The time period of a pendulum when taken to the Moon would:

• remain the same
• decrease
• become zero
• increase
Correct Option: D  [ increase ]

Remark:

Which of the following contains maximum carbon dioxide ?

• Grasslands
• Forests
• Oceans
• Agroecosystems
Correct Option: C  [ Oceans ]

Remark:

The bats can fly in the dark because:

• they can see the objects in darkness
• they have weak legs and are likely to be attacked by predators
• they generate flashes of light
• they generate ultrasonic sound waves
Correct Option: D  [ they generate ultrasonic sound waves ]

Remark:

Ringworm is a ___________ disease.

• bacterial
• protozoan
• viral
• fungal
Correct Option: D  [ fungal ]

Remark:

The red planet is

• Venus
• Saturn
• Mars
• Neptune
Correct Option: C  [ Mars ]

Remark:

Which of the following is not a renewable source of energy ?

• Natural gas
• Geothermal energy
• Flowing water
• Biomass
Correct Option: A  [ Natural gas ]

Remark:

The type of crop which is able to fix nitrogen from air is known as:

• Legume
• Rice
• Tuber
• Potato
Correct Option: A  [ Legume ]

Remark:

When iron rusts, its weight __________

• decreases
• increases
• remains the same
• first increases and then decreases
Correct Option: B  [ increases ]

Remark:

In medical terminology, USG stands for:

• Undersized gland
• Ultrasonography
• Unsegmented gonads
• None of the above
Correct Option: B  [ Ultrasonography ]

Remark:

The process in which living organisms are used to remove contaminants, pollution or other unwanted substances from soil or water is known as:

• Biotechnology
• bioremediation
• Biodegradation
• Biomagnification
Correct Option: B  [ bioremediation ]

Remark: