laboursonline – MCQs, Mock Tests | IIT JEE IIT JEE Chemistry Of Heavier Metals

Which of the following alloys of iron contains highest percentage of nickel?

1. Nickel steel
2. Stainless steel
3. Invar
4. Alnico.

✅ Correct Answer: 3

Brass is an alloy of

1. Cu, Zn and Sn
2. Cu and Sn
3. Cu and Ni
4. Cu and Zn.

✅ Correct Answer: 4

During electrorefining of copper gold may be recovered from

1. Electrolyte
2. Anode mud
3. Cathode
4. Cathode mud.

✅ Correct Answer: 2

Which of the following alloys of steel contains highest percentage of nickel? .

1. stainless steel
2. Invar
3. Nickel steel
4. Permalloy

✅ Correct Answer: 4

Zinc oxide is

1. Acidic
2. Basic
3. Neutral
4. Amphoteric.

✅ Correct Answer: 4

The percentage of carbon is least in

1. Pig iron
2. Wrought iron
3. Steel
4. Cast iron.

✅ Correct Answer: 2

Which of the following metals does not react with chlorine? None of these.

1. Copper
2. Silver
3. Gold
4. None of these.

✅ Correct Answer: 4

Which of the following compounds is soluble in water?

1. AgCl
2. AgBr
3. Agl
4. AgF.

✅ Correct Answer: 4

Which of the following elements does not exhibit any oxidation states involving d-electrons?

1. Copper
2. Zinc
3. Iron
4. Gold.

✅ Correct Answer: 2

Commercially important ore of lead is

1. Galena
2. Siderite
3. Hematite
4. Sphaterite.

✅ Correct Answer: 1

Iron is protected from rusting by coating it with a thin layer of

1. Mg
2. Ca
3. Zn
4. K.

✅ Correct Answer: 3

Fineness is the term used to express purity of

1. Gold
2. Silver
3. Copper
4. Lead.

✅ Correct Answer: 2

In the manufacture of steel from pig iron the following is used

1. Bessemer converter
2. Muffle furnace
3. Blast furnace
4. Carbon deduction.

✅ Correct Answer: 1

Calamine is an ore of

1. Lead
2. Zinc
3. Tin
4. Mercury

✅ Correct Answer: 2

Which of the following metals may be present in the anode mud during electrorefining of copper? I. Gold II. Iron III. Silver IV. Magnesium.

1. I and II
2. II and IV
3. I and III
4. III and IV

✅ Correct Answer: 1

Bronze is an alloy of copper and

1. Tin
2. Zinc
3. Nickel
4. Tin and zinc.

✅ Correct Answer: 1

Which of the following metals on reaction with hot solution of sodium hydroxide dissolves and liberates hydrogen gas?

1. Hg
2. Ag
3. Fe
4. Zn

✅ Correct Answer: 4

18 carat gold contains

1. 60% gold
2. 18% gold
3. 75% gold
4. 80% gold

✅ Correct Answer: 3

Argyrol is used as mild antiseptic and germicide. It is a colloidal solution of

1. Hg
2. Ag
3. Au
4. As

✅ Correct Answer: 2

The oxide ore of zinc is

1. Calamine
2. Zinc Blende
3. Zincite
4. Cassiterite.

✅ Correct Answer: 3

Which of the following statements is not correct?

1. Wrought iron is ductile, soft and malleable
2. Anneabled steel is soft
3. Tempering increases the hardness of steel
4. Hardness of steel increases with increases in carbon content.

✅ Correct Answer: 4

The most stable oxidation state of copper is

1. Cu (I)
2. Cu (II)
3. Cu (III)
4. Cu (IV).

✅ Correct Answer: 2

90% pure silver has fineness

1. 9
2. 18
3. 900
4. 90

✅ Correct Answer: 3

Quick silver is

1. Ag
2. Hg
3. Sn
4. Pb.

✅ Correct Answer: 2

Which of the following metals occurs in nature in combined as well as in native state?

1. Zinc
2. Gold
3. Mercury
4. Silver

✅ Correct Answer: 4

Quenched steel is None of these.

1. Hard
2. Brittle
3. Both of the above
4. None of these.

✅ Correct Answer: 3

Which of the following is used as antacid in medicines?

1. Milk of magnesia
2. Milk of lime
3. Lime water
4. Baryta.

✅ Correct Answer: 1

Which of the following salts is hexahydrate?

1. Blue vitriol
2. Green vitriol
3. White vitriol
4. Mohrs salt.

✅ Correct Answer: 4

Silver chloride is soluble in

1. Ammonia
2. Sodium thiosulphate
3. Potassium cyanide
4. All of the above.

✅ Correct Answer: 4

Which of the following metals exhibits variable valency due to inert pair effect?

1. Iron
2. Lead
3. Mercury
4. Copper.

✅ Correct Answer: 2

Which of the following sulphides is black in colour ?

1. MnS
2. CdS
3. CoS
4. ZnS.

✅ Correct Answer: 3

The percentage of carbon in steel is in the range

1. 3 - 5%
2. 2 - 3%
3. 1 - 2%
4. 0.1 - 1.5%.

✅ Correct Answer: 4

Which of the following salts is heptahydrate?

1. Green vitriol
2. Mohrs salt
3. Blue vitriol
4. Ferric alum.

✅ Correct Answer: 1

During extraction of iron the flux used is

1. Silica
2. Calcium silicate
3. Lime stone
4. Coke.

✅ Correct Answer: 3

Which of the following statements about ferric chloride is not correct?

1. It is a covalent compound
2. It sublimes on heating
3. Its aqueous solution is basic
4. Anhydrous ferric chloride is dimmer.

✅ Correct Answer: 3

Which of the following elements is present in hemoglobin?

1. Mg
2. Fe
3. Cu
4. Zn.

✅ Correct Answer: 2

In the metallurgy of iron the lime stone addedremoves calcium ions as

1. Slag
2. Gangue
3. Metallic calcium
4. Calcium carbonate

✅ Correct Answer: 4

Photographic films and plates have an essential ingredient of

1. Silver nitrate
2. Silver bromide
3. Sodium chloride
4. Oleic acid.

✅ Correct Answer: 2

Cyanide process is used for the extraction of

1. Agt
2. Cu
3. Au
4. Both (a) and (c).

✅ Correct Answer: 4

Which of the following metals has maximum density?

1. Iron
2. Copper
3. Silver
4. Gold.

✅ Correct Answer: 4

Which one of the following is an ore of silver?

1. Argentite
2. Azurite
3. Cassiterite
4. Cerussite.

✅ Correct Answer: 1

Mercury is transported in metal containers made of

1. Silver
2. Lead
3. Iron
4. Aluminium.

✅ Correct Answer: 3

Parting is the process associated with the purification of

1. Gold
2. Silver
3. Copper
4. Mercury.

✅ Correct Answer: 1

During extraction of iron, obtained at the bottom of blast furnace is known as

1. Steel
2. Wrought iron
3. Cast iron
4. None of these.

✅ Correct Answer: 3