Metals and Their Compounds: MCQ Test
25 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 of 25
What is Philosopher's Wool?
- AZnO
- BZnCO³
- CZnS
- DZnSO⁴
Question 2 of 25
Known as Quick Silver
- Aaluminum
- BMercury
- CLatinum
- DPalladium
Question 3 of 25
Which of the following is the hardest metal?
- ASleep
- BIron
- CPlatinum
- Dtungsten
Question 4 of 25
Which of the following metals does not form amalgam?
- Asodium
- Bpotassium
- Ccopper
- DIron
Question 5 of 25
For which mineral are the mines of Jawar located in Rajasthan famous?
- Acopper
- BIron
- Cmica
- Dzinc
Question 6 of 25
green basic carbonate layer forms on a metal when exposed to air for some time. That metal is
- Acopper
- Bsilver
- CNickel
- Dzinc
Question 7 of 25
Which metal was earlier called 'wolfram'?
- Atungsten
- BMolybdenum
- CZinc
- DRadium
Question 8 of 25
Which of the following metals is used in storage batteries?
- Acopper
- Blead
- Caluminum
- Dzinc
Question 9 of 25
What is added to gold to make it hard?
- AIron
- BNickel
- Ccopper
- Dlead
Question 10 of 25
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 11 of 25
Which of the following materials is very hard and very ductile?
- Acarborundum
- Btungsten
- CCast Iron
- DNichrome
Question 12 of 25
The trade name of lead oxide (PbO) is
- ALitharge
- BGalena
- CCinnabar
- DRutile
Question 13 of 25
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 14 of 25
Bleaching powder is prepared by passing through which of the following?
- Achlorine from slaked lime
- Boxygen from slaked lime
- CCO² from the touch of extinguished
- Dchlorine from quicklime
Question 15 of 25
weight of iron when rusted
- Aincreases
- Bdecreases
- Cno change
- Dis converted
Question 16 of 25
The base used as an ant acid is-
- Acalcium hydroxide
- BVarium Hydroxide
- Cmagnesium hydroxide
- Dsilver hydroxide
Question 17 of 25
Red Lead is
- APtSO⁴
- BPbO²
- CPh³O⁴
- DPbCO³
Question 18 of 25
What causes Minamata disease?
- AMercury
- BCC
- CCadmium
- Dzinc
Question 19 of 25
Which of the following is an ore of iron?
- AHematite
- BBauxite
- CCinnabar
- Dlimestone
Question 20 of 25
The reaction of quicklime (CaO) with water to form slaked lime (Ca(OH)²) is an example of what?
- Adisplacement reaction
- Bendothermic reaction
- Cdecomposition reaction
- Dexothermic reaction
Question 21 of 25
The chemical formula of 'Sindoor' (Vermillion) is
- AHgS
- BHgo
- CHg²Cl²
- DHgCl²
Question 22 of 25
Which of the following heating elements is used in electric press?
- Acopper wire
- Bnichrome wire
- Clead wire
- Diron wire
Question 23 of 25
Which of the following is used as a 'rodenticide'?
- AZinc Carbonate
- BZinc Chloride
- CZinc Sulfide
- DZinc Phosphide
Question 24 of 25
Solder is an alloy of which of the following?
- ACu and Sn
- BFe and Zn
- CPb and Sn
- DAg and Zn
Question 25 of 25
What is the chemical name of quicklime?
- Acalcium chloride
- Bcalcium oxide
- Ccalcium hydroxide
- Dcalcium carbonate