Related Questions

The ampere-hour efficiency of a leadacid cell is normally between
A 20 to 30%
B 40 to 50%
C 60 to 70%
D 90 to 95%
Which of the following factors adversely affects the capacity of the leadacid battery ?
A Temperature of surroundings
B Specific gravity of electrolyte
C Rate of discharge
D All of the above
The internal resistance of a lead-acid cell is that of Edison cell
A Less than
B More than
C Equal to
D None of the above
The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
A two
B three
C four
D five
As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its
A compactness
B lower e.m.f.
C small quantity of electrolyte used
D higher internal resistance
Percentage of lead in lead pencils is
A 0
B 31-66
C 40
D 80
The metallic sheath may be made of lead or lead alloy or of aluminum.
A Yes
B No
Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes
A Paralysis of muscles & loss of appetite
B Nervous depression
C Gastritis & diarrhea
D All of the above
Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower
A Price
B Corrosion resistance
C Thermal conductivity
D Abundant availability
If white is called black, black is called red, red is called yellow, yellow is called green, green is called blue, blue is called violet and violet is called orange, what would be the colour of human blood?
A green
B black
C red
D yellow

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