For safety, the fuse wire used in the mains for the household supply of electricity must be made of metal having?
A. low melting point
B. high resistance
C. high melting point
D. low specific heat
Everyday Science MCQS
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For seeing objects at the surface of the water from a submarine under water, the instrument used is?
A. kaleidoscope
B. periscope
C. spectroscope
D. telescope
Fathometer is used to measure?
A. Earthquakes
B. Rainfall
C. Ocean depth
D. Sound intensity
For galvanizing iron which of the following metals is used?
A. Aluminium
B. Copper
C. Lead
D. Zinc
For purifying drinking water alum is used?
A. for coagulation of mud particles
B. to kill bacteria
C. to remove salts
D. to remove gases
Ordinary table salt is sodium chloride. What is baking soda?
A. Potassium chloride
B. Potassium carbonate
C. Potassium hydroxide
D. Sodium bicarbonate
Ozone hole refers to?
A. hole in the ozone layer
B. decrease in the ozone layer in the troposphere
C. decrease in thickness of the ozone layer in the stratosphere
D. increase in the thickness of the ozone layer in the troposphere
Pine, fir, spruce, cedar, larch, and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to?
A. angiosperms
B. gymnosperms
C. monocotyledons
D. dicotyledons
Pollination is best defined as?
A. transfer of pollen from the anther to the stigma
B. germination of pollen grains
C. growth of pollen tube in ovule
D. visiting flowers by insects
Plants receive their nutrients mainly from?
A. chlorophyll
B. atmosphere
C. light
D. soil