Deck 6: Metal Alloys, Elements, and Processes in Chemistry

Question 1

Which of the following alloys contains Tin?

A)brass
B)solder
C)duralumin
D)steel

Answer 1

solder

Question 2

An amalgam of metal has which other element?

A)C
B)Ag
C)Mg
D)Hg

Answer 2

Hg

Question 3

Gold is alloyed with which metal to make it harder?

A)Cu
B)Hg
C)Ag
D)C

Answer 3

Cu

Question 4

The most abundant metal on the earth is

A)iron
B)gold
C)aluminium
D)copper

Question 5

Aluminium is extracted from

A)hematite
B)bauxite
C)calamine
D)magnetite

Question 6

Metallurgy is the process of

A)extracting metals from the Ore
B)roasting the Ore
C)liquefaction of nitrogen
D)adding carbon to the Ore in blast furnace

Question 7

A metal, which melts on the palm

A)potassium
B)sodium
C)gallium
D)zinc

Question 8

A lustrous non-metal is

A)diamond
B)iodine
C)sulphur
D)phosphorus

Question 9

Sodium is a

A)silvery white and very soft metal
B)colourless and hard metal
C)silvery white and very hard metal
D)colourless and very soft metal

Question 10

Which of the following is used for making magnets?

A)duralumin
B)magnalium
C)bronze
D)alnico

Question 11

What should be added to pure iron to make stainless steel?

A)nickel and cobalt
B)cadmium and chromium
C)nickel and cadmium
D)chromium and nickel

Question 12

The red or Orange coating that forms on the surface of iron when exposed to air and moisture for some time is called

A)galvanization
B)electroplating
C)rust
D)reduction

Question 13

The tip of the lead pencil is made of

A)lead
B)graphite
C)zinc
D)charcoal

Question 14

The most abundant element in the sun's atmosphere is

A)xenon
B)argon
C)hydrogen
D)oxygen

Question 15

Ordinary glass is a mixture of

A)sodium silicate, Calcium silicate
B)sodium silicate, Calcium silicate and Silica
C)sodium silicate and Silica
D)none of the above

Question 16

Glass used for making wind screens of automobiles is

A)hard glass
B)photo chromatic glass
C)safety glass
D)optical glass

Question 17

Annealing is done to

A)increase brittleness
B)increase Transparency
C)decrease brittleness
D)increase refractive index

Question 18

Steel is preferred over iron in construction of ships because

A)melting point of steel is higher than Iron
B)steel is more uniform than Iron
C)steel does not rust
D)tensile strength of steel is not high

Question 19

The carbon content in steel is

A)0.1 - 5.0%
B)2.0 - 2.5%
C)0.1 - 1.5%
D)less than 0.1

Question 20

Permanent magnets can be made from

A)Ni steel
B)cobalt steel
C)stainless steel
D)wrought iron

Question 21

The main constituents of cement are:

A)calcium oxide, silicon dioxide, Aluminium oxide
B)calcium oxide, Iron oxide, Sulphur dioxide
C)magnesium oxide, Silicon dioxide, Aluminium oxide
D)none of these

Question 22

A thick paste of cement, sand and water is called

A)concrete
B)mortar
C)slurry
D)moderator

Question 23

The process of making soap by the hydrolysis of fats and oils with alkalis is called

A)hydrolysis
B)saponification
C)esterification
D)none of these