Quiz On Petri Dish (90x12mm)

This is a timed quiz. You will be given 15 seconds per question. Are you ready?

What is usually placed inside a petri dish for growing microbes?

a) Water

b) Oil

c) Agar or nutrient medium

d) Sand

Correct! Wrong!

What is the standard diameter of many petri dishes?

a) 20 mm

b) 50 mm

c) 90 mm

d) 200 mm

Correct! Wrong!

What should you do before using a petri dish in an experiment?

a) Paint it

b) Sterilize it

c) Freeze it

d) Break it

Correct! Wrong!

Why are petri dishes kept upside down during incubation?

a) To save space

b) To stop condensation from dripping onto cultures

c) To make them dry faster

d) To keep them warm

Correct! Wrong!

What material are most disposable petri dishes made from?

a) Wood

b) Plastic

c) Rubber

d) Paper

Correct! Wrong!

What is a petri dish mainly used for?

a) Heating liquids

b) Growing microorganisms

c) Measuring temperature

d) Storing chemicals

Correct! Wrong!

Why does a petri dish have a lid?

a) To make it look good

b) To keep the medium warm

c) To prevent contamination

d) To measure liquids

Correct! Wrong!

Which field commonly uses petri dishes?

a) Astronomy

b) Microbiology

c) Geography

d) Engineering

Correct! Wrong!

Quiz On Petri Dish (90x12mm)

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