Corrosion is basically an

altered reaction in presence of H

union between light metal and heavy metal

altered reaction in presence of H

279 + Mcqs in Metals and Their Compounds in Chemistry Page 1 McqOptions

1.	The metal constituent of chlorophyll is
A.	Iron
B.	Potassium
C.	Manganese
D.	Magnesium
Answer» E.

Discussion

2.	Which one of the following has coloured ion ?
A.	Cu
B.	Ag
C.	Zn
D.	Ni
Answer» E.

Discussion

3.	The oxidation state of chromium in K₂ Cr₂ O₇ is
A.	+6
B.	+3
C.	+7
D.	+4
Answer» B. +3

Discussion

4.	Copper pyrites (CuFeS₂) are concentrated by
A.	electromagnetic method
B.	gravity method
C.	froth floatation method
D.	all of above methods
Answer» D. all of above methods

Discussion

5.	The oxidation number of Fe in Fe₃O₄ is
A.	+2
B.	2/3
C.	+3
D.	8/3
Answer» E.

Discussion

6.	Corrosion is basically an
A.	interaction
B.	union between light metal and heavy metal
C.	electrochemical phenomenon
D.	altered reaction in presence of H
E.	O
Answer» D. altered reaction in presence of H

Discussion

7.	Which of the following is largest ?
A.	CI
B.	S
C.	Na
D.	None of these
Answer» B. S

Discussion

8.	The nature of an aqueous solution of FeCl₂ is
A.	basic
B.	acidic
C.	amphoteric
D.	neutral
Answer» C. amphoteric

Discussion

9.	A certain metal M is used to prepare an antacid, which is used as a medicine for acidity. This metal accidently catches fire, which can not be extinguished by using CO₂ based extinguishers. The metal M is
A.	Mg
B.	Ba
C.	Be
D.	Ca
Answer» B. Ba

Discussion

10.	MgCI_2. 6H₂ O, when heated, gives
A.	magnesium hydride
B.	magnesium chloride
C.	magnesium oxide
D.	magnesium oxchloride
Answer» C. magnesium oxide

Discussion

11.	The process of converting hydrate Al₂O₃ into anhydrous aluminium is known as
A.	Smelting
B.	Roasting
C.	Calcination
D.	Dressing
Answer» D. Dressing

Discussion

12.	Mond's process is used for preparing
A.	Ni
B.	H
C.	SO
D.	NH
E.	HNO
Answer» B. H

Discussion

13.	Which of the following is not efflorescent ?
A.	CuSO
B.	NaOH
C.	Na
D.	SO
E.	MgSO
Answer» C. Na

Discussion

14.	Lunar caustic is
A.	NaOH
B.	NaNO
C.	AgNO
D.	Ag
E.	SO
Answer» D. Ag

Discussion

15.	The second most common element in the universe is
A.	H
B.	N
C.	O
D.	Si
Answer» E.

Discussion

16.	The element with electronic configuration 3a⁵ 4s¹ is
A.	Metalloid
B.	Non-metal
C.	Tansition metal
D.	Noble gas
Answer» D. Noble gas

Discussion

17.	In the extraction of silver, Ag₂S is dissolved in
A.	HNO
B.	H
C.	SO
D.	HCI
E.	KCN
Answer» E. KCN

Discussion

18.	The purple colour of [Ti(H₂O)₆]³⁺ ion due to
A.	Ttransfer of an electron
B.	Intermolecular vibrations
C.	Presence of water molecules
D.	Unpaired d-electron
Answer» E.

Discussion

19.	Which of the following is known as salt peter ?
A.	NaCI
B.	KNO
C.	Na
D.	CO
E.	NaHCO
Answer» C. Na

Discussion

20.

Match the List-I (compound) with List-II (chemical name) and select the correct answer using the codes given below the Lists
List-I (Compound) List-II (Chemical name)
F. Bleaching powder 1. Calcium oxychloride
G. Gypsom 2. Calcium sulphate
H. Marble 3. Calcium carbonate
Codes
F G H
A. 1 2 3
B. 2 3 1
C. 1 3 2
D. 2 1 3

A.

B.

C.

D.

Answer» B. B.

