Technology in everyday life

1

300

• What component in a UPS stores charge?

Battery

300

• What converts DC to AC in a UPS?

S Inverter

400

• Bioplastics are made from renewable sources like _______________

Starch

400

• What type of pollution does bioplastics aim to reduce?

Plastic, air, water, soil

500

• Which property makes bioplastics environmentally friendly?

DJ Biodegradability

2

300

• Which alkali is used to make solid soap?

T Sodium - OH

300

Which substance is use to make liquid soap

potassium - OH

400

11. What ion in hard water reacts with soap to form scum? 

Calcium

400

• What is the main raw material for soap making?

Fat

500

• Which substance in soap attracts oil and grease?

Hydrophobic

3

300

• Which type of energy does a solar cooker use?

Solar

300

• Which color absorbs the most heat in a solar cooker?

Black

400

• What is the main benefit of using a solar cooker?

Renewable

400

• Which mineral in toothpaste strengthens enamel?

Fluoride

500

21. Which part of the tooth does toothpaste protect? 

S - Enamel

4

300

• What device in a wind turbine converts motion into electricity?

T Generator

300

• What does UPS stand for?

Uninterruptible PS

400

• What electrical fault does a UPS protect against?

DJ Blackout

400

• What part of soap molecules is attracted to water?

Hydrophilic

500

• What is one limitation of a solar cooker?

Clouds

5

300

• What is the main moving part of a wind turbine?

Blades

300

• What is the main difference between bioplastics and traditional plastics?

S Source difference

400

• What type of current does a UPS battery store?

DC

400

• Which gas is released when magnesium reacts with acid?

Dj Hydrogen

500

• What type of reaction occurs when magnesium replaces hydrogen?

Displacement