Which one is the hardest form of carbon ?

• Coke
• Graphite
• Diamond
• Charcoal

The gas used for artificial ripening of green fruit is:

• Ethylene
• Ethane
• Carbon dioxide
• None of these

Ozone hole refers to :

• hole in Ozone layer
• decrease in the Ozone layer
• decrease in thickness of Ozone layer
• increase in thickness of Ozone layer

Mesons are found in

• Laser beam
• X-ray
• Gamma rays
• Cosmic rays

Nuclear fission is caused by the impact of

• Neutron
• Proton
• Deuteron
• Electron

'Beans' is associated with computer programming language :

• C++
• Java
• COBOL
• PASCAL

Who was the first Indian to go into space ?

• Ravi Malhotra
• Satish Dhawan
• Rakesh Sharma
• Kalpana Chawla

Ozone layer is situated in the upper regions of

• Troposphere
• Stratosphere
• Magnetosphere
• Mesosphere

The longest day in the southern Hemisphere is on :

• 22nd December
• 21st June
• 21st March
• 23rd September

Acid rain is caused due to the pollution of environment by:

• Carbondioxide and Nitrogen
• Carbon monoxide and Carbondioxide
• Ozone and Methane
• Some oxide of Nitrogen and Sulpher