Related Questions

Solder is an alloy of
A Copper and aluminium
B Tin and lead
C Nickel, Copper and zinc
D Silver, copper and lead
Solder is an alloy consisting of
A Tin, antimony, copper
B Tin and copper
C Tin and lead
D Lead and zinc
There are n students in a school . If r% among the students are 12 years or younger, which of the following expressions represents the number of students who are solder than 12?
A n(1-r)
B n ( 100-r) /100
C n(1-r)/100
D 100(1-r)n
The composition of silver solder is
A Silver, copper, zinc
B Silver, tin, nickel
C Silver, lead, zinc
D Silver, copper, aluminium
_______ is a hard solder.
A Tin-lead
B Tin-silver-lead
C Copper-zinc
D None of the above
Silver based solder is used for
A Flaring
B Brazing
C Soft soldering
D Fusion welding
Perminvar alloy having constant permeability is an alloy of
A Nickel, copper and iron
B Nickel, copper and zinc
C Copper, nickel and antimony
D Iron, zinc and bismuth
The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.
A Less than
B Equal to
C More than
D Either B or C; depends on the type of alloy
Constantan an alloy used in thermocouples is an alloy of
A Copper and tin
B Copper and zinc
C Copper and iron
D Copper and nickel
By increasing impurity content in the metal alloy the residual resistivity always
A Decreases
B Increases
C Remains constant
D Becomes temperature independent

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