The process of improving the quality of rubber by heating it with sulphur is called

• vulcanization

• acceleration

• sulphonation

• galvanization

Which source has been particularly fruitful in finding novel anti-tumour agents such as bryostatins and dolostatins?

• Marine sources

• Animals

• Venoms and toxins

• Combinatorial chemistry

The pollutant responsible for ozone holes is

• CO₂

• SO₂

• CO

• CFC

One of the best solutions to get rid of non-biodegradable wastes is

• burning

• dumping

• burying

• recycling

Vermicomposting is done by

• fungus

• bacteria

• worms

• animals

If waste materials contaminate the source of drinking water, which of the following diseases will spread?

• Scurvy

• Typhoid

• Malaria

• Anaemia

India exports power to

• Bangladesh

• Myanmar

• Pakistan

• Bhutan

The alkaloid naturally found in coffee, cocoa and cola nut is

• cocaine

• morphine

• tannin

• caffeine

The metal used for making aircrafts and rockets is

• lead

• aluminium

• nickel

• copper

The first woman President of Indian National Congress is

• Kamala Devi Chattopadhyaya

• Sarojini Naidu

• Annie Besant

• Rajkumari Amrit Kaur