'Mirage' is an example of:

• refraction of light only
• total internal reflection of light only
• refraction and total internal reflection of light
• dispersion of light only
Correct Option: C  [ refraction and total internal reflection of light ]

Remark:

Which micro-organism is responsible for disease Mumps

• Bacteria
• Virus
• Protozoa
• none of these
Correct Option: B  [ Virus ]

Remark: Mumps, also known as epidemic parotitis, is a viral disease caused by the mumps virus

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

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

Remark:

Body temperature of a healthy human body is usually around:

• 98.4 ?
• 37 ?
• 14.5 ?
• 25 ?
Correct Option: B  [ 37 ? ]

Remark:

Iodoform is used as an:

• antipyretic
• analgesic
• antiseptic
• anaesthetic
Correct Option: C  [ antiseptic ]

Remark:

Which one of the following allows sound waves to travel comparatively faster at 0°C ?

• Water
• Air
• Ice
• Iron
Correct Option: D  [ Iron ]

Remark:

Measles is a disease caused by :

• Bacteria
• Protozoa
• Worm
• Virus
Correct Option: D  [ Virus ]

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.

White lung disease is prevalent among the workers of:

• paper industry
• cement industry
• cotton industry
• pesticide industry
Correct Option: B  [ cement industry ]

Remark:

A fan produces a feeling of comfort during hot weather because:

• fan supplies cool air
• our body radiates more heat in air
• conductivity of air increases
• our perspiration evaporates rapidly
Correct Option: D  [ our perspiration evaporates rapidly ]

Remark: