Related Questions

Tetra-ethyl lead is added in gasoline to
A Increase its smoke point
B Reduce gum formation
C Reduce the pour point
D Increase its octane number
Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
A Hardness in water
B Turbidity in water
C Dissolved oxygen in water
D Residual chlorine in water
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
A Bakelite
B Neoprene
C Teflon
D Nylon-66
Poly tetra flouro ethylene (PTFE) is known as
A Dacron
B Teflon
C Bakelite
D Celluloid
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
The author thinks that true learning will lead to ----
A personal understanding of the ideas of writers
B discovery of unknown world
C revelation of the mysteries of the world
D better expressive powers

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