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JEE Main Chemistry Mock Test- 5 - JEE MCQ


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25 Questions MCQ Test Mock Tests for JEE Main and Advanced 2025 - JEE Main Chemistry Mock Test- 5

JEE Main Chemistry Mock Test- 5 for JEE 2024 is part of Mock Tests for JEE Main and Advanced 2025 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.
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JEE Main Chemistry Mock Test- 5 - Question 1

1-Phenylethanol can be prepared by the reaction of benzaldehyde with

JEE Main Chemistry Mock Test- 5 - Question 2

Lucas reagent is

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JEE Main Chemistry Mock Test- 5 - Question 3

Which of the following sequence is correct as per Aufbau principle?

JEE Main Chemistry Mock Test- 5 - Question 4
Which of the following is the least polar molecule?
JEE Main Chemistry Mock Test- 5 - Question 5
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
Which of the following alkyl group has the maximum + I effect?
JEE Main Chemistry Mock Test- 5 - Question 7
Which of the following factors do not favour electrovalency?
JEE Main Chemistry Mock Test- 5 - Question 8
Alkyl groups are o- and p-directing because of
JEE Main Chemistry Mock Test- 5 - Question 9
Glucose reacts with acetic anhydride to form
JEE Main Chemistry Mock Test- 5 - Question 10
Which of the following shows geometrical isomerism ?
JEE Main Chemistry Mock Test- 5 - Question 11
The co-ordination no. of a metal in a co-ordination compounds is
JEE Main Chemistry Mock Test- 5 - Question 12
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

Which is a planar molecule?

JEE Main Chemistry Mock Test- 5 - Question 14
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

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

Sodium nitroprusside reacts with sulphide ion to give a purple colour due to the formation of :

JEE Main Chemistry Mock Test- 5 - Question 16
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
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

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
Electrolysis of molten sodium chloride leads to the formation of
JEE Main Chemistry Mock Test- 5 - Question 20
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

The sum of number of unpaired electrons in
[CoCl6]–3, [Cr(NH3)6]+3, [Zn(NH3)4]+2


*Answer can only contain numeric values
JEE Main Chemistry Mock Test- 5 - Question 22

Sum of number of ions in aqueous solution of CrCl3.5NH3 and CrCl3.4NH3.


*Answer can only contain numeric values
JEE Main Chemistry Mock Test- 5 - Question 23

 

Find the planner species out of the following species
SF2, SF4, SF6, SO2, SO3


*Answer can only contain numeric values
JEE Main Chemistry Mock Test- 5 - Question 24

The total number of contributing structures showing hyperconjugation (involving C–H bonds) for the following carbocation is :


*Answer can only contain numeric values
JEE Main Chemistry Mock Test- 5 - Question 25

How many isomeric amines have the molecular formula C4H11N :


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