The motion of which particle through a metallic wire is called electric current?

• Electron
• Positron
• Neutron
• Photon
Correct Option: A  [ Electron ]

Remark:

Widal test is employed to diagnose:

• Typhoid
• Cholera
• Tuberculosis
• AIDS
Correct Option: A  [ Typhoid ]

Remark:

The phenomenon of radioactivity was discovered by:

• Marie Curie
• Pierre Curie
• Henri Becquerel
• J J Thomson
Correct Option: C  [ Henri Becquerel ]

Remark:

The sex of a child before birth can be determined by:

• Amnoscopy
• Amniocentesis
• Amniograpghy
• None of these
Correct Option: B  [ Amniocentesis ]

Remark:

Which of the following pairs is incorrect ?

(A) Roentgen : X-ray

(B) Newton : Law of gravitation

(C) Faraday : Diffusion of gases

(D) Pasteur : Bacteriology

• Roentgen : X-ray
• Newton : Law of gravitation
• Faraday : Diffusion of gases
• Pasteur : Bacteriology
Correct Option: C  [ Faraday : Diffusion of gases ]

Remark:

Which of the following retains the information when the power to the system is shut down?

• CPU
• ROM
• RAM
• DIMM
Correct Option: B  [ ROM ]

Remark:

Which among the following is the major cause of acid rain ?

• Carbon dioxide
• Carbon monoxide
• Oxygen
• Nitrogen dioxide
Correct Option: D  [ Nitrogen dioxide ]

Remark:

Who invented the contact lens?

• Enrico Fermi
• Adolf Gaston Eugen Fick
• Sandford Fleming
• Benoit Fourneyron
Correct Option: B  [ Adolf Gaston Eugen Fick ]

Remark:

A man inside a moving train tosses a coin, the coin falls behind him. The train is moving:

• forward with a uniform speed
• backward with a uniform speed
• forward with deceleration
• forward with acceleration
Correct Option: D  [ forward with acceleration ]

Remark:

What is the scientific name of Vitamin- C :

• Turtaric Acid
• Folic Acid
• Ascorbic Acid
• Oxalic Acid
Correct Option: C  [ Ascorbic Acid ]

Remark: