Welcome to you General Science Quiz - Elements and Metals

Name

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1. Brass gets discoloured in air because of the presence of which of the following gases in air?

A) Oxygen

B) Hydrogen sulphide

C) Carbon dioxide

D) Nitrogen

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2. Which of the following is a non metal that remains liquid at room temperature?

A) Phosphorous

B) Bromine

C) Chlorine

D) Helium

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3. Chlorophyll is a naturally occurring chelate compound in which central metal is

A) copper

B) magnesium

C) iron

D) calcium

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4. Which of the following is used in pencils?

A) Graphite

B) Silicon

C) Charcoal

D) Phosphorous

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5. Which of the following metals forms an amalgam with other metals?

A) Tin

B) Mercury

C) Lead

D) Zinc

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6. Chemical formula for water is

A) NaAlO2

B) H2O

C) Al2O3

D) CaSiO3

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7. The gas usually filled in the electric bulb is

A) nitrogen

B) hydrogen

C) carbon dioxide

D) oxygen

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8. Washing soda is the common name for

A) Sodium carbonate

B) Calcium bicarbonate

C) Sodium bicarbonate

D) Calcium carbonate

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9. Quartz crystals normally used in quartz clocks etc. is chemically

A) silicon dioxide

B) germanium oxide

C) a mixture of germanium oxide and silicon dioxide

D) sodium silicate

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10. Which of the gas is not known as green house gas?

A) Methane

B) Nitrous oxide

C) Carbon dioxide

D) Hydrogen

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Time's up

Time is Up!