Ethene is an ___________

(a)

alkane

(b)

alkene

(c)

alkyne

(d)

aromatic hydrocarbon

The enzymes present in yeast is / are _____________

(a)

invertase

(b)

zymase

(c)

both (a) and (b)

(d)

neither (a) nor (b)

Rectified spirit contains

(a)

95.5% of ethanol and 4.5% of water

(b)

100% pure alcohol

(c)

4.5% of ethanol and 95.5% of water

(d)

50% of ethanal and 50% of water

Ethanol is used as ______________

(a)

a preservative for biological specimen

(b)

an antifreeze

(c)

an antiseptic

(d)

all the above

Ethanoic acid turns

(a)

red litmus blue

(b)

blue litmus red

(c)

red litmus green

(d)

blue litmus green

Which of the unique feature (s) of Carbon enables it to form a large number of compounds?

(a)

catenation

(b)

covalency

(c)

tetra valency

(d)

both (a) and (c)

What is rectified spirit??

How is nitrogen content of molasses fortified?

How will you convert ethanol to ethane?

Write the uses of ethanol.

Explain the reaction of carboxylic acids on metals

Write the characteristics of organic compounds.

How will you classify hydrocarbons?

Write the characteristics of hydrocarbons.

Explain how ethanol is manufactured from molasses?

How to identify saturated and unsaturated compounds?

The molecular formula of an alcohol is C₄H₁₀O. The locant number of its –OH group is 2.
(i) Draw its structural formula.
(ii) Give its IUPAC name.
(iii) Is it saturated or unsaturated?

An organic compound ‘A’ is widely used as a preservative and has the molecular formula C₂H₄O₂. This compound reacts with ethanol to form a sweet smelling compound ‘B’.
(i) Identify the compound ‘A’.
(ii) Write the chemical equation for its reaction with ethanol to form compound ‘B’.
(iii) Name the process.