Discussion

21.	Which of the following gases is evolved when curpric sulphide (CuS) is dissolved in dilute hydrochloric acid (HCI)
A.	S
B.	Cl
C.	H
D.	S
E.	H
Answer» D. S

Discussion

22.	Which of the following ion is diamagnetic here ?
A.	Cu
B.	Zn
C.	Sc
D.	All of these
Answer» E.

Discussion

23.	Which of the following ion is colourless ?
A.	Cu
B.	Ni
C.	Fe
D.	Fe
Answer» B. Ni

Discussion

24.	Consider the following statements 1. Baking soda is used in fire extinguishers 2. Quick lime is used in the manufacture of glass 3. Gypsom is used in manufacture of plaster of paris Which of the statements given above is/are correct ?
A.	1 and 2
B.	2 and 3
C.	1 only
D.	1, 2 and 3
Answer» E.

Discussion

25.	Calcium decomposes cold water into
A.	Ca(OH)
B.	CaH
C.	O
D.	CaO
Answer» B. CaH

Discussion

26.	Which of the following metal ions plays an important role in the muscle contraction ?
A.	Na
B.	K
C.	Mg
D.	Ca
Answer» E.

Discussion

27.	Which of the following is corrosive sublimate ?
A.	HgBr
B.	HgCl
C.	Hg
D.	Cl
E.	HgSO
Answer» C. Hg

Discussion

28.	In Nessler's reagent, the ion present is
A.	HgI
B.	HgI
C.	Hg
D.	Hg
Answer» E.

Discussion

29.	Calcium decomposes water and liberates
A.	H
B.	O
C.	CaO
D.	CaO
Answer» B. O

Discussion

30.

Match the following
List-I List-II
F. AI 1. Haematite
G. Ag 2. Cryolite
H. Fe 3. Cassiterite
J. Iron 4. Argentite
Codes :
F G H J
A. 2 4 3 1
B. 3 2 1 4
C. 4 2 1 3
D. 2 3 4 1

A.

B.

C.

D.

Answer» B. B.

Discussion

31.	MnO^-₄ on reduction in acid medium forms
A.	MnO
B.	MnO
C.	Mn
D.	Mn
Answer» E.

Discussion

32.	The molecular formula of chromyl chloride is
A.	CrO
B.	Cl
C.	CrOCl
D.	CrCl
E.	CrCl
Answer» B. Cl

Discussion

33.	Which of the following is highly corrosive salt ?
A.	FeCl
B.	HgCl
C.	PbCl
D.	Hg
E.	Cl
Answer» C. PbCl

Discussion

34.	Which one of the following does not participate in Solvey's process for the manufacture of Ma₂CO₃ ?
A.	CO
B.	NH
C.	H
D.	SO
E.	NaCl
Answer» D. SO

Discussion

35.	The aqueous solution containing which one of the following ions will be colourless ?
A.	SC
B.	Fe
C.	Fe
D.	Mn
Answer» B. Fe

Discussion

36.	Pyrolusite is
A.	MnO
B.	Mn
C.	O
D.	MnO
E.	SnO
Answer» D. MnO

Discussion

37.

Match the following
List-I List-II
F. Zn 1. Amalagamation
G. Ag 2. Self reduction
H. Fe 3. Carbon reduction
J. Ca 4. carbon monoxide reduction
K. Cu 5. Fused salt electroysis
Codes :
F G H J K
A. 3 1 4 5 2
B. 2 4 3 1 5
C. 5 1 2 4 3
D. 5 3 4 2 1

A.

B.

C.

D.

Answer» B. B.

Discussion

38.

March the List-I with List-II and select the correct answer using the codes given below the Lists
List-I (Mineral) List-II (Industries in which largely used)
F. Lime stone 1. Cement
G. Copper 2. Electrical goods
H. Bauxite 3. Manufacture aeroplanes
J. Manganese 4. Steel
Codes
F G H J
A. 1 2 3 4
B. 2 3 1 4
C. 4 3 2 1
D. 3 4 1 2

A.

B.

C.

D.

Answer» B. B.

Discussion

39.	Which of the following is used in making ointment for curing skin disease ?
A.	ZnCO
B.	ZnSO
C.	ZnO
D.	ZnS
Answer» B. ZnSO

Discussion

40.	When sodium bicarbonate is heated the product obtained is
A.	Na
B.	NaCO
C.	NaHCO
D.	Na
E.	OC
Answer» E. OC

Discussion

41.	Which of the following compounds is used as a yellow pigment in making oil and water colours ?
A.	Cd
B.	O
C.	CdS
D.	Cd(OH)
E.	CdO
Answer» C. CdS

Discussion

42.	Gold dissolves in aqua regia to produce
A.	AuCl
B.	HAuCl
C.	HauCl
D.	[Au(CN)
E.	]
Answer» C. HauCl

Discussion

43.	Which of the following alkaline earth metals has the highest ionic mobility in an aqueous solution ?
A.	Ba
B.	Mg
C.	Ca
D.	Be
Answer» B. Mg

Discussion

44.	Consider the following elements 1. cobalt 2. phosphorous 3. Zinc Which of the above elements are required for the maintaining healthy human body ?
A.	1 and 2
B.	2 and 3
C.	1 and 3
D.	1, 2 and 3
Answer» E.

Discussion

45.

Match the List-I with List-II and select the correct answer using the codes given below the Lists
List-I List-II
F. German silver 1. Tin
G. Solder 2. Nickel
H. Bleachin powder 3. Sodium
J. Hypo 4. Chlorine
Codes :
F G H J
A. 1 2 4 3
B. 2 1 3 4
C. 1 2 3 4
D. 2 1 4 3

A.

B.

C.

D.

Answer» E.

Discussion

46.

Match the List-I with List-II and select the correct answer using the codes given below the Lists
List-I List-II
F. Potassium bromide 1. Fertiliser
G. Potassium nitrate 2. Photography
H. Potassium sulphate 3. Bakery
J. Monopotassium tartarate 4. Gunpowder
Codes :
F G H J
A. 2 4 1 3
B. 2 4 3 1
C. 4 2 3 1
D. 4 2 1 3

A.

B.

C.

D.

Answer» B. B.

Discussion

47.	Which of the following is obtained when cadmium chloride is treated with water ?
A.	CdCl
B.	Cd(OH)
C.	CdO
D.	Cd
E.	O
Answer» C. CdO

Discussion

48.	Which of the following is formed when cadmium reacts with H₂S ?
A.	CdS
B.	CdS
C.	CdH
D.	Cd
E.	S
Answer» B. CdS

Discussion

49.	The nature of aqueous solution of FeCl₃ is
A.	Neutral
B.	Basic
C.	Amphoteric
D.	Acidic
Answer» E.

Discussion

50.	The mixture of MgCl₂ and MgO is called
A.	Pseudo alum
B.	Sorel's cement
C.	Portland cement
D.	Alum
Answer» C. Portland cement

Discussion

Explore topic-wise MCQs in Chemistry.

The metal constituent of chlorophyll is

Which one of the following has coloured ion ?

The oxidation state of chromium in K2 Cr2 O7 is

Copper pyrites (CuFeS2) are concentrated by

The oxidation number of Fe in Fe3O4 is

Corrosion is basically an

Which of the following is largest ?

The nature of an aqueous solution of FeCl2 is

A certain metal M is used to prepare an antacid, which is used as a medicine for acidity. This metal accidently catches fire, which can not be extinguished by using CO2 based extinguishers. The metal M is

MgCI2. 6H2 O, when heated, gives

The process of converting hydrate Al2O3 into anhydrous aluminium is known as

Mond's process is used for preparing

Which of the following is not efflorescent ?

Lunar caustic is

The second most common element in the universe is

The element with electronic configuration 3a5 4s1 is

In the extraction of silver, Ag2S is dissolved in

The purple colour of [Ti(H2O)6]3+ ion due to

Which of the following is known as salt peter ?

Match the List-I (compound) with List-II (chemical name) and select the correct answer using the codes given below the ListsList-I (Compound)List-II (Chemical name)F. Bleaching powder1.Calcium oxychlorideG. Gypsom2.Calcium sulphateH. Marble3.Calcium carbonateCodesFGHA.123B.231C.132D.213

Which of the following gases is evolved when curpric sulphide (CuS) is dissolved in dilute hydrochloric acid (HCI)

Which of the following ion is diamagnetic here ?

Which of the following ion is colourless ?

Consider the following statements1. Baking soda is used in fire extinguishers2. Quick lime is used in the manufacture of glass3. Gypsom is used in manufacture of plaster of parisWhich of the statements given above is/are correct ?

Calcium decomposes cold water into

Which of the following metal ions plays an important role in the muscle contraction ?

Which of the following is corrosive sublimate ?

In Nessler's reagent, the ion present is

Calcium decomposes water and liberates

Match the followingList-IList-IIF. AI1.HaematiteG. Ag2.CryoliteH. Fe3.CassiteriteJ. Iron4.ArgentiteCodes :FGHJA.2431B.3214C.4213D.2341

MnO-4 on reduction in acid medium forms

The molecular formula of chromyl chloride is

Which of the following is highly corrosive salt ?

