Monitor of a computer is:

• Input device
• Output device
• Input/Output device
• None of these
Correct Option: B  [ Output device ]

Remark:

Which of the following is not a viral disease ?

• Tuberculosis
• Polio
• Swine flu
• Hepatitis
Correct Option: A  [ Tuberculosis ]

Remark:

If a liquid is heated in space under no gravity, the transfer of heat will take place by process of:

• conduction
• convection
• radiation
• cannot be heated in the absence of gravity
Correct Option: C  [ radiation ]

Remark:

Green leafy vegetable are rich source of :

• Citric acid
• Malic acid
• Folic acid
• none of these
Correct Option: C  [ Folic acid ]

Remark:

Oxygen liberated during photosynthesis comes from:

• water
• carbon dioxide
• glucose
• Both carbon dioxide and glucose.
Correct Option: A  [ water ]

Remark:

Acid rain is caused by

• Humidity
• Pollutant gases
• Population explosion
• None of these
Correct Option: B  [ Pollutant gases ]

Remark:

What is the main property of mercury for using it in a clinical thermometer?

• Good conductor of heat
• High density
• Good conductor of electricity
• Easily available
Correct Option: A  [ Good conductor of heat ]

Remark:

Which among the following diseases are not bacterial?

• Cholera and Diphtheria
• Malaria and trichomonasis
• Tetanus and typhoid
• Tuberculosis and leprosy
Correct Option: C  [ Tetanus and typhoid ]

Remark:

Which quantity is increased in step-down transformer?

• Voltage
• Current
• Wattage
• Frequency
Correct Option: B  [ Current ]

Remark: a step-down transformer the voltage is stepped down, or reduced, and the current is increased.

Vinegar is chemically a:

• diluted citric acid
• diluted acetic acid
• diluted hydrochloric acid
• diluted oxalic aid
Correct Option: B  [ diluted acetic acid ]

Remark: