Light Year is a unit of

• Time
• Distance
• Brightness
• none of these
Correct Option: B  [ Distance ]

Remark: A unit of Astronomical distance equivalent to the distance that light travels in one year,

Plants prepare their food by:

• photosynthesis
• carbohydrolysis
• metabolic synthesis
• photorespiration
Correct Option: A  [ photosynthesis ]

Remark:

The edible part of potato is

• Root
• Tuber
• Rhizome
• Corm
Correct Option: B  [ Tuber ]

Remark: Stems get modified into underground structures for storage of food as seen in potato called tuber.

Part of earth where life exist is known as:

• Lithosphere
• Hydrosphere
• Atmosphere
• Biosphere
Correct Option: D  [ Biosphere ]

Remark:

Which of the following is a non metal that remains liquid at room temperature?

• Phosphorous
• Bromine
• Chlorine
• Helium
Correct Option: B  [ Bromine ]

Remark:

Which of the following is the structural and functional unit of kidneys?

• Nephron
• Pits
• Nutrofil
• Tentacle
Correct Option: A  [ Nephron ]

Remark:

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:

Sodium stearate is a salt and is used?

• in gunpowder
• in Paint
• to make Soap
• to make fertilizer
Correct Option: C  [ to make Soap ]

Remark:

Which of the following is the uppermost layer of the atmosphere?

• Stratosphere
• Mesosphere
• Ionosphere
• Exosphere
Correct Option: D  [ Exosphere ]

Remark:

Glaciers always melt first at the:

• top surface
• sides
• bottom
• middle surface
Correct Option: C  [ bottom ]

Remark: