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
Known as 'Adam the Catalyst'
- APlatinum
- BNickel
- CPalladium
- DAlumina
Question 2 of 50
With which of the following is the tape of a tape recorder coated?
- Ablue vitriol
- Bferromagnetic powder
- Czinc oxide
- Dcopper
Question 3 of 50
'Sinwar' (HgS) is the ore of which metal?
- Asilver
- BMercury
- CAluminum
- DSleep
Question 4 of 50
Which is the second most abundant metal found in the Earth's crust?
- AIron
- Baluminum
- Caunt
- Dzinc
Question 5 of 50
Potash alum is useful in water purification because it
- Akills microbes
- BIt removes the hardness of water
- CIt precipitates colloidal solutions
- DIt keeps the water soft
Question 6 of 50
What is the king of metals?
- ASleep
- Bsilver
- CIron
- Daluminum
Question 7 of 50
In which metal vessel is mercury kept?
- ASilber
- Blead
- CIron
- Dzinc
Question 8 of 50
Which of the following is used as a 'rodenticide'?
- AZinc Carbonate
- BZinc Chloride
- CZinc Sulfide
- DZinc Phosphide
Question 9 of 50
Which of the following metals is used in storage batteries?
- Acopper
- Blead
- Caluminum
- Dzinc
Question 10 of 50
For the extraction of which the cyanide method is used?
- Asilver
- BSleep
- Ccopper
- Dzinc
Question 11 of 50
Who extracts mercury?
- AFrom galena
- Bfrom bauxite
- CCinnabar
- DFrom pyrolusite
Question 12 of 50
Cryolite is added in the electrolysis of alumina because
- Ato increase electrical conductivity
- BTo reduce the carbon content of alumina
- CTo reduce the anode effect
- DTo separate impurities from alumina
Question 13 of 50
The alloy containing ............ is called 'Amalgam'.
- AMercury
- BNickel
- Csilver
- DCobalt
Question 14 of 50
Which metal is added to convert iron into steel?
- ARanga
- BManganese
- CCadmium
- DNickel
Question 15 of 50
The 'Heinzclever method' is the commercial method of production of?
- Acaustic soda
- Bnitric acid
- CSulphuric end
- Dbleaching powder
Question 16 of 50
The chemical formula of sodium aluminate is
- ANaOH
- BNa²AIF⁶
- CNaAlO²
- Dnone of these
Question 17 of 50
What is used as bandages in surgery?
- Acalcium sulphate
- Bcalcium chloride
- Caluminum sulfate
- Dcalcium phosphate
Question 18 of 50
The chemical formula of Epsom Salt is
- AZnSO⁴7H²O
- BNa²S0⁴ 10H²O
- CNa²CO³ 10H²O
- DMgSO⁴7H²O
Question 19 of 50
Which of the following statements regarding aluminium is not correct?
- AAluminum hydroxide is amphoteric in nature.
- BAluminum exists in the free state in nature.
- CThe demand for aluminum appliances is higher than that of iron appliances.
- DMetallic methods of producing aluminum are more expensive than those for iron.
Question 20 of 50
The chemical formula of caustic soda is
- ANaOH
- BNaCl
- CNaHCO³
- DNa²CO³
Question 21 of 50
The chemical formula of 'Cinewar' is
- AHgS
- BPbS
- CCuo
- DMgSO⁴
Question 22 of 50
The chemical formula of Green Vitriol is
- ACaSO⁴ 2H² O
- BCuSO⁴ SH²O
- CFSO⁴ TH²O
- DZnSO⁴TH²O
Question 23 of 50
The chemical formula of baking soda is—
- ANa²CO³
- BNa²CO³ H²O
- CNa² CO³ 10H²O
- DNaHCO³
Question 24 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 25 of 50
Which of the following natural substances contains 'Iron' (Fe)?
- Achlorophyll
- Bcollagen
- CCarotene
- Dmyoglobin
Question 26 of 50
Which of the following materials is very hard and very ductile?
- Acarborundum
- Btungsten
- CCast Iron
- DNichrome
Question 27 of 50
The chemical name of Blue Vitriol is-
- AFerrous Sulphate Heptahydrate
- BZinc Sulfate Heptidate
- Ccopper sulphate pentahydrate
- Dsodium sulfate decahydrate
Question 28 of 50
The salt found in the highest quantity in sea water is
- Asodium chloride
- Bzinc oxide
- Csodium carbonate
- Dmagnesium chloride
Question 29 of 50
Which of the following metals does not form amalgam?
- Asodium
- Bpotassium
- Ccopper
- DIron
Question 30 of 50
The following metal pollutes the air when petrol is burnt in vehicles
- AMercury
- Bcadmium
- Clead
- Dcarbon dioxide
Question 31 of 50
What is the pure form of iron?
- Acast iron
- Bwrought iron
- Ccast iron
- DSteel
Question 32 of 50
Aluminium metal is extracted from bauxite by—
- Aby fractional distillation
- Bby electrolysis
- Cby sublimation
- Dchromatographically
Question 33 of 50
It is pure Mona (Pure Gold).
- A18 carats
- B20 carats
- C22 carats
- D24 carat
Question 34 of 50
Baking soda is added to flour because
- AThis makes the rotis tasty.
- BLess water is required to knead the dough
- CBaking soda releases CO², which makes the bread rise.
- DAll of the above
Question 35 of 50
If a piece of sodium is put in water, it
- Awill drown
- Bwill keep floating
- CFloating will burn
- Dwill give smoke
Question 36 of 50
Which of the following pairs is correctly matched?
- ASilver Iodide Horn Silver
- BSilver Chlorite Artificial Rain
- CZinc Phosphide Rat Poison
- DZinc sulfide Zinc sulfide
Question 37 of 50
Which one of the following is the chemical formula of gypsum, a constituent of cement?
- ACa²SiO⁴
- BCaSO⁴ 2H ²O
- CCaO
- DCaSO⁴ 3H ²O
Question 38 of 50
The common name of the chemical compound having the formula NaOH is?
- Acaustic soda
- Bcaustic potash
- CSoda Ash
- Dsodium hydroxide
Question 39 of 50
What is Philosopher's Wool?
- AZnO
- BZnCO³
- CZnS
- DZnSO⁴
Question 40 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 41 of 50
Leaving bleaching powder open for a long time reduces its activity. Why does this happen?
- Areacts with CO² to release CI²
- Breacts with CO² to release O²
- Creacts with CO² to release CH⁴
- Dnone of these
Question 42 of 50
Which of the following does not form an oxide when reacted with oxygen?
- AMagnesium
- Blead
- CTin
- DSilver
Question 43 of 50
The chemical formula of calomel is
- AHgCl₂
- BHg² Cl²
- CHg
- DHgso
Question 44 of 50
Which of the following is the chemical name of common salt?
- Acalcium carbonate
- Bsodium carbonate
- Csodium chloride
- Dnone of these
Question 45 of 50
What is the chemical name of baking soda?
- Asodium carbonate
- Bsodium bicarbonate
- Csodium acetate
- Dsodium hydroxide
Question 46 of 50
Silver is mainly extracted from which ore?
- Aargentite
- BNative Silver
- CKanrajiright
- DCalamine
Question 47 of 50
What is the baking powder used in making double roti?
- Asodium carbonate
- Bsodium bicarbonate
- Csodium sulphate
- Dsodium chloride
Question 48 of 50
The important metal used in making rust-free iron is
- Aaluminum
- BCarbon
- CChromium
- DTin
Question 49 of 50
'Degana' located in Rajasthan is famous for the production of what?
- Alimestone
- Bmarble
- CPlatinum
- Dtungsten
Question 50 of 50
With which substance is human blood mixed and stored in blood cells?
- Asodium nitrate and dextrate
- Bsodium and oxygen
- Coxygen and chlorine
- Dpotassium and calcium chloride