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 is not an element ?

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

Remark:

Quality of petrol is expressed in:

• Gold number
• Cetane number
• Methane number
• Octane number
Correct Option: D  [ Octane number ]

Remark:

When a ship ?oats on water:

• it displaces no water
• the mass of water displaced is equal to the mass of the ship
• the mass of water displaced is lesser than the mass of the ship
• the mass of water displaced is greater than the mass of the ship
Correct Option: B  [ the mass of water displaced is equal to the mass of the ship ]

Remark:

The intensity of earthquake is measured by :

• Barometer
• Hydrometer
• Polygraph
• Seismograph
Correct Option: D  [ Seismograph ]

Remark:

Which of the following statements is correct ?

• Protons are negatively charged and are present in the nucleus
• Electrons are positively charged and are present in the nucleus
• Electrons are negatively charged and are present in the orbits
• The entire mass of atom is distributed in the orbits.
Correct Option: C  [ Electrons are negatively charged and are present in the orbits ]

Remark:

India's first supercomputer is known as:

• SAGA
• PARAM 8000
• EKA
• PARAM YUVA
Correct Option: B  [ PARAM 8000 ]

Remark:

Which of the following is a large blood vessel that carries blood away from the heart ?

• Vein
• Artery
• Capillary
• Nerve
Correct Option: B  [ Artery ]

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.

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

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

Remark: