Which chemical element got its name from water?
Hydrogen
Nitrogen
Iodine
Sodium
Which metal will change as a liquid when it is kept at room temperature?
Zinc
Nickel
Mercury
Titanium
Which element is generous in the earth's crust and also in the human body?
Iron
Oxygen
Silicon
Hydrogen
Which element helps in carrying oxygen in red blood cells?
Lead
Boron
Iron
Calcium
Which chemical element is also known as a dangerous poison?
Arsenic
Cyanide
Strychnine
Ricin
Which element does ancient Romans use for plumbing?
Gold
Lead
Aluminum
Titanium
Which of these chemical elements has zero valency?
Argon
Nitrogen
Iron
Magnesium
Which type of metallic element is known as the main component of steel?
Magnesium
Iron
Zinc
Arsenic
From which region of Europe did the elements scandium and thulium get their name?
The Balkans
Iberia
Scandinavia
Baltic
Which compound of chemical element deals with organic chemistry?
Carbon
Potassium
Magnesium
Calcium
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