Related Questions

Aluminium bronze contains aluminium and copper in the ratio of
A 50 : 50
B 40 : 60
C 60 : 40
D 10 : 90
The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
A Equal to
B Less than
C More than
D None of these
The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
A 10 to 20 m/min
B 18 to 30 m/min
C 24 to 45 m/min
D 60 to 90 m/min
The machinability of aluminium increases when _________ is added to aluminium.
A Copper
B Magnesium
C Silicon
D Lead and bismuth
Phosphor bronze contains
A 0.5% of phosphorous
B 1% phosphorous
C 2.5% phosphorous
D None of the above
Beryllium bronze contains
A 60% copper and 40% beryllium
B 80% copper and 20% beryllium
C 97.75% copper and 2.25% beryllium
D 99% copper and 1% beryllium
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
A 50 : 20 : 20 : 10
B 40 : 30 : 20 : 10
C 50 : 20 : 10 : 20
D 30 : 20 : 30 : 20
Find out which quotation parts of the following sentences has an error. In recent 'years', automobile emissions 'have disfigured' stone 'carvings', corroded bronze monuments, and 'soil' ancient buildings.
A years
B have disfigured
C carving
D soil
Iron --- weapons and tools in the Bronze Age.
A is generally used
B used
C generally used
D was generally used
The author implies that which of the following developments occurred around the time of the Bronze Age
A The establishment of written records
B A change in the styles of cave painting
C An increase in human skill in the handling of tools
D The prevalence of righthandedness

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