CURIOUSITY QUIZ: METALS AND NON-METALS

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Test Your knowledge on 'Metals and Nonmetals' prepared exclusively according to the NCERT science curriculum for Class-10 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck!

The above picture depicts the precious metal gold which has been crazed for centuries for its lustre and beauty.

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A highly corrosive and fuming liquid that can even dissolve gold and platinum is named :

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Conce. Hydrochloric acid

Conce. Sulphuric Acid

Conce. Nitric acid

Aqua regia

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Which is the most reactive metal ?

Which is the least reactive metal ?

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Gold and Potassium respectively

Potassium and Gold respectively

Sodium and Gold respectively

Sodium and Silver respectively

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Sodium chloride does not exist as molecules, but aggregates of oppositely charged :

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Atoms

Ions

Radicals

Molecules

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Metals are sonorous . This means that metals :

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Can be drawn into wires.

Can be hammered into thin sheets.

Conduct heat and electricity.

Make a ringing sound when hit.

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This is the only non-metallic element to exist in liquid state :

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Chlorine

Mercury

Bromine

Iodine

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This is the only metallic element to exist in liquid state :

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Metals

Mercury

Bromine

None of these

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This is a silvery grey metal , but turns to liquid state at body temperature when kept over hand:

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Sodium

Gallium

Bromine

Lithium

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Silver articles become black after some time when exposed to air. This is because it reacts with sulphur in the air to form a coating of :

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Silver Nitrate

Silver Carbonate

Silver Sulphide

Silver Oxide

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This metal is so soft that it can be easily cut with a knife:

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Sodium

Calcium

Boron

Magnesium

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Which is the hardest non-metal?

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Diamond

Calcium Carbonate

Silicon Dioxide

Iron Oxide

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Which is the most malleable metal?

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Gold

Silver

Platinum

Aluminum

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Which metal is having the highest electrical conductivity?

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Gold

Silver

Platinum

Aluminum

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Copper reacts with moist carbon dioxide in the air and slowly loses its shiny brown surface and gains a green coat. This green substance is :

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Copper Carbonate

Copper Nitrate

Copper Sulphide

Copper Oxide

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Iron when exposed to moist air for a long time acquires a coating of a brown flaky substance called :

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Rust ( Iron Oxide)

Rust ( Iron Sulphide)

Rust ( Iron Nitrate)

Rust ( Ferrous Sulphare)

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Stainless steel is stainless because of the addition of :

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Mercury

Chromium

Platinum

Carbon

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Why is the percentage of impurity in a sample of 22 carat gold?

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8.3%

9.4%

10%

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In an amalgam, one of the component must be :

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Iron

Mercury

Platinum

Copper

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Solder, an alloy of Lead and Tin (Pb and Sn), used for welding electrical wires together, should have :

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Low melting point and high electrical conductivity

High melting point and high electrical conductivity

High melting point and Low electrical conductivity

Low melting point and Low electrical conductivity

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A nonmetal which is lustrous:

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Sulphur

Chrorine

Bromine

Iodine

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A nonmetal that conducts electricity :

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Sulphur

Graphite

Diamond

Iodine

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Some metal oxides, such as Aluminium oxide, Zinc oxide show both acidic as well as basic behaviour are known as :

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Amphoteric oxides

Acid and Basic oxides

Metallic oxides

Nonmetallic oxides

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What is TRUE about Ionic compounds?

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They have high Boiling and Melting points

They are soluble in Water

They conduct electricity in their aqueous solutions or molten state.

All of these are true.

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A metal which is always found in native state in nature :

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Silver

Gold

Tungsten

All of these are true.

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How metals of high reactivity are generally extracted from their ores ?

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Roasting

Gold

Tungsten

Electrolysis of molten ore

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The surface of metals generally have shiny appearance. This property of the metals is called:

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Ductility

Malleability

Metallic Glare

Metallic Lustre

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What is the colour of Chlorine gas ?

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Yellowish green

Pale blue

Colourless

Greenish yellow

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It is a soft, silvery metal that forms oxides on its surface with oxygen of air even within seconds. It gives a golden yellow colour in a flame test. Identify the metal:

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Sodium

Potasium

Barium

Strontium

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This is the only nonmetal that is a good conductor of electricity:

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Bromine

Diamond

Graphite

Silicon

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Aqua Regia is a highly corrosive fuming liquid that can dissolve gold and other Noble metals. What is the ratio of the concentrated Hydrochloric Acid to the Concentrated Nitric Acid in Aqua Regia?

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2:1

3:1

1:3

1:2

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