fe2+ > Fe3+ > Fe4+ (Ionization Enthalpy)
(iv) H < B < P < C < Cl (Electronegativity)
(v) Na+ < Mg2+ < Al3+ (Extent of hydration)
(vi) Li > Na > K > Rb > Cs (Reducing Nature)
(vii) LiF(s) > LiCl(s) > LiBr(s) (Lattice Energy)
If x = number of correct orders
   y = number of incorrect orders
then the value of (1 + y/x) is.

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JEE Main Chemistry Mock Test- 4 - Question 24
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Among the following oxides
Cr2O3, V2O5, FeO, Mn2O7, ZnO, Cu2O, MnO2, CrO3, NiO
If x = number of basic oxides
   y = number of acidic oxides
   z = number of amphoteric oxides
then the value of (x + y)/z is

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JEE Main Chemistry Mock Test- 4 - Question 25
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How many hydrogen atom(s) is/are present in precipitate (P)?

Detailed Solution for JEE Main Chemistry Mock Test- 4 - Question 25

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