Pollution and conservation

Q1. Pollution means

• mixing two liquids

• Addition of harmful substances into the environment

• mixing of two solutions

• only air pollution

Q2. _________ is also known as" the lungs of the world"

• Himalayan Mountains
• Great Barrier Reef
• Amazon Rainforest
• Sahara Desert

Q3. Typhoid is a disease caused by ______pollution.

• food
• soil
• air
• water

Q4. plastic bags take thouands of years to decompose. they are

• compostable
• eco friendly

• non-biodegradable
• biodegradable

Q5. Chloroflurocarbons are released from

• Household cleaning products
• Automobile exhaust systems
• Industrial waste disposal
• Aerosol sprays, refrigeration, air conditioning systems, and foam-blowing agents.

Q6. Acid rain is a result of

• deforestation and land use changes
• land pollution

• pollutants like smog,poisonous gases and dust particles in the air

• contaminants in water

Q7. Sound above the range of __________is harmful for us.

• 60-70 decibels

• 80-90 decibels

• above 100 decibels

• 80-85 decibels

Q8. Sleeplessness, stress, irritation, damage to hearing is caused by

• Noise pollution
• Air pollution
• Lack of sleep hygiene
• Excessive screen time

Q9. Waste generated by hospitals and laboratories is called

• Hazardous waste
• Biomedical waste
• General waste
• Chemical waste

Q10. Bio-degradable waste

• Plastic waste that can be recycled.
• Glass waste that is non-biodegradable.
• Metal waste that can be reused indefinitely.
• Organic waste that can decompose naturally.