Related Questions

A certain dentist specializes in implanting gold and silver teeth in his patients mouths .He charges $ 650 for a gold tooth an $ 325. for a silver tooth. If his told fees for implanting gold and silver teeth last week were $ 15, 925 in total and he implanted five more gold teeth that silver teeth, how many teeth in total did he implant over the week?
A 33
B 32
C 31
D 34
Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is
A 12
B 36
C 54
D 68
Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel
A 24 %
B 36 %
C 40 %
D 60 %
Percentage of silver in German silver is
A 5
B 10
C 20
D 0
German silver is an alloy of
A Silver and some impurities
B Refined silver
C Nickel, Copper and zinc
D Nickel and copper
German silver used for making utensils is an alloy of
A Copper, silver, nickel
B Copper, zinc, nickel
C Copper, zinc, aluminium
D Copper, nickel, aluminium
German silver, an alloy, does not contain the metal
A Nickel
B Zinc
C Copper
D Silver
German silver in an alloy of
A Copper, nickel and zinc
B Copper, aluminium and silver
C Silver, zinc and aluminium
D Silver, nickel and zinc
In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
A 40
B 50
C 70
D 90
Which of the following is an alloy of nickel and copper?
A Hastelloy
B Duriron
C Monel
D Inconel

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