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Test: Chemistry - 4


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Test: Chemistry - 4 - Question 1

An organic compound ‘X’ on treatment with acidified  gives a compound ‘Y’ which reacts with and sodium carbonate to form tri-iodomethane. The compound ‘X’ is

Test: Chemistry - 4 - Question 2

Heating methyl phenyl ether with HI gives

Test: Chemistry - 4 - Question 3

In the following compounds,
The order of acidity is

Test: Chemistry - 4 - Question 4
Which of the following is a Riemer-Tiemann reaction
Test: Chemistry - 4 - Question 5
Victor Meyer’s test is not given by
Test: Chemistry - 4 - Question 6
When phenol is treated withe excess bromine water
Test: Chemistry - 4 - Question 7
n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent
Test: Chemistry - 4 - Question 8
Glycerol is treated with excess of HI at room temperature and then with more HI at 426K. The
final product obtained is
Test: Chemistry - 4 - Question 9

Phenol reacts with PCl5 to give mainly 

Detailed Solution for Test: Chemistry - 4 - Question 9

Answer :D

Solution :

Phenyl reacts with PCl5 to give only a small amount of chlorobenzene, the main product is triphenyl phophate, (C6H5)3PO4, the ester of phosphoric acid. With PCl3, we get ester of phosphoric acid, (C6H5)3PO3.

Test: Chemistry - 4 - Question 10
In the reaction of phenol with   and aqueous NaOH at (343 K), the electrophile attacking the ring is
Test: Chemistry - 4 - Question 11
Which of the following on oxidation gives a ketone ?
Test: Chemistry - 4 - Question 12
Dow’s reaction involves
Test: Chemistry - 4 - Question 13
Correct increasing order of acidity is as follows ?
Detailed Solution for Test: Chemistry - 4 - Question 13 D is correct because increasing order of replaceable hydrogen.
Test: Chemistry - 4 - Question 14
Which of the following cannot be made by using Williamson’s synthesis ?
Test: Chemistry - 4 - Question 15
The compound obtained by the reaction of ethene with diborane followed by hydrolysis with alkaline
hydrogen peroxide is
Test: Chemistry - 4 - Question 16
When benzenediazonium chloride is treated with water, the compound formed is
Test: Chemistry - 4 - Question 17
Which one of the following compounds will be most readily attacked by an electrophile ?
Test: Chemistry - 4 - Question 18
The alcohol which does not give a stable compound on dehydration is
Test: Chemistry - 4 - Question 19
What amount of bromine will be required to convert 2g of phenol into 2,4, 6-tribromophenol ?
Test: Chemistry - 4 - Question 20
The reaction of   with acetone and hydrolysis of the resulting product gives
Test: Chemistry - 4 - Question 21
Identify X in the following sequence of reaction
Test: Chemistry - 4 - Question 22
Which of the following compounds will react with two moles of   ?
Test: Chemistry - 4 - Question 23
Ethyl ethanoate P.The product P will be
Test: Chemistry - 4 - Question 24
Which of the following pairs of solutions is isotonic ?
Test: Chemistry - 4 - Question 25
At 298K, highest osmotic pressure is exhibited by a 0.1M solution of
Test: Chemistry - 4 - Question 26
Which of the following is an electrically prepared semipermeable membrane ?
Test: Chemistry - 4 - Question 27
What will happen if an egg whose white surface is removed by dilute HCl solution is placed in a saturated solution of NaCl ?
Test: Chemistry - 4 - Question 28
The van’t Hoff factor for a 0.1 M  solution is 4.20. The degree of dissociation is
Test: Chemistry - 4 - Question 29
The molar boiling-point constant for water is 0.513 Km–1. When 0.1 mole of sugar is dissolved in 200.0 g of water, the solution boils under a pressure of 1.0 atm at
Test: Chemistry - 4 - Question 30
When mercuric iodide is added to an aqueous solution of potassium iodide (in excess), a soluble complex, is formed. Then,
Test: Chemistry - 4 - Question 31
The degree of association is given by the expression
Test: Chemistry - 4 - Question 32
The average osmotic pressure of human blood is 7.8 bar at 37oC. What is the concentration of an aqueous NaCl solution that could be introduced in the bloodstream?
Test: Chemistry - 4 - Question 33
Which of the following ions has smallest radii ?
Test: Chemistry - 4 - Question 34
The yellow colour of chromates changes to orange on acidification due to formation of
Test: Chemistry - 4 - Question 35
Which of the following is an acidic oxide ?
Test: Chemistry - 4 - Question 36
Malachine is a mineral of
Test: Chemistry - 4 - Question 37
The flux used in smelting of copper ores is
Test: Chemistry - 4 - Question 38
In the reaction between  and KI, a white precipitate is obtained. The precipitate has the
composition
Test: Chemistry - 4 - Question 39
An alloy which does not contain copper, is
Test: Chemistry - 4 - Question 40
Lucas reagent is
Test: Chemistry - 4 - Question 41
The carbon content in steel is
Test: Chemistry - 4 - Question 42
In the dichromate dianion
Test: Chemistry - 4 - Question 43
Arrange   in increasing order of their ionic radii
Test: Chemistry - 4 - Question 44
on heating gives
Test: Chemistry - 4 - Question 45
Transuranic elements begin with
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