Which of the following adds/add carbon dioxide to the carbon cycle on the planet earth ?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
(Select correct answer)

• 1, 2 and 4 only
• 1 and 3 only
• 2 only
• 1, 2 and 3 only
Correct Option: A  [ 1, 2 and 4 only ]

Remark:

Which of the following is an Inert Gas?

• Hydrogen
• Nitrogen
• Oxygen
• Argon
Correct Option: D  [ Argon ]

Remark:

Heavy water is :

• Ice
• Water at 4 degree Celsius
• Deuterium oxide
• Solution of sugar and water
Correct Option: C  [ Deuterium oxide ]

Remark:

What is the meaning of the word 'Tsunami' in Japanese?

• High waves
• Destructive waves
• Harbour waves
• none of these
Correct Option: C  [ Harbour wave ]

Remark: Indian Ocean Tsunami occurred on 26 December, 2004 with an epicentre off the west coast of Sumatra, Indonesia.

What is the scientific name of Vitamin- C :

• Turtaric Acid
• Folic Acid
• Ascorbic Acid
• Oxalic Acid
Correct Option: C  [ Ascorbic Acid ]

Remark:

dolomite is used in which field?

• Soil conditioner
• Pasteurization
• Dynamite
• Synthetic rubber
Correct Option: A  [ Soil conditioner ]

Remark:

__________ is the first missile developed in India.

• Agni
• Aakash
• Trishul
• Prithvi
Correct Option: D  [ Prithvi ]

Remark:

The amount of light entering into eye can be controlled and regulated by ___________ .

• Sclera
• cornea
• pupil
• retina
Correct Option: C  [ pupil ]

Remark:

SA-node of mammalian heart is known as :

• Autoregulator
• Pace-maker
• Time controller
• Beat regulator
Correct Option: B  [ Pace-maker ]

Remark:

A CD-ROM is a kind of:

• Optical disk
• Magnetic disk
• Fibre disk
• None of these
Correct Option: A  [ Optical disk ]

Remark: