Blood Circulation was discovered by?

• Mary Anderson
• William Harvey
• Virginia Apgar
• Robert Feulgen
Correct Option: B  [ William Harvey ]

Remark: William Harvey an English physician discovered the principle of the circulation of the blood through the body.

Brass gets discoloured in air due to constant exposure in presence of:

• Aluminium sulphide
• Aluminium phosphide
• Hydrogen sulphide
• Hydrogenated wafers
Correct Option: C  [ Hydrogen sulphide ]

Remark:

Which of the following is not correct ?
(a) Exercise does not help in managing psychological discomfort.
(b) Exercise increases cardio-respiratory fitness.
(c) Exercise reduces risk of diabetes.
(d) Exercise helps in managing bone health.

• Exercise does not help in managing psychological discomfort.
• Exercise increases cardio-respiratory fitness.
• Exercise reduces risk of diabetes.
• Exercise helps in managing bone health.
Correct Option: A  [ Exercise does not help in managing psychological discomfort. ]

Remark:

A network of computers and other peripherals that is confined to a relatively small space is call:

• Local Area Network
• Wide Area Network
• Global Network
• Intranet
Correct Option: A  [ Local Area Network ]

Remark:

Which of the following is an Inert Gas?

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

Remark:

What is the name of first Indian Artificial satellite?

• Apollo
• Rohini
• Bhaskara
• Aryabhatta
Correct Option: D  [ Aryabhatta ]

Remark: launched by the Soviet Union on 19 April 1975 and built by the Indian Space Research Organisation (ISRO)

The acid present in the stomach of human beings is:

• HNO₃
• H₂CO₃
• HCl
• H₂SO₄
Correct Option: C  [ HCl ]

Remark:

Einstein received Nobel Prize for his theory of :

• Relativity
• Photoelectricity
• Brownian Motion
• None of these
Correct Option: B  [ Photoelectricity ]

Remark:

Which of the following colours is not seen in a rainbow ?

• Yellow
• Green
• Red
• Brown
Correct Option: D  [ Brown ]

Remark:

'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: