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JEE Main Chemistry Test- 5 - JEE MCQ


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25 Questions MCQ Test - JEE Main Chemistry Test- 5

JEE Main Chemistry Test- 5 for JEE 2024 is part of JEE preparation. The JEE Main Chemistry Test- 5 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Chemistry 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 Test- 5 below.
Solutions of JEE Main Chemistry Test- 5 questions in English are available as part of our course for JEE & JEE Main Chemistry 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 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 Test- 5 - Question 1
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Crotonaldehyde (CH3CH = CHCHO) can be easily oxidised to crotonic acid (CH3CH = CHCOOH) using 

JEE Main Chemistry Test- 5 - Question 2
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Which of the following aldehydes forms a stable hydrate ? 

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JEE Main Chemistry Test- 5 - Question 3
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When propyne is treated with aqueous H2SO4   in the presence of  HgSO4  , the major product obtained is 

JEE Main Chemistry Test- 5 - Question 4
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The formation of cyanohdyrin from a ketone is an example of
JEE Main Chemistry Test- 5 - Question 5
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An organic compound, C3H6O  does not give a precipitate with 2, 4-dinitrophenylhydrazine reagent and does not react with metallic sodium. It could be
JEE Main Chemistry Test- 5 - Question 6
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The end product ‘C’ in the following sequence of chemical reactions is 
JEE Main Chemistry Test- 5 - Question 7
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The reaction in which sodium cyanide is used is 
JEE Main Chemistry Test- 5 - Question 8
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Aldol condensation will not take place in
JEE Main Chemistry Test- 5 - Question 9
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Calcium formate on dry heating yields
JEE Main Chemistry Test- 5 - Question 10
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Reduction of  to  can be carried out with
JEE Main Chemistry Test- 5 - Question 11
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Identify the compounds A and B in the following reaction sequence.
JEE Main Chemistry Test- 5 - Question 12
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Which of the following has the most acide hydrogen 
Detailed Solution for JEE Main Chemistry Test- 5 - Question 12

2, 4-hexanedione (a 1, 3-diketone) has the most acidic hydrogen. This is because the carbanion left after the removal of H^+ is resonance stabilised in this case. 

JEE Main Chemistry Test- 5 - Question 13
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An organic compound ‘A’ has the molecular formula C3H6O   It undergoes iodoform test. when saturated with HCl, it gives ‘B’of molecular formula C9H14O  ‘A’ and ‘B’ respectively are
JEE Main Chemistry Test- 5 - Question 14
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Acetone is mixed with bleaching powder to give 
JEE Main Chemistry Test- 5 - Question 15
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The dipole moment is the highest for 
JEE Main Chemistry Test- 5 - Question 16
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With which of the following reagents, carbonyl compound shows addition cum elimination reaction ?
JEE Main Chemistry Test- 5 - Question 17
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Self-condensation of ethyl acetate in presence of sodium ethoxide yields 
JEE Main Chemistry Test- 5 - Question 18
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Acetone on distillation with conc. H2SO4  forms 
JEE Main Chemistry Test- 5 - Question 19
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The rate of a gaseous reaction is given by the expression k [A][B]. If the volume of the reaction vessel is suddenly reduced to 1/4th of the initial volume, the reaction rate relting to original rate will be
Detailed Solution for JEE Main Chemistry Test- 5 - Question 19
R=k[A][B]
[Concentration]=moles/volume
moles is constant and volume is reduced to V/4
R=k[n1/V][n2/V]
R2=k[n1/(V/4)][n2/(V/4)]
R2=16R1
R2/R1=16
JEE Main Chemistry Test- 5 - Question 20
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For an endothermic reaction, where represents the enthalpy of the reaction in k.J./mol, the minimum value for the energy of activation will be 
Detailed Solution for JEE Main Chemistry Test- 5 - Question 20
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JEE Main Chemistry Test- 5 - Question 21
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At a certain temperature, the half-life periods for the catalytic decomposition of NH3 were found to be as follows :-
Pressue (mm Hg)         50        100      200
Half-life period (hrs.)   3.52     1.76     0.88
What will be the pressure when the half-life period is 2.5 hours.

Detailed Solution for JEE Main Chemistry Test- 5 - Question 21

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JEE Main Chemistry Test- 5 - Question 22
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How many of the following elements form amphoteric oxides?
Si, P, N, B, Sn, Pb, O

Detailed Solution for JEE Main Chemistry Test- 5 - Question 22

Sn, Pb

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JEE Main Chemistry Test- 5 - Question 23
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One gm of activated carbon has surface area of 1000 m2. Considering complete coverage as well as mono molecular adsorption, how much ammonia at 1 atm and 273 K would be adsorbed on the surface of 44/7 g carbon if radius of ammonia molecule is 10–8 cm (NA = 6 × 1023)

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JEE Main Chemistry Test- 5 - Question 24
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1gm of dry green algae absorbs 5 moles of CO2 per hour by photo synthesis. If fixed carbon atoms were all stored in the form of starch (C6H12O6)n  after photo synthesis then calculate time required ( in sec.) to double the weight of algae.

Detailed Solution for JEE Main Chemistry Test- 5 - Question 24

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JEE Main Chemistry Test- 5 - Question 25
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In the electronic configuration of Zn (Z = 30) find the total number of occupied orbitals which do not possess any nodal plane :-

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