Metals and Their Compounds: MCQ Test
50 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 of 50
Which process is not beneficial to prevent rusting of ore?
- AAnnealing
- Bgrease
- Czinc plating
- Dto paint
Question 2 of 50
Which metal is protected by its own oxide?
- AIron
- Bsilver
- CSleep
- Daluminum
Question 3 of 50
Which statement is false for 'bleaching powder'?
- AIt is more soluble in water
- BIt is a light yellow powder
- CIt is an oxidizing agent.
- DIt releases chlorine when reacted with dilute acids.
Question 4 of 50
An amalgam always has a plate
- AIron
- BCopper
- CZinc
- DMercury
Question 5 of 50
Yellow lamps are widely used in street lighting these days. Which of the following is used in these lamps?
- Asodium
- BNeon
- Chydrogen
- Dnitrogen
Question 6 of 50
In copper sulphate, sodium carbonate and gypsum, the number of crystallization water molecules is
- A5, 10 and 2 respectively
- B10, 2 and 5 respectively
- C5, 2 and 10 respectively
- D2, 5 and 10 respectively
Question 7 of 50
Sodium carbonate is commonly known as
- Abaking soda
- BWashing soda (washing soda)
- CCaustic Soda
- DCaustic potash
Question 8 of 50
Which of the following is not an ore of iron?
- ACuprite
- BHematite
- CMagnetite
- DSiderite
Question 9 of 50
The metal that can be cut with a knife is-
- Arepentance
- BIron
- Clead
- Dsodium
Question 10 of 50
What is the popular name of 'washing soda'?
- Acalcium carbonate
- BMagnesium Carbonate
- Csodium carbonate
- Dpotassium carbonate
Question 11 of 50
Which gas is filled in a normal tube light (fluorescent bulb)?
- ASodium vapor with argon
- BOn sodium with neon
- CMercury vapor with argon
- DMercury vapor with neon
Question 12 of 50
Which of the following metals is found in the free state?
- Aaluminum
- BSleep
- CIron
- DCC
Question 13 of 50
The chemical formula of quick lime is
- ACaO
- BCa(OH)²
- CCaCO³
- DCaCl²
Question 14 of 50
Dolomite is the ore of which of the following metals?
- Astrontium
- Bpotassium
- Caluminum
- DCalcium
Question 15 of 50
The chemical formula of Blue Vitriol is—
- ANa²S²O³5H²O
- BNa²CO³ 10H²O
- CNa²SO⁴ 10H₂O
- DCuSO⁴5H²O
Question 16 of 50
Aluminium metal is extracted from bauxite by—
- Aby fractional distillation
- Bby electrolysis
- Cby sublimation
- Dchromatographically
Question 17 of 50
What is the chemical name of quicklime?
- Acalcium chloride
- Bcalcium oxide
- Ccalcium hydroxide
- Dcalcium carbonate
Question 18 of 50
The chemical name of Blue Vitriol is-
- AFerrous Sulphate Heptahydrate
- BZinc Sulfate Heptidate
- Ccopper sulphate pentahydrate
- Dsodium sulfate decahydrate
Question 19 of 50
green basic carbonate layer forms on a metal when exposed to air for some time. That metal is
- Acopper
- Bsilver
- CNickel
- Dzinc
Question 20 of 50
The base used as an ant acid is-
- Acalcium hydroxide
- BVarium Hydroxide
- Cmagnesium hydroxide
- Dsilver hydroxide
Question 21 of 50
Which of the following metals is used in storage batteries?
- Acopper
- Blead
- Caluminum
- Dzinc
Question 22 of 50
Name the only metal that is antibacterial.
- Asodium
- Baluminum
- CIron
- Dcopper
Question 23 of 50
The chemical formula of calomel is
- AHgCl₂
- BHg² Cl²
- CHg
- DHgso
Question 24 of 50
The chemical formula of the chemical used as 'Makara Dhwaj' in medicines is
- AHgCl²
- BHg²Cl₂
- CHg
- DHgso⁴
Question 25 of 50
Which of the following statements is correct about bleaching powder and DDT?
- ABoth are inorganic compounds. Both contain chlorine compounds.
- BBoth are organic compounds
- CBoth contain chlorine compounds.
- DBoth contain calcium compounds.
