HBEL7 Chemistry second Test

Your younger sibling accidentally spills salt into a cup of water. What is the best way to recover the salt?

• Filtration

• Decantation

• Evaporation

• Chromatography

Sarah forgot her cup of tea on the table, and when she came back, she noticed an oily layer on top. Which separation method can she use to remove the oil?

• Filtration

• Decantation

• Chromatography

• Evaporation

An artist wants to create different shades of ink from a black marker. Which technique can help them separate the colors?

• Distillation

• Chromatography

• Evaporation

• Sedimentation

You accidentally drop some iron nails into a bowl of sand. What is the easiest way to separate them?

• Filtration

• Handpicking

• Using a magnet

• Distillation

 A farmer wants to remove husks from grains. Which method should they use?

• Filtration

• Sieving

• Evaporation

• Distillation

Why do hospitals use fractional distillation of air?

• To separate pure oxygen for patients

• To make drinking water

• To produce cooking gas

• To separate salt from seawater

Which of these professionals uses chemistry the most in their daily work?

• Journalist

• Pharmacist

• Lawyer

• Pilot

Which of these professionals uses chemistry the most in their daily work?

• Journalist

• Pharmacist

• Lawyer

• Pilot

Which of the following is an example of chemistry in action in your kitchen?

• Boiling water turning into steam

• Cutting an apple into pieces

• Painting a wall

• Plugging in a phone charger

Which of the following is NOT a field where chemistry is important?

• Medicine

• Engineering

• Photography

• Football coaching