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JEE Main Chemistry Mock Test- 6 - JEE MCQ


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25 Questions MCQ Test - JEE Main Chemistry Mock Test- 6

JEE Main Chemistry Mock Test- 6 for JEE 2024 is part of JEE preparation. The JEE Main Chemistry Mock Test- 6 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Chemistry Mock Test- 6 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- 6 below.
Solutions of JEE Main Chemistry Mock Test- 6 questions in English are available as part of our course for JEE & JEE Main Chemistry Mock Test- 6 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- 6 | 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- 6 - Question 1
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An organic liquid A containing C, H and O has a pleasant odour with a boiling point of 78oC. On boiling A with conc. H₂SO₄ a colourless gas is produced which decolourises bromine water and alkaline KMnO₄. One mole of this gas also takes one mole of H₂ . The organic liquid A is

JEE Main Chemistry Mock Test- 6 - Question 2
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Trioxane is trimer of

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JEE Main Chemistry Mock Test- 6 - Question 3
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The enzymes with two sites are called

JEE Main Chemistry Mock Test- 6 - Question 4
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In a reversible reaction, two substances are in equilibrium. If the concentration of each one is reduced to half, the equilibrium constant will be
JEE Main Chemistry Mock Test- 6 - Question 5
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Which of the following compound gives dye test ?
JEE Main Chemistry Mock Test- 6 - Question 6
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The unit ohm-1 is used for
JEE Main Chemistry Mock Test- 6 - Question 7
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The study of chemical reaction, which takes place by the absorption of light, is called
JEE Main Chemistry Mock Test- 6 - Question 8
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Given that
(i) C + O₂ → CO₂ ; ∆Ho = − xkJ,
(ii) 2CO + O₂ → 2CO₂ ; ∆Ho = −ykJ .
The enthalpy of formation of carbon monoxide will be
JEE Main Chemistry Mock Test- 6 - Question 9
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Which of the following compounds is not coloured?
Detailed Solution for JEE Main Chemistry Mock Test- 6 - Question 9
It is an inner orbital complex and so does not show d-d transition or any other (like metal to ligand) electronic transition, hence it is colorless.
JEE Main Chemistry Mock Test- 6 - Question 10
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O2- and Si+4 are isoelectronic ions. If the ionic radius of O2- is 1.4 Å , the ionic radius of Si+4 will be
Detailed Solution for JEE Main Chemistry Mock Test- 6 - Question 10
Isoelectronic species: A group of ions, atoms, or molecules that have the same number of electrons.
As the number of electrons in an atom decreases, the effective nuclear charge and attractive force on the outer electrons increases whereas if the number of electrons increases, the effective nuclear charge decreases.Thus, among the isoelectronic species, the one which has more number of electrons has a larger ionic radius and the one which has less number of electrons has a smaller ionic radius.
JEE Main Chemistry Mock Test- 6 - Question 11
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The charge required to liberate 11.5 g sodium from fused sodium chloride is
JEE Main Chemistry Mock Test- 6 - Question 12
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Choose the solution with lowest pH value
JEE Main Chemistry Mock Test- 6 - Question 13
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The conjugate acid of NH₃ is
JEE Main Chemistry Mock Test- 6 - Question 14
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Neutralization of an acid with a base, invariably results in the production of
JEE Main Chemistry Mock Test- 6 - Question 15
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At 25oC, the value of a solution is 6. The solution is
JEE Main Chemistry Mock Test- 6 - Question 16
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Oxidation of toluene with CrO3 in the presence of (CH3CO)2O gives a product (A) which on treatment with aqueous NaOH produces
Detailed Solution for JEE Main Chemistry Mock Test- 6 - Question 16
JEE Main Chemistry Mock Test- 6 - Question 17
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In the following, electrophile is:
HO ― NO2 
JEE Main Chemistry Mock Test- 6 - Question 18
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Teflon is a polymer, monomer of which is
JEE Main Chemistry Mock Test- 6 - Question 19
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A NaCl crystal is found to have CsCl structure. How it might have happened?
JEE Main Chemistry Mock Test- 6 - Question 20
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Gobar gas mainly contains
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JEE Main Chemistry Mock Test- 6 - Question 21
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Number of pyrimidine bases present both in DNA and RNA :

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JEE Main Chemistry Mock Test- 6 - Question 22
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The equilibrium constant for the reaction,
CO (g) + H2O (g) ⇋ CO2 (g) + H2 (g)
is 5. How many moles of CO2 must be added to 1 litres container already containing 3 moles each of CO & H2O to make 2M equilibrium concentration of CO?

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JEE Main Chemistry Mock Test- 6 - Question 23
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Density of dry air containing only N2 and O2 is 1.15 g/lit at 740 mm and 300 K. What is % composition of N2 by weight in the air?

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JEE Main Chemistry Mock Test- 6 - Question 24
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What atomic number of an element 'X' would have to become so that the 4th orbit around X would fit inside the 1st Bohr orbit of H atom?

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JEE Main Chemistry Mock Test- 6 - Question 25
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The most probable speed of 8 gm of H2 is 200 m/s avg. kinetic energy of H2 gas is:-

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