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

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

Remark:

Running water is the source of:

• hydel power
• thermal Power
• nuclear power
• None of the Above
Correct Option: A  [ hydel power ]

Remark:

Living in the atmosphere of CO is dangerous because it:

• Reduces organic matter of tissues
• Dries up the blood
• Combined with O₂ present inside to form CO₂
• Combines with haemoglobin and makes it incapable of absorbing oxygen
Correct Option: C  [ Combined with O₂ present inside to form CO₂ ]

Remark:

Marijuana, a psychoactive drug is obtained from:

• seeds of pop
• capsules of poppy
• female inflorescence of cannabis
• male inflorescence of cannabis
Correct Option: C  [ female inflorescence of cannabis ]

Remark:

What is the other name for Vitamin B₂ ?

• Haemoglobin
• Dextrose
• Thiamine
• Riboflavin
Correct Option: D  [ Riboflavin ]

Remark:

When a moving bus suddenly stops, passengers sitting inside leans forward. This is due to

• Conservation of Mass
• Inertia of rest
• Inertia of Motion
• None of these
Correct Option: C  [ Inertia of Motion ]

Remark: Inertia of motion is defined as the property of a body to resist any change to its state of uniform motion.

Which of the following diseases is not caused by virus ?

• Small pox
• AIDS
• Flue
• Malaria
Correct Option: D  [ Malaria ]

Remark:

Bronze is an alloy of:

• Copper and Zinc
• Tin and Zinc
• Copper and Tin
• Iron and Zine
Correct Option: C  [ Copper and Tin ]

Remark:

Which of the following diseases is caused by virus ?

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

Remark:

Magnification produced by a rear view mirror fitted in vehicles:

• is less than the object
• is more than the object
• is equal to the object
• can be more or less than the object depending upon the position of object in front of it.
Correct Option: A  [ is less than the object ]

Remark: