Related Questions

Choose the word that best completes the sentence : Noise pollution generally receives less attention than ----- air pollution.
A does
B it does
C over
D it does over
Air pollution caused by industrial fumes "has" been studied for years, "but " only recently "has" the harmful effects of noise pollution "become" known.
A 1
B 2
C 3
D 4
Noise pollution generally receives less attention than------ air pollution.
A does
B it does
C over
D it does over
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
In a lead-acid cell, lead is called as
A positive active material
B negative active material
C passive material
D none of the above
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
When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as ________ double cover butt joint.
A Single riveted
B Double riveted
C Multi riveted
D None of these
When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.
A Single riveted
B Double riveted
C Both (A) and (B)
D None of these

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