Question 26 of 50
The alloy containing ............ is called 'Amalgam'.
- AMercury
- BNickel
- Csilver
- DCobalt
Question 27 of 50
'Green Vitriol' or 'Green Kasis' is the popular name of which chemical substance?
- Acopper sulphate
- Bzinc sulphate
- CMagnesium Sulfate
- Dferrous sulfate
Question 28 of 50
Which of the following are metals?
- ACa
- BHg
- CN
- DMn
Question 29 of 50
Bauxite ore is—
- Aof iron
- Bof aluminum
- Ccopper
- DOf gold
Question 30 of 50
The best conductor of electricity among the following is
- AIron
- Bsilicon
- CCopper
- Dceramic
Question 31 of 50
White Vitriol is
- ACuSO⁴ 5H²O
- BZnSO⁴ 7H²o
- CFeSO⁴ 7H²O
- DMgSO⁴7H²O
Question 32 of 50
The molecular formula of common salt is
- ANaCl
- BNaNO²
- CMgCl²
- DCaCl²
Question 33 of 50
Why do silver utensils turn black after some time?
- ADue to the formation of nitrate coating on silver
- BDue to the formation of sulphide coating on silver
- CDue to formation of chloride coating on silver
- DDue to the formation of an oxide coating on the square
Question 34 of 50
The trade name of lead oxide (PbO) is
- ALitharge
- BGalena
- CCinnabar
- DRutile
Question 35 of 50
The salt found in the highest quantity in sea water is
- Asodium chloride
- Bzinc oxide
- Csodium carbonate
- Dmagnesium chloride
Question 36 of 50
Solder is an alloy of which of the following?
- ACu and Sn
- BFe and Zn
- CPb and Sn
- DAg and Zn
Question 37 of 50
From a chemical point of view, vermilion is
- Acalcium carbonate
- Bpotassium nitrate
- Cpotassium sulfide
- DMercury || Sulphide
Question 38 of 50
Lithopone is
- ABaSO⁴ + ZnS
- BBaS + ZnSO⁴
- CBaSO³+ ZnSO⁴
- DZnSO³+ BaSO⁴
Question 39 of 50
What causes Minamata disease?
- AMercury
- BCC
- CCadmium
- Dzinc
Question 40 of 50
Silver articles turn black when kept in the open for a long time due to the formation of which of the following?
- AH²S
- BAgS
- CAgSO⁴
- DAgS
Question 41 of 50
Sodium bicarbonate is useful in extinguishing fire because—
- AWhen heated, it decomposes and produces carbon dioxide, which extinguishes the fire.
- BIt acts as a cover for the fire.
- CIt releases water which extinguishes the fire
- DThis produces foam, which extinguishes the fire.
Question 42 of 50
In an incandescent electric bulb, the filament is made of which metal?
- Aaluminum
- Bcopper
- Ctungsten
- Dsilver
Question 43 of 50
Which of the following oxides shows both acidic and basic properties
- Azinc oxide
- Bcopper oxide
- Cmagnesium oxide
- Dcalcium oxide
Question 44 of 50
When heated in air, vermilion gets converted into oxide of….
- AMercury
- BAntimony
- CCopper
- DCadmium
Question 45 of 50
The chemical composition of rust is
- AFeO
- BFe²O³
- CFe²O³xH²O
- DFe³O⁴xH²O
Question 46 of 50
Common alum is
- AK²SO⁴ AL²(SO)⁴ 24H²O
- BK²SO⁴ Al,² SO³)⁴ 21H²O
- CK²SO⁴ AL²(SO⁴) ³18H²0
- DK²SO⁴ Fe ²(90⁴)³ 24H²0
Question 47 of 50
Which of the following salts is found in the highest quantity in human bones?
- Amagnesium chloride
- Bcalcium carbonate
- Ccalcium phosphate
- Dsodium chloride
Question 48 of 50
Industrially manufactured by the Solvay process
- Aammonia
- Bchlorine
- Csodium carbonates
- Dsulfuric acid
Question 49 of 50
Mercury is commonly used in thermometers because of its properties.
- Ahigh density
- Blow liquidity
- CHigh operating power
- Dhigh specific heat
Question 50 of 50
Which of the following materials is most elastic?
- Arubber
- Bsteel
- Cglass
- Dplastic