Q: Malaria is transmitted from one person to another by:

A: Aedes Mosquito

B: Culex Mosquito

C: Anopheles Mosquito

D: All of the above



Anopheles Mosquito


Q: An electric bulb has a filament made of

A: Boron carbide

B: Tungsten

C: Tantalum

D: Rhenium



Tungsten


Q: Ozone hole refers to :

A: hole in Ozone layer

B: decrease in the Ozone layer

C: decrease in thickness of Ozone layer

D: increase in thickness of Ozone layer



decrease in thickness of Ozone layer


Q: In a forest ecosystem, green plants are

A: the primary producers.

B: the secondary consumers.

C: the decomposers.

D: both secondary consumers and decomposers.



the primary producers.


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

A: Aluminium sulphide

B: Aluminium phosphide

C: Hydrogen sulphide

D: Hydrogenated wafers



Hydrogen sulphide


Q: Which of the following is not a property of acids ?

A: All acids have sour taste

B: All acids are corrosive in nature

C: For acidic solutions pH = <7

D: Acids turn red litmus to blue



Acids turn red litmus to blue


Q: The edible part of potato is

A: Root

B: Tuber

C: Rhizome

D: Corm



Tuber


Q: A radar which detect the presence of an aircraft in sky uses :

A: Sound waves

B: Radio waves

C: Ultrasonic waves

D: Infrared rays



Radio waves


Q: Goverment of India had set up BEE, an autonomous Goverment Agency under Ministry of Power. BEE stands for:

A: Bureau of Energy Efficiency

B: Bureau of Electrical and Electronics

C: Bureau of Enhanced Energy

D: Bureau of Energy Emission



Bureau of Energy Efficiency


Q: Human beings hearing range is:

A: 30 to 30,000 Hz

B: 50 to 50,000 Hz

C: 20 to 20,000 Hz

D: 40 to 40,000 Hz



20 to 20,000 Hz
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