CIE Chemistry (US-0439): Specimen Questions with Answers 157 - 158 of 240

Question number: 157

True-False▾

Is the Following Statement True or False?

Hydrochloric acid is used as a bleaching agent in the textile industry.

Answer

TRUE

Explanation

Hydrochloric acid is used in textile industries to bleach the textile and add colour to the clothes. It is also used indirectly for bleaching as hydrochloric acid is used to make bleaching powder.

So, the statement is true.

Question number: 158

MCQ▾

Question

The first element in group is ________.

Choices

Choice (4) Response

a.

Helium

b.

Beryllium

c.

Sodium

d.

Lithium

Answer

b.

Explanation

Beryllium (Be) is the very first element in group.

Beryllium (Be) is the very first element in 2<sup/>nd</sup> group

Beryllium (Be) is the very first element in 2nd group

Beryllium (Be) is the very first element in 2nd group