Science in the Home: Uncover the Science Behind Your Daily Life

Question 1

When selecting a cleaning product, which factor should NOT be a top priority?

Accepted Answer

Contains harsh chemicals

Answer

Effectiveness in removing dirt and grime

Answer

Safety for use on multiple surfaces

Answer

Biodegradability and environmental friendliness

Question 2

Which of the following is NOT a type of household cleaner?

Accepted Answer

Oil

Answer

Detergent

Answer

Disinfectant

Answer

Bleach

Question 3

What is the main ingredient in most detergents?

Accepted Answer

Surfactants

Answer

Acids

Answer

Bases

Answer

Solvents

Question 4

Which of the following appliances uses the principle of electromagnetic induction?

Accepted Answer

Electric hob

Answer

Toaster

Answer

Microwave

Answer

Refrigerator

Question 5

What is the purpose of a fuse in an electrical circuit?

Accepted Answer

To prevent electrical fires

Answer

To control the flow of current

Answer

To store energy

Answer

To convert electrical energy to mechanical energy

Question 6

Which of the following materials is a poor conductor of heat?

Accepted Answer

Wood

Answer

Metal

Answer

Plastic

Answer

Water

Question 7

What is the main difference between a conductor and an insulator?

Accepted Answer

Conductors allow electricity to flow, while insulators do not.

Answer

Conductors allow heat to flow, while insulators do not.

Answer

Conductors are made of metal, while insulators are made of non-metal.

Answer

Conductors are solids, while insulators are liquids.

Question 8

Which of the following is a renewable energy source?

Accepted Answer

Solar power

Answer

Coal

Answer

Natural gas

Answer

Nuclear power

Question 9

Which of the following is NOT a benefit of using energy-efficient appliances in the home?

Accepted Answer

Increased home value

Answer

Lower energy bills

Answer

Reduced greenhouse gas emissions

Question 10

What is the main purpose of a refrigerator in a home?

Accepted Answer

To keep food fresh for a longer time

Answer

To kill bacteria and sterilize food

Answer

To heat food to a specific temperature

Answer

To remove moisture from the air

Question 11

Which material is a good conductor of heat and is often used to make cookware?

Accepted Answer

Metal

Answer

Ceramic

Answer

Glass

Answer

Rubber

Question 12

What is the main benefit of using a refrigerator?

Accepted Answer

Extending the lifespan of food

Answer

Speeding up the cooking process

Answer

Cleaning water for drinking

Answer

Producing electricity for home use

Question 13

What is the primary source of energy for most household appliances?

Accepted Answer

Electrical

Answer

Solar

Answer

Chemical

Answer

Manual

Question 14

Which material is often used to make kitchen countertops?

Accepted Answer

Ceramic

Answer

Styrofoam

Answer

Glass

Answer

Cardboard

Question 15

What is the main purpose of a refrigerator?

Accepted Answer

To store and preserve food

Answer

To cook food

Answer

To wash dishes

Answer

To dry clothes

Question 16

Which of the following is a natural cleaning agent?

Accepted Answer

Lemon juice

Answer

Bleach

Answer

Ammonia

Answer

Detergent

Question 17

What symbol is used to indicate hazardous substances on household products?

Accepted Answer

A red triangle with a white skull and crossbones

Answer

A green circle with a white tick

Answer

A blue square with a white exclamation mark

Answer

A yellow diamond with a black question mark

Question 18

What is the recommended method for disposing of used batteries?

Accepted Answer

Recycling them at a designated collection point

Answer

Throwing them in the regular trash

Answer

Flushing them down the toilet

Answer

Burying them in the backyard

Question 19

How can technology improve the efficiency and safety of household appliances?

Accepted Answer

By doing all of the above

Answer

By providing remote control and monitoring

Answer

By adjusting settings for optimal performance

Answer

By alerting users to potential hazards

Question 20

What is NOT a primary function of a refrigerator?

Accepted Answer

Heating food

Answer

Preserving food

Answer

Cooling drinks

Answer

Freezing food

Question 21

Which form of energy is transformed into heat by a microwave oven?

Accepted Answer

Electrical energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Light energy

Question 22

Which of the following is considered a biodegradable cleaning product?

Accepted Answer

Vinegar

Answer

Bleach

Answer

Ammonia

Answer

Window cleaner

Question 23

What is the primary purpose of a washing machine?

Accepted Answer

To remove dirt and stains from clothing

Answer

To dry clothes

Answer

To iron clothes

Answer

To soften fabrics

Question 24

What is the main role of detergent in the washing process?

Accepted Answer

To break down and dissolve dirt and stains

Answer

To create suds and foam

Answer

To soften water

Answer

To whiten and bleach clothes

Question 25

What is the primary function of a vacuum cleaner?

Accepted Answer

To remove dust and dirt from surfaces

Answer

To polish floors

Answer

To deodorize carpets

Answer

To clean windows

Question 26

Which ingredient is commonly found in most oven cleaners?

Accepted Answer

Sodium hydroxide

Answer

Hydrochloric acid

Answer

Ammonia

Answer

Bleach

Question 27

How does a refrigerator work?

