Question 1

Which of the following alloys contains Tin?&#10;A)brass&#10;B)solder&#10;C)duralumin&#10;D)steel

Accepted Answer

Solder is an alloy that contains tin, typically combined with lead or other metals to create a low melting point material used for joining metal parts together.

Question 2

An amalgam of metal has which other element?&#10;A)C&#10;B)Ag&#10;C)Mg&#10;D)Hg

Accepted Answer

An amalgam is an alloy of mercury with another metal, making option D (Hg, which is mercury) the correct answer.

Question 3

Gold is alloyed with which metal to make it harder?&#10;A)Cu&#10;B)Hg&#10;C)Ag&#10;D)C

Accepted Answer

Copper (Cu) is commonly alloyed with gold to increase its hardness and durability.

Question 4

The most abundant metal on the earth is&#10;A)iron&#10;B)gold&#10;C)aluminium&#10;D)copper

Accepted Answer

Aluminium is the most abundant metal in the Earth's crust, making up about 8% of its mass. Iron, while abundant and the core of the Earth is thought to be largely composed of it, is not as abundant in the crust compared to aluminium.

Question 5

Aluminium is extracted from&#10;A)hematite&#10;B)bauxite&#10;C)calamine&#10;D)magnetite

Accepted Answer

Aluminium is extracted from bauxite, which is the primary ore of aluminium. This ore contains aluminium oxide from which aluminium can be extracted.

Question 6

Metallurgy is the process of&#10;A)extracting metals from the Ore&#10;B)roasting the Ore&#10;C)liquefaction of nitrogen&#10;D)adding carbon to the Ore in blast furnace

Accepted Answer

Metallurgy involves extracting metals from their ores, which includes processes like smelting and refining.

Question 7

A metal, which melts on the palm&#10;A)potassium&#10;B)sodium&#10;C)gallium&#10;D)zinc

Accepted Answer

The answer of A metal, which melts on the palm&#10;A)potassium&#10;B)sodium&#10;C)gallium&#10;D)zinc...

Question 8

A lustrous non-metal is&#10;A)diamond&#10;B)iodine&#10;C)sulphur&#10;D)phosphorus

Accepted Answer

Iodine is a lustrous non-metal, characterized by its shiny, metallic appearance in its solid form.

Question 9

Sodium is a&#10;A)silvery white and very soft metal&#10;B)colourless and hard metal&#10;C)silvery white and very hard metal&#10;D)colourless and very soft metal

Accepted Answer

Sodium is a silvery-white, very soft metal that can be cut with a knife at room temperature. It is known for its high reactivity, especially with water.

Question 10

Which of the following is used for making magnets?&#10;A)duralumin&#10;B)magnalium&#10;C)bronze&#10;D)alnico

Accepted Answer

Alnico, an alloy consisting of aluminum, nickel, and cobalt with certain additions of other elements, is used for making permanent magnets.

Question 11

What should be added to pure iron to make stainless steel?&#10;A)nickel and cobalt&#10;B)cadmium and chromium&#10;C)nickel and cadmium&#10;D)chromium and nickel

Accepted Answer

The answer of What should be added to pure iron...

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&#10;A)galvanization&#10;B)electroplating&#10;C)rust&#10;D)reduction

Accepted Answer

The answer of The red or Orange coating that forms...

Question 13

The tip of the lead pencil is made of&#10;A)lead&#10;B)graphite&#10;C)zinc&#10;D)charcoal

Accepted Answer

The answer of The tip of the lead pencil is...

Question 14

The most abundant element in the sun's atmosphere is&#10;A)xenon&#10;B)argon&#10;C)hydrogen&#10;D)oxygen

Accepted Answer

The answer of The most abundant element in the sun's...

Question 15

Ordinary glass is a mixture of&#10;A)sodium silicate, Calcium silicate&#10;B)sodium silicate, Calcium silicate and Silica&#10;C)sodium silicate and Silica&#10;D)none of the above

Accepted Answer

The answer of Ordinary glass is a mixture of&#10;A)sodium silicate,...

Question 16

Glass used for making wind screens of automobiles is&#10;A)hard glass&#10;B)photo chromatic glass&#10;C)safety glass&#10;D)optical glass

Accepted Answer

The answer of Glass used for making wind screens of...

Question 17

Annealing is done to&#10;A)increase brittleness&#10;B)increase Transparency&#10;C)decrease brittleness&#10;D)increase refractive index

Accepted Answer

The answer of Annealing is done to&#10;A)increase brittleness&#10;B)increase Transparency&#10;C)decrease brittleness&#10;D)increase...

Question 18

Steel is preferred over iron in construction of ships because&#10;A)melting point of steel is higher than Iron&#10;B)steel is more uniform than Iron&#10;C)steel does not rust&#10;D)tensile strength of steel is not high

Accepted Answer

The answer of Steel is preferred over iron in construction...

Question 19

The carbon content in steel is&#10;A)0.1 - 5.0%&#10;B)2.0 - 2.5%&#10;C)0.1 - 1.5%&#10;D)less than 0.1

Accepted Answer

The answer of The carbon content in steel is&#10;A)0.1 -...

Question 20

Permanent magnets can be made from&#10;A)Ni steel&#10;B)cobalt steel&#10;C)stainless steel&#10;D)wrought iron

Accepted Answer

The answer of Permanent magnets can be made from&#10;A)Ni steel&#10;B)cobalt...

Question 21

The main constituents of cement are:&#10;A)calcium oxide, silicon dioxide, Aluminium oxide&#10;B)calcium oxide, Iron oxide, Sulphur dioxide&#10;C)magnesium oxide, Silicon dioxide, Aluminium oxide&#10;D)none of these

Accepted Answer

The answer of The main constituents of cement are:&#10;A)calcium oxide,...

Question 22

A thick paste of cement, sand and water is called&#10;A)concrete&#10;B)mortar&#10;C)slurry&#10;D)moderator

Accepted Answer

The answer of A thick paste of cement, sand and...

Question 23

The process of making soap by the hydrolysis of fats and oils with alkalis is called&#10;A)hydrolysis&#10;B)saponification&#10;C)esterification&#10;D)none of these

Accepted Answer

The answer of The process of making soap by the...

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