Alkynes are the hydrocarbons containing carbon-carbon triple bond between them. These contain four hydrogen atoms less than the corresponding alkanes. The general formula of alkynes is C n H 2 n - 2 .

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 4 - Carbon And Its Compounds>TEST YOURSELF>Q 2

EASY

10th CBSE

IMPORTANT

Earn 100

Write the structural formula and the IUPAC name of one branched isomer of pentane $(C_{5} H_{12})$ .

Important Questions on Carbon And Its Compounds

EASY

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 4 - Carbon And Its Compounds>TEST YOURSELF>Q 3

Write the formula of the functional group of alcohols and carboxylic acids.

EASY

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 4 - Carbon And Its Compounds>TEST YOURSELF>Q 5

Draw the structure of the following compound:
Propanone

EASY

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 4 - Carbon And Its Compounds>TEST YOURSELF>Q 13

While preparing soap a small quantity of common salt is generally added to the reaction mixture of vegetable oil and sodium hydroxide. Which one of the following may be the purpose of adding common salt?

EASY

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 4 - Carbon And Its Compounds>TEST YOURSELF>Q 15

2 mL

of ethanoic acid was taken in each of the test tube I and II. A red litmus paper was introduced in test tube I and a

pH

paper was introduced in test tube II. The experiment was performed by four students and they reported their observations as:

Student	Action in Test tube I	Action in Test tube II
I	turned blue	turned pink
II	turned blue	turned blue
III	remained unchanged	turned pink
IV	remained unchanged	turned blue

The correct set of observations is that of student: