Question

Which of the following you will not do in the laboratory while performing an experiment?

i. Pour acids and bases over a sink
ii. Wear goggles
iii. Heat a stoppered test tube

• A. i only
• B. ii only
• C. iii only
• D. i and iii only
• E. i, ii, and iii

Answer 1

The correct option is C iii only

i.) Pour acids and bases over a sink- It can be done to avoid cleaning of spill solution and equipment.

ii.) Wear goggles-we should always wear goggles.

iii.) Heating a stoppered test tube can cause the boiling to be extremely sudden, forcing the liquid out of the tube or vapours do not have space for coming out of test tube so it can damage test tube.

Hence, the correct option is C.