Removal of carbon particles from air involves the principle of
Precipitation
Filteration
Electrophoresis
Electrophoresis
Which light is least effective in photosynthesis?
Blue light
Green light
Red light
Red light
B.
Green light
Which of the following acts as best adsorbent?
Charcoal
Activated Charcoal
Activated Coconut Charcoal
Activated Coconut Charcoal
Limestone is a raw material used by which industry?
Aluminium
Fertilizers
Cement
Cement
Sour taste of lemon is due to the presence of which of the following?
Citric acid
Acetic acid
Oxalic acid
Oxalic acid
Glycol is used to manufacture which of the following?
Nylon
Artificial silk
Terylene
Terylene
Which of the following greenhouse gases has the greatest heat-trapping ability?
Chlorofluoro carbon
Methane
Carbon dioxide
Carbon dioxide
Where is a transistor most likely to be found?
Wrist watch
Fuse
Hearing Aid
Hearing Aid