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JEE Main Chemistry Mock Test- 5 - JEE MCQ


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25 Questions MCQ Test - JEE Main Chemistry Mock Test- 5

JEE Main Chemistry Mock Test- 5 for JEE 2024 is part of JEE preparation. The JEE Main Chemistry Mock Test- 5 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Chemistry Mock Test- 5 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- 5 below.
Solutions of JEE Main Chemistry Mock Test- 5 questions in English are available as part of our course for JEE & JEE Main Chemistry Mock Test- 5 solutions in Hindi for JEE 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- 5 | 25 questions in 60 minutes | Mock test for JEE preparation | Free important questions MCQ to study for JEE Exam | Download free PDF with solutions
JEE Main Chemistry Mock Test- 5 - Question 1
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1-Phenylethanol can be prepared by the reaction of benzaldehyde with

JEE Main Chemistry Mock Test- 5 - Question 2
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Lucas reagent is

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JEE Main Chemistry Mock Test- 5 - Question 3
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Which of the following sequence is correct as per Aufbau principle?

JEE Main Chemistry Mock Test- 5 - Question 4
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Which of the following is the least polar molecule?
JEE Main Chemistry Mock Test- 5 - Question 5
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Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers, l = 1 and 2 are, respectively :
JEE Main Chemistry Mock Test- 5 - Question 6
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Which of the following alkyl group has the maximum + I effect?
JEE Main Chemistry Mock Test- 5 - Question 7
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Which of the following factors do not favour electrovalency?
JEE Main Chemistry Mock Test- 5 - Question 8
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Alkyl groups are o- and p-directing because of
JEE Main Chemistry Mock Test- 5 - Question 9
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Glucose reacts with acetic anhydride to form
JEE Main Chemistry Mock Test- 5 - Question 10
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Which of the following shows geometrical isomerism ?
JEE Main Chemistry Mock Test- 5 - Question 11
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The co-ordination no. of a metal in a co-ordination compounds is
JEE Main Chemistry Mock Test- 5 - Question 12
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Four successive members of the first row transition elements are listed below with their atomic no. Which of them is expected to have the highest third ionisation enthalpy?
JEE Main Chemistry Mock Test- 5 - Question 13
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Which is a planar molecule?
JEE Main Chemistry Mock Test- 5 - Question 14
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In decinormal solution, CH₃COOH acid is ionised to the extent of 1.3%. If log 1.3=0.11. What is the pH of the solution?
Detailed Solution for JEE Main Chemistry Mock Test- 5 - Question 14
The dissociation of acetic acid is:

CH3COOH →  CH3COO- + H+

c – cα  cα
cα

Concentration = 0.1 M

Degree of ionization, α = 1.3 %  

c α = (0.1) * (1.3* 10^-2)  

[H +]=1.3 * 10^-3

pH can be determined as:

-log (H^+) = pH = - log (1.3 * 10^-3) = 2.87

Thus the pH of the solution is 2.87
JEE Main Chemistry Mock Test- 5 - Question 15
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Sodium nitroprusside reacts with sulphide ion to give a purple colour due to the formation of :
JEE Main Chemistry Mock Test- 5 - Question 16
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Which are isomers?
Detailed Solution for JEE Main Chemistry Mock Test- 5 - Question 16
Isomers are molecules that have the same molecular formula, but have a different arrangement of the atoms in space. That excludes any different arrangements which are simply due to the molecule rotating as a whole, or rotating about particular bonds. For example, both of the following are the same molecule.
JEE Main Chemistry Mock Test- 5 - Question 17
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Chlorination of toluene with excess of chlorine in the presence of light and heat followed by treatment with aqueous NaOH gives
JEE Main Chemistry Mock Test- 5 - Question 18
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In a polymer 30% molecules have molecular weight 20,000, 40% molecules have molecular weight 30,000 and the rest 30% molecules have molecular weight 60000. The weight average molecular weight of the polymer is
JEE Main Chemistry Mock Test- 5 - Question 19
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Electrolysis of molten sodium chloride leads to the formation of
JEE Main Chemistry Mock Test- 5 - Question 20
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In acidic medium dichromate ion oxidizes ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is 294 grams, its gram equivalent weight is....grams.
Detailed Solution for JEE Main Chemistry Mock Test- 5 - Question 20
*Answer can only contain numeric values
JEE Main Chemistry Mock Test- 5 - Question 21
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The sum of number of unpaired electrons in
[CoCl6]–3, [Cr(NH3)6]+3, [Zn(NH3)4]+2

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JEE Main Chemistry Mock Test- 5 - Question 22
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Sum of number of ions in aqueous solution of CrCl3.5NH3 and CrCl3.4NH3.

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JEE Main Chemistry Mock Test- 5 - Question 23
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Find the planner species out of the following species
SF2, SF4, SF6, SO2, SO3

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JEE Main Chemistry Mock Test- 5 - Question 24
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The total number of contributing structures showing hyperconjugation (involving C–H bonds) for the following carbocation is :

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JEE Main Chemistry Mock Test- 5 - Question 25
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How many isomeric amines have the molecular formula C4H11N :

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