IIT JEE — Quiz

IIT JEE Purification Of Organic Compounds .

39 questions · Test your knowledge

1 A substance which decomposes below it s boiling point can be best purified by
2 0.1914g of a monobasic organic acid is dissolved in about 20 mL of water 25 mL of 0.12 M NaOH is required for complete neutralization of the acid solution. The molar mass of the acid is65.0
3 The boiling point of a compound does not depend upon
4 A mixture of camphor and benzoic acid can be separated by which of the following technique?
5 A mixture of acetone and methanol can be separated by
6 The purification of benzeneamine is done by
7 By decreasing the pressure the boiling point of a liquid
8 Sublimation cannot be used for purification of
9 0.532 g of the chloroplatinate of an organic base (mol. Mass 264) gave 0.195 g Pt on ignition. Then the number of nitrogen atoms per molecule of the base is
10 In Lassaignes test the organic compound is fused with a piece of sodium metal in order to
11 The formation of violet colour when sodium nitroprusside is added to sodium extract indicates the presence of.
12 The Beilsteins test is a rapid test used for organic compounds to detectSulphur
13 When a solid vapourize directly without melting the process is calledEvaporation
14 In paper chromatography
15 A mixture of benzoic acid and naphthalene can be separated by crystallization from
16 Chromatographic technique was introduced by
17 Naphthalene can be purified by
18 Sugar containing an impurity of common salt can be purified by crystallization from
19 A mixture of o-hydroxyacetophenone and hydroxyacetophenone can be separated by.
20 Separation of two substances by fractional crystallisation depends upon their difference inMelting point
21 The formation of violet colour when sodium nitroprusside is added to sodium extract indicates the presence of
22 The Beilsteins test is a rapid test used for organic compounds to detect
23 When a solid vapourize directly without melting the process is called
24 Naphthalene can be purified by
25 A mixture of o-hydroxyacetophenone and hydroxyacetophenone can be separated by
26 Separation of two substances by fractional crystallisation depends upon their difference inBoiling points.
27 Which of the following element s in an organic compound cannot be detected by Lassaignes test?
28 The separation an organic compound from it s aqueous solution can be achieved by:Steam distillation
29 0.59 g of the silver salt of an organic acid (mol. Mass 210) on ignition gave 0.36 of pure silver. The basicity of the acid is1234.
30 In steam distillation the sum of the vapour pressure of the volatile compound and that of water is
31 The separation of the constituents of a mixture by column chromatography depends upon their
32 Refining of petroleum involves the process ofFractional distillation
33 The technique of gas chromatography is suitable for compounds which
34 Steam distillation is used for the extraction of
35 A compound which does not give a positive test in the Lassaignes test for nitrogen isUrea
36 Haemoglobin contains 0.33% of iron by mass. The molecular mass of haemoglobin is approximately 67200. The number of iron atoms [at. mass Fe = 56] present is one molecule of haemoglobin is6142.
37 An organic compound having carbon hydrogen and sulphur contains 4% of sulphur. The minimum molecular mass of the compound is
38 Certain organic compound contains 10% of sulphur is it. Which of the following represent the minimum molecular mass of the compound
39 The chloroplatinate of an organic base contains 39% of Pt. The equivalent mass of the base is
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