Accepted Answer

It uses a compressor to move a refrigerant, which absorbs and releases heat when it changes state.

Answer

It moves heat from a cold area to a warm area.

Answer

It uses substances that damage the ozone layer.

Question 28

Which of the following cleaning products is primarily used for removing fabric stains?

Accepted Answer

Bleach

Answer

Detergent

Answer

Dish soap

Answer

Floor cleaner

Question 29

Which practice promotes sustainable use of household appliances?

Accepted Answer

Using the eco-mode setting

Answer

Operating appliances at full capacity

Answer

Leaving appliances plugged in while not in use

Answer

Washing clothes in hot water

Question 30

What is the process of heat transfer from a warm object to a cooler one called?

Accepted Answer

Conduction

Answer

Convection

Answer

Radiation

Answer

Sublimation

Question 31

Which of the following does NOT influence the efficiency of a refrigerator?

Accepted Answer

Color of the refrigerator

Answer

Temperature setting

Answer

Frequency of door opening

Answer

Size of the refrigerator

Question 32

Which household appliance harnesses the Joule effect to generate heat?

Accepted Answer

Toaster

Answer

Microwave

Answer

Blender

Answer

Refrigerator

Question 33

What is the primary mechanism by which soap cleans?

Accepted Answer

Emulsification

Answer

Hydrolysis

Answer

Oxidation

Answer

Polymerization

Question 34

Which of these materials is a proficient conductor of heat?

Accepted Answer

Metal

Answer

Wood

Answer

Glass

Answer

Plastic

Question 35

What is the primary function of a thermostat in a heating system?

Accepted Answer

To regulate temperature

Answer

To ignite the fuel source

Answer

To circulate warm air

Answer

To monitor air quality

Question 36

Which of the following is NOT an advantage associated with energy-efficient appliances?

Accepted Answer

Increased maintenance requirements

Answer

Reduced energy consumption

Answer

Lower carbon emissions

Answer

Enhanced appliance performance

Question 37

What is the primary function of a capacitor in an electrical circuit?

Accepted Answer

Storing electrical charge

Answer

Conducting electricity

Answer

Regulating voltage

Answer

Protecting against electrical overloads

Question 38

Which of the following is NOT a benefit of using energy-efficient appliances?

Accepted Answer

Improved indoor air quality

Answer

Lower energy consumption and reduced utility bills

Answer

Reduced carbon footprint and environmental impact

Question 39

Which of these gases does NOT trap heat in the atmosphere, contributing to global warming?

Accepted Answer

Oxygen

Answer

Carbon dioxide

Answer

Methane

Question 40

Which of these gases is a greenhouse gas that can cause climate change?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Question 41

What is the primary function of a refrigerator?

Accepted Answer

To preserve food by cooling it and slowing down the growth of microorganisms

Answer

To heat food

Answer

To remove moisture from food

Answer

To generate ice for drinks

Question 42

When choosing a refrigerator, which feature is not important to consider?

Accepted Answer

Colour

Answer

Energy efficiency

Answer

Capacity and size

Answer

Defrosting mechanism

Question 43

Which of these factors does NOT affect how quickly heat moves through a material?

Accepted Answer

Color

Answer

Thickness

Answer

How well it conducts heat

Answer

Surface area

Question 44

Which household appliance utilizes the principle of magnetism to function?

Accepted Answer

Refrigerator

Answer

Dishwasher

Answer

Microwave oven

Answer

Electric kettle

Question 45

When vinegar and baking soda are combined, what type of chemical reaction occurs?

Accepted Answer

Neutralization

Answer

Oxidation

Answer

Combustion

Answer

Hydrolysis

Question 46

Which lighting technology employs gas discharge to emit light?

Accepted Answer

Fluorescent lamp

Answer

Halogen lamp

Answer

LED lamp

Answer

Incandescent bulb

Question 47

What is the primary function of cellulose in the composition of paper?

Accepted Answer

Provides strength and rigidity

Answer

Absorbs moisture

Answer

Improves whiteness

Answer

Holds ink

Question 48

Which cleaning solution is most suitable for removing grease from surfaces?

Accepted Answer

Dishwashing liquid

Answer

Bleach

Answer

Floor cleaner

Answer

Glass cleaner

Question 49

What is the primary purpose of a thermostat in domestic heating systems?

Accepted Answer

Regulates temperature to a desired level

Answer

Prevents overheating

Answer

Controls air circulation

Answer

Measures outdoor temperature

Question 50

Which type of material is commonly used for its insulating properties in homes?

Accepted Answer

Fiberglass

Answer

Concrete

Answer

Metal

Answer

Plastic

Question 51

In household appliances, what process converts electrical energy into heat?

Accepted Answer

Joule heating

Answer

Convection heating

Answer

Radiation heating

Answer

Induction heating

Question 52

Which kitchen appliance utilizes microwaves to heat food?

Accepted Answer

Microwave oven

Answer

Toaster

Answer

Electric stovetop

Answer

Traditional oven

Question 53

What material is commonly used for its non-stick properties in the coating of cookware?

Accepted Answer

Teflon

Answer

Stainless steel

Answer

Ceramic

Answer

Copper