Environmental Chemistry

What is the main aim of launching

SBM-U in India?

• Achieving 100% scientific management of solid waste

• Eliminating open defecation

• Both A and B

• none of these

What happens to the non-biodegradable waste which is separated from domestic wastes?

• It is converted to compost

• Sent for recycling

• Deposited in landfills

• Dumped in the ocean

-------------causes health problems leading to epidemics due to contamination of groundwater.

• Poor waste management

• Proper waste management

• Dumping wastes on land

• Dumping waste in sewerages

Utilizing existing knowledge base for reducing chemical hazards along with developmental activities is the foundation of

• Collection and disposal

• Waste management

• Sustainable development

• Green chemistry

Why is it beneficial to carry out synthetic reactions in aqueous medium

• High specific heat

• Low volatility

• Inflammable

• Expensive

What was used as a solvent for dry cleaning earlier?

• CO2

• Cl2C=CCl2

• H2O

• H2O2

What are the disadvantage of using tetra chloride as a solvent for dry cleaning?

• Contaminates groundwater

• Suspected carcinogen

• Both A and B

• None of the above

Halogenated solvent is replaced by ----- for dry cleaning

• H2O2

• CO2

• CO

• H2O

Advantage of using CO2 as a solvent for dry cleaning is

• Found in abundance

• Inexpensive

• Less harm to groundwater

• Suspected carcinogen

What is used for the purpose of bleaching clothes in the process of laundry ?

• CO2

• H2O2

• H2O

• CO