Persistence of vision is the principle behind:

• Camera
• Binocular
• Cinema
• Periscope
Correct Option: C  [ Cinema ]

Remark:

What is the unit for measuring the intensity of sound ?

• Decibel
• Coulomb
• Henry
• Hertz
Correct Option: A  [ Decibel ]

Remark:

Which one of the following is called the 'power house' of the cell ?

• Golgi body
• Mitochondrion
• Ribosome
• Lysosome
Correct Option: B  [ Mitochondrion ]

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:

Which of the following is chiefly present in LPG?

• Methane
• Ethane
• Propane
• Butane
Correct Option: D  [ Butane ]

Remark:

Which of the following adds/add carbon dioxide to the carbon cycle on the planet earth ?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
(Select correct answer)

• 1, 2 and 4 only
• 1 and 3 only
• 2 only
• 1, 2 and 3 only
Correct Option: A  [ 1, 2 and 4 only ]

Remark:

Which of the following is a communicable disease?

• Measles
• Scurvy
• Asthma
• Diabetes
Correct Option: A  [ Measles ]

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 of the following statements is not correct ?

• Silver Revolution refers to increased pulse production.
• White Revolution refers to increased milk production.
• Green Revolution refers to increased production of food grains.
• Yellow Revolution refers to increased oil-seed production.
Correct Option: A  [ Silver Revolution refers to increased pulse production. ]

Remark:

What is the S.I. unit of electric current?

• Volt
• Watt
• Ampere
• Ohm
Correct Option: C  [ Ampere ]

Remark: