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JEE Main Chemistry Test- 7 - JEE MCQ


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25 Questions MCQ Test Mock Tests for JEE Main and Advanced 2024 - JEE Main Chemistry Test- 7

JEE Main Chemistry Test- 7 for JEE 2024 is part of Mock Tests for JEE Main and Advanced 2024 preparation. The JEE Main Chemistry Test- 7 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Chemistry Test- 7 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for JEE Main Chemistry Test- 7 below.
Solutions of JEE Main Chemistry Test- 7 questions in English are available as part of our Mock Tests for JEE Main and Advanced 2024 for JEE & JEE Main Chemistry Test- 7 solutions in Hindi for Mock Tests for JEE Main and Advanced 2024 course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt JEE Main Chemistry Test- 7 | 25 questions in 60 minutes | Mock test for JEE preparation | Free important questions MCQ to study Mock Tests for JEE Main and Advanced 2024 for JEE Exam | Download free PDF with solutions
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JEE Main Chemistry Test- 7 - Question 1

To which class of compounds do enzymes usually belong ?

Detailed Solution for JEE Main Chemistry Test- 7 - Question 1
Among the organic macromolecules, enzymes belong in the category of proteins. Proteins are distinct from carbohydrates, nucleic acids and lipids in that a protein is made of amino acids. Amino acids link together into a chain that can fold into a three-dimensional shape.
JEE Main Chemistry Test- 7 - Question 2

Which of the following enzymes is present in saliva?

JEE Main Chemistry Test- 7 - Question 3

Night-blindness may develop due to the defciency of

JEE Main Chemistry Test- 7 - Question 4
The reaction is an example of
JEE Main Chemistry Test- 7 - Question 5
Van der Waals force is the strongest in
JEE Main Chemistry Test- 7 - Question 6

reacts with concetrated HCl to produce

JEE Main Chemistry Test- 7 - Question 7

XeF4 is prepared by heating Xe and F2 at 400oC in the ratio of

JEE Main Chemistry Test- 7 - Question 8
reacts violently with water to give
JEE Main Chemistry Test- 7 - Question 9
Xenon trioxide has a
JEE Main Chemistry Test- 7 - Question 10
The chemical name of aspirin is
JEE Main Chemistry Test- 7 - Question 11
Chlorampehnicol is used as an
JEE Main Chemistry Test- 7 - Question 12
Phenol is commonly used as
JEE Main Chemistry Test- 7 - Question 13
Which of the following is not a natural polymer ?
JEE Main Chemistry Test- 7 - Question 14
Natural rubber is a polymer of
JEE Main Chemistry Test- 7 - Question 15
Orlon in obtained by the polymerization of
JEE Main Chemistry Test- 7 - Question 16
Glyptal, a highly cross-linked rigid thermosetting resin,is prepared by heating
JEE Main Chemistry Test- 7 - Question 17
The polymer obtained by condensation polymerization is
JEE Main Chemistry Test- 7 - Question 18

Which of the following polymer type is not classified on the basis of its application and properties?

Detailed Solution for JEE Main Chemistry Test- 7 - Question 18

Synthetic polymers are classified on the basis of their origin and are known as man-made polymers.

JEE Main Chemistry Test- 7 - Question 19
The colour of the precipitate formed when a reducing sugar is heated with Fehling’s solution is
JEE Main Chemistry Test- 7 - Question 20
Which of the following is an amino acids ?
*Answer can only contain numeric values
JEE Main Chemistry Test- 7 - Question 21

On passing electric current through moten AlCl3, 11.2 litre of Cl2 is liberated at N.T.P. at anode. The quantity of aluminium deposited at cathode in g will be :- (At. wt. of Al = 27)


Detailed Solution for JEE Main Chemistry Test- 7 - Question 21

*Answer can only contain numeric values
JEE Main Chemistry Test- 7 - Question 22

How many of the following are condensation copolymers ?
Nylon-6,   nylon-66,   Dacron,  glyptal,   buna-S,  ABS,  neoprene,  PHBV,  perlon-U.


Detailed Solution for JEE Main Chemistry Test- 7 - Question 22

Nylon-6 6, dacron, glyptal, PHBV and perlon-U all are condensation copolymers.

*Answer can only contain numeric values
JEE Main Chemistry Test- 7 - Question 23

A 250.0 ml sample of a 0.20 M Cr3+ is electrolyzed with a current of 96.5 A , so as to deposit Cr. If the remaining [Cr3+] is 0.1M, the time taken (in sec.) in the process.


Detailed Solution for JEE Main Chemistry Test- 7 - Question 23

*Answer can only contain numeric values
JEE Main Chemistry Test- 7 - Question 24

How many statements are correct in the following - 
(a) Reduction potential of Pb2+ is more than Zn2+
(b) Mercury cell is an example of primary cell 
(c) Hydrogenation of ethene (C2H4) is a first order reaction 
(d) order of wavelength γ-rays < X-ray < IR 
(e) Molal elevation constant (Kb) of ethanol is more than carbon tetrachloride (CCl4)
(f) Sols of starch, gum, gelatin are postively charged. 
(g) In coagulation of positive sol, the flocculating power is in order 
: [Fe(CN)6]–4 > PO4–3 > SO4–2 > Cl
(h) In Rhombohedral unit cell : a = b  = c


*Answer can only contain numeric values
JEE Main Chemistry Test- 7 - Question 25

Find out the ratio of incorrect and correct statements about H2O2 among the following?
1. In the pure state H2O2 is almost colorless (very pale blue)
2. Hydrogen peroxide has non planar structure in both gas phase & solid phase
3. 2-ethylanthraquinol react with water to give H2O2
4. H2O2 is used in pollution control
5. Dihedral angle of H2O2 is larger in gas phase compared to that in solid phase


Detailed Solution for JEE Main Chemistry Test- 7 - Question 25

1. True
2. True, it open book shape structure
3. False
4. True
5. True, in gas phase angle is 111.5° in solid phase it is 90.2°

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