What is the name of the laboratory apparatus shown?

• Wire gauze

• Measuring cylinder

• Pipeclay triangle

• Glass jar

Other than the Bunsen burner, name the other two of the laboratory apparatus shown.

• Test tube

• Boiling tube

• Tripod stand

• Retort stand with clamp

The smaller tube is called

• boiling tube

• smaller tube

• tube

• test tube

What is the function of tripod stand?

• To hold or support apparatus.

• To support apparatus during heating.

• To hold apparatus

• To support apparatus

"To hold larger amounts of chemicals"

What are the laboratory apparatus with the function mentioned above?

• Gas jar

• Flat-bottom flask

• Conical flask

• Beaker

What is the name for the hazardous symbol shown?

Chloroform and ammonia are the chemical substances which irritate and give out vapour or fumes that will hurt the eyes, nose and throat.

What is the name for the hazardous symbol that can be seen on the bottle of the chemical substance?

Aaron was colded by the teacher because he entered the school laboratory after the school session on the evening without telling anyone. Why do you think Aaron was scolded for?

• Aaron was scolded because he entered the laboratory without the teacher's permission.

• Aaron was scolded because he is naughty.

• Aaron was scolded because he went to the laboratory.

• Aaron was being scolded because the teacher is in the bad mood.

Convert 900s to hr.

What is the value for nano?

• 0.000 001

• 0.01

• 0.000 000 000 0001

• 0.000 000 001