Which of the following is an anaesthetic gas ?

• Nitrogen dioxide
• Nitrous oxide
• Nitric oxide
• Nitrogen
Correct Option: B  [ Nitrous oxide ]

Remark:

Which of the following diseases is caused by virus ?

• Cholera
• Typhoid
• Tuberculosis
• Small Pox
Correct Option: D  [ Small Pox ]

Remark:

The longest bone in the human body is:

• Ulna
• Humerus
• Femur
• Tibia
Correct Option: C  [ Femur ]

Remark:

The sky looks blue due to

• Dispersion of Sunlight
• Scattering of Sunlight
• Refraction of Sunlight
• None of these
Correct Option: B  [ Scattering of Sunlight ]

Remark: The scattering of sunlight is a phenomenon that occurs when sunlight interacts with particles or molecules in the Earth's atmosphere, causing the light to change direction and spread out in various directions.

The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is:

• Argon
• Xenon
• Helium
• Krypton
Correct Option: C  [ Helium ]

Remark:

What is the rarest blood type in the world ?

• A
• O positive
• AB ^_
• B
Correct Option: C  [ AB^- ]

Remark:

Cuscuta is a :

• Parasite
• Saprophyte
• Epiphyte
• Xerophyte
Correct Option: A  [ Parasite ]

Remark:

Pure gold is of

• 24 Carat
• 18 Carat
• 22 Carat
• None of these
Correct Option: A  [ 24 Carat ]

Remark: A "carat" is a unit of measurement used to express the weight of gemstones, particularly diamonds and gold etc.

Which one of the following organs is the main respiratory organ of whale?

• Integuments
• Gills
• Lungs
• Trachea
Correct Option: C  [ Lungs ]

Remark:

What changes will happen to a ball of ice and water kept at exactly zero degree Celsius?

• All ice will melt
• All water will become ice
• No change will happen
• Only some ice will melt
Correct Option: C  [ No change will happen ]

Remark: