Science Experiments

Which solution is used for testing for starch?

• Bromine solution
• Chlorine solution
• Iodine solution
• Sulfur solution

What is the test for proteins called?

• Lowry assay
• Biuret test
• Bradford assay
• Sudan III test

What is the test for reducing sugars called?

• Benedict's test
• Tollens' test
• Fehling's test
• Iodine test

What is the test for identifying cations called?

• Flame test

• Salt test
• Neutralization test
• Anion test

How do you identify a carbonate molecule?

• By reaction with dilute acid and limewater.

• By reaction with dilute acid and carbon

• By reaction with dilute acid and oxygen

• By reaction with carbon and oxide

How do you identify a chloride ion?

• Formation of a white precipitate with silver nitrate solution

• Formation of a black precipitate with silver nitrate solution

• Formation of a green precipitate with silver nitrate solution

• Formation of a yellow precipitate with silver nitrate solution

How do you identify a nitrate ion?

• Reducing nitrogen

• Reducing aluminium

• Oxidising aluminium

• Oxidising nitrogen

How do you identify a sulphate ion?

• Formation of a black precipitate (with aqueous barium ions)

• Formation of a green precipitate (with aqueous barium ions)

• Formation of a yellow precipitate (with aqueous barium ions)

• Formation of a white precipitate (with aqueous barium ions)

How could you tell that a gas is an ammonia molecule?

• Observe if it smells like roses.
• Use litmus paper to see if it turns red litmus paper blue.
• Check if it changes color when exposed to light.
• Use litmus paper to see if it turns red litmus paper red.

How could you tell that a gas is a carbon dioxide molecule?

• By observing the gas producing a blue flame when ignited
• By observing the gas emitting a foul odor
• By observing the gas turning red in limewater
• By observing the milky color change in limewater when the gas is passed through it.