What chemicals are used in fire extinguishers used in houses and offices ?

• Water, potassium bicarbonate and fluorocarbon
• Water, calcium hydroxide and chlorofluorocarbons
• Water, potassium hydroxide and chlorobenzene
• None of these

In which direction a rainbow is formed ?

• Above the sun
• Below the sun
• Opposite to the sun
• At the level of the sun

Which of the following statements is correct ?

• Red insulated wire is called 'live' wire
• Black insulated wire is called 'neutral' wire
• Green insulated wire is called 'earthing'
• All of the above

What is common in AIDS, hepatitis and typhoid fever ?

• All are bacterial disease
• All are water borne diseases
• All are viral disease
• All are spread by human beings

Cause of global warming is:

• Excessive use of organic manure
• Increase in the amount of CO₂ in the atmosphere
• Increase in the amount of atmospheric nitrogen
• Excessive use of fertilizer.

The gas which destroys ozone layer is:

• Oxygen
• Argon
• Chloroflurocarbon
• Hydrogen

Marijuana, a psychoactive drug is obtained from:

• seeds of pop
• capsules of poppy
• female inflorescence of cannabis
• male inflorescence of cannabis

Junk e-mail is also called:

• spam
• spoof
• sniffer script
• spool

Which polymer is used in making non-stick kitchen ware ?

• Nylon
• PVC
• Bakelite
• Teflon

Which of the following pair is incorrect ?

• Roentgen : X-ray
• Newton : Law of Gravitation
• Faraday : Diffusion of gases
• Pasteur : Bacteriology