Which one of the following does not participate in Solvey's process for the manufacture of Ma2CO3 ?

The aqueous solution containing which one of the following ions will be colourless ?

Pyrolusite is

Match the followingList-IList-IIF. Zn1.AmalagamationG. Ag2.Self reductionH. Fe3.Carbon reductionJ. Ca4.carbon monoxide reductionK. Cu5.Fused salt electroysisCodes :FGHJKA.31452B.24315C.51243D.53421

March the List-I with List-II and select the correct answer using the codes given below the ListsList-I (Mineral)List-II (Industries in which largely used)F. Lime stone1.CementG. Copper2.Electrical goodsH. Bauxite3.Manufacture aeroplanesJ. Manganese4.SteelCodesFGHJA.1234B.2314C.4321D.3412

Which of the following is used in making ointment for curing skin disease ?

When sodium bicarbonate is heated the product obtained is

Which of the following compounds is used as a yellow pigment in making oil and water colours ?

Gold dissolves in aqua regia to produce

Which of the following alkaline earth metals has the highest ionic mobility in an aqueous solution ?

Consider the following elements1. cobalt2. phosphorous3. ZincWhich of the above elements are required for the maintaining healthy human body ?

Match the List-I with List-II and select the correct answer using the codes given below the ListsList-IList-IIF. German silver1.TinG. Solder2.NickelH. Bleachin powder3.SodiumJ. Hypo4.ChlorineCodes :FGHJA.1243B.2134C.1234D.2143

Match the List-I with List-II and select the correct answer using the codes given below the ListsList-IList-IIF. Potassium bromide1.FertiliserG. Potassium nitrate2.PhotographyH. Potassium sulphate3.BakeryJ. Monopotassium tartarate4.GunpowderCodes :FGHJA.2413B.2431C.4231D.4213

Which of the following is obtained when cadmium chloride is treated with water ?

Which of the following is formed when cadmium reacts with H2S ?

The nature of aqueous solution of FeCl3 is

The mixture of MgCl2 and MgO is called

The oxidation state of chromium in K₂ Cr₂ O₇ is

Copper pyrites (CuFeS₂) are concentrated by

The oxidation number of Fe in Fe₃O₄ is

The nature of an aqueous solution of FeCl₂ is

A certain metal M is used to prepare an antacid, which is used as a medicine for acidity. This metal accidently catches fire, which can not be extinguished by using CO₂ based extinguishers. The metal M is

MgCI_2. 6H₂ O, when heated, gives

The process of converting hydrate Al₂O₃ into anhydrous aluminium is known as

The element with electronic configuration 3a⁵ 4s¹ is

In the extraction of silver, Ag₂S is dissolved in

The purple colour of [Ti(H₂O)₆]³⁺ ion due to

Consider the following statements
1. Baking soda is used in fire extinguishers
2. Quick lime is used in the manufacture of glass
3. Gypsom is used in manufacture of plaster of paris
Which of the statements given above is/are correct ?

Match the following
List-I List-II
F. AI 1. Haematite
G. Ag 2. Cryolite
H. Fe 3. Cassiterite
J. Iron 4. Argentite
Codes :
F G H J
A. 2 4 3 1
B. 3 2 1 4
C. 4 2 1 3
D. 2 3 4 1

MnO^-₄ on reduction in acid medium forms

Which one of the following does not participate in Solvey's process for the manufacture of Ma₂CO₃ ?

Match the following
List-I List-II
F. Zn 1. Amalagamation
G. Ag 2. Self reduction
H. Fe 3. Carbon reduction
J. Ca 4. carbon monoxide reduction
K. Cu 5. Fused salt electroysis
Codes :
F G H J K
A. 3 1 4 5 2
B. 2 4 3 1 5
C. 5 1 2 4 3
D. 5 3 4 2 1

Consider the following elements
1. cobalt
2. phosphorous
3. Zinc
Which of the above elements are required for the maintaining healthy human body ?

Match the List-I with List-II and select the correct answer using the codes given below the Lists
List-I List-II
F. German silver 1. Tin
G. Solder 2. Nickel
H. Bleachin powder 3. Sodium
J. Hypo 4. Chlorine
Codes :
F G H J
A. 1 2 4 3
B. 2 1 3 4
C. 1 2 3 4
D. 2 1 4 3

Which of the following is formed when cadmium reacts with H₂S ?

The nature of aqueous solution of FeCl₃ is

The mixture of MgCl₂ and MgO is called