Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Presence of halogen in organic compounds can be detected using

• Leibig's test

• Duma's test

• Kjeldahl test

• Beilstien's test

Which of the following species does not exert a resonance effect?

• C₆H₅NH₂

• ${\mathrm{C}}_6{\mathrm{H}}_5\stackrel{+}{\mathrm{N}}{\mathrm{H}}_3$

• C₆H₅OH

• C₆H₅Cl

How many optically active stereomers are possible for butan-2,3-diol?

• 1

• 2

• 3

• 4

Methoxy methane and ethanol are

• position isomers

• chain isomers

• functional isomers

• optical isomers

An organic compound X is oxidised by using acidified K₂Cr₂O₇. The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The possible structure of X is

• CH₃CH₂OH

• CH₃-CO-CH₃

• (CH₃)₂CHOH

• CH₃CHO

IUPAC name of (CH₃)₃CCl is

• n-butyl chloride

• 3-chloro butane

• 2-chloro 2-methyl propane

• t-butyl chloride

An organic compound on heating with CuO produces CO₂ but no water. The organic compound may be

• carbon tetrachloride

• chloroform

• methane

• ethyl iodide

Chloroacetic acid is a stronger acid than acetic acid. This can be explained using

• -M effect

• - I effect

• +M effect

• +I effect

1.2 g of organic compound of Kjeldahlization liberates ammonia which consumes 30 cm³ of 1 N HCl. The percentage of nitrogen in the organic compound is

• 30

• 35

• 46.67

• 20.8

The yellow precipitate formed during the chromyl chloride test is chemically

• chromic acid

• lead chromate

• lead acetate

• sodium chromate