Sound causes hazardous noise pollution at decibels:

• Above 50
• Above 80
• Above 100
• Above 130

India first atomic device was exploded in 1974 at:

• Bikaner
• Barmed
• Pokhran
• Jaisalmer

Big Bang theory explains:

• Origin of Universe
• Origin of Sun
• Laws of Chemistry
• Laws of History

The moon takes __________ days to go round the earth once.

• 28 days
• 45 days
• 50 days
• 65 days

The highest tides occur at the time of the new moon and the:

• full moon
• solar eclipse
• lunar eclipse
• volcanoes

Which of the following is a fossil fuel?

• Coal
• Solar energy
• Quartz
• Lava

Which layer of gas in the atmosphere protects us from harmful ultra violet rays of the sun?

• Oxygen
• Carbon dioxide
• Nitrogen
• Ozone

Which of the following is a vector?

• Mass
• Volume
• Speed
• Velocity

Oxygen is transported to the cells of the human body through:

• Red Blood cells
• White Blood cells
• Hormones
• Enzymes

Which of the following is a source of non-conventional energy?

• Firewood
• Diesel
• Petrol
• Biogas