Question

CHOOSE THE BEST OPTION:

STATEMENT 1: A pure substance consists of a single type of matter.

STATEMENT 2: A pure substance consists of more than one type of matter.

STATEMENT 3: Milk is a not a pure substance.

STATEMENT 4: Pure substance has same chemical nature.

• A. All the statements are true.
• B. Only statement 2 is correct.
• C. Statement 1, 3 and 4 are correct.
• D. Statement 3 and 4 are true.

Answer 1

The correct option is C

Statement 1, 3 and 4 are correct.

A pure substance has same chemical nature and is of only one type. Milk is impure because it a mixture of many different substances and the composition of milk is not constant and uniform.