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Metals and Non Metals

Description: Metals and Non Metals
Number of Questions: 20
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Tags: Chemistry Physical Properties of Metals Physical Properties of Non-metals Reaction with water, acids, bases and displacement reactions Materials : Metals and Non-Metals
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Which gas is emitted when metals react with acids?

  1. Carbon

  2. Oxygen

  3. Carbon dioxide

  4. Hydrogen

  5. Hydrogen chloride

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Correct Option: D
Explanation:

Hydrogen gas is emitted when metals react with acids.

Metals produce sound when hit by an object. This quality is known as being ________________.

  1. brittle

  2. malleable

  3. ductile

  4. sonorus

  5. metallic

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Correct Option: D
Explanation:

Metals produce sound when hit by an object. This quality is known as being sonorus. The bells are made of iron because it is sonorus.

The oxides formed by metals are ______________________.

  1. always basic

  2. always acidic

  3. always neutral

  4. both acidic and basic

  5. both acidic and neutral

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Correct Option: A
Explanation:

Metal oxides are basic in nature because they react with diluted acids to form salt and water. They also dissolve in water to form metal hydroxides which are alkaline in nature. These metal hydroxides release OH- ions, so they are always basic.

Which of the following statements is/are correct?

  1. All non metals are ductile.
  2. Non metals do not react with acids.
  3. Bromine is a liquid non-metal.

  1. Only 1

  2. Only 2

  3. Only 3

  4. Both 1 and 2

  5. Both 2 and 3

Show answer
Correct Option: E
Explanation:

This is the correct option. Both statements are correct. Non-metals do not react with acids. Bromine is a liquid non-metal.

Which of the following is a metal that can be easily cut with a knife?

  1. Gold

  2. Silver

  3. Mercury

  4. Sodium

  5. Copper

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Correct Option: D
Explanation:

Sodium is a soft metal, and hence can be easily cut with a knife.

Which of the following is the odd one out?

  1. Sodium
  2. Magnesium
  3. Aluminium
  4. Sulphur
  5. Potassium

  1. 1

  2. 2

  3. 3

  4. 4

  5. 5

Show answer
Correct Option: D
Explanation:

Sodium, magnesium, aluminium and potassium are all metals. Sulphur is the only non-metal in this group.

Non-metals tend to be highly volatile (easily vaporised), have low elasticity, and are good insulators of heat and electricity. Which of the following is a non metal?

  1. Mercury

  2. Sodium

  3. Phosphorus

  4. Gold

  5. Copper

Show answer
Correct Option: C
Explanation:

Phosphorus is a non-metal.

Metals have many qualities like malleability and ductility. However, one of the following options is very brittle. Which one is the most brittle metal?

  1. Gold

  2. Silver

  3. Copper

  4. Sulphur

  5. Potassium

Show answer
Correct Option: D
Explanation:

Sulphur is the most brittle metal.

Which of the following metals is not in its pure form?

  1. Zirconium

  2. Tungsten

  3. Zinc

  4. Brass

  5. Copper

Show answer
Correct Option: D
Explanation:

Brass is an alloy. Hence, it is not in its pure form.

Which of the following is/are properties of most non metals?

  1. Non-metals are malleable
  2. Non-metals are ductile
  3. Non-metals are insulators of heat and electricity
  4. Atoms in non-metals are packed in a pattern called lattice

  1. Only 1

  2. Only 2

  3. Only 3

  4. Only 4

  5. Both 3 and 4

Show answer
Correct Option: C
Explanation:

Non-metals are bad conductors of electricity. Most of them are in fact insulators of heat and electricity.

Which of the following is an example of metalloids?

  1. Mercury

  2. Bromine

  3. Silicon

  4. Iron

  5. Copper

Show answer
Correct Option: C
Explanation:

The elements which show some properties of metals as well as non-metals are known as metalloids. Silicon and arsenic are metalloids.

Which of the following metals does not occur in its native form in nature?

  1. Gold

  2. Copper

  3. Aluminium

  4. Sodium

  5. Lead

Show answer
Correct Option: D
Explanation:

Sodium is a highly reactive metal and occurs in the form of its compound in the earth's crust. Thus, it cannot occur in its native form.

Which of the following is a highly un-reactive metal?

  1. Magnesium

  2. Sodium

  3. Iron

  4. Copper

  5. Gold

Show answer
Correct Option: E
Explanation:

Gold is a highly unreactive metal and thus good for making jewellery.

Which of the following is the purest form of matter?

  1. Atom

  2. Molecule

  3. Element

  4. Metal

  5. Metalloid

Show answer
Correct Option: C
Explanation:

Element is the purest form of matter. It consists of all atoms of one kind and cannot be broken further by cooking, heating or by electrolysis.

Which of the following is the hardest substance known to man?

  1. Gold

  2. Iron

  3. Copper

  4. Diamond

  5. Sodium

Show answer
Correct Option: D
Explanation:

Diamond, a form of carbon, is the hardest known substance.

Generally metals are considered as good conductors of electricity. Which of the following metals is the best conductor of electricity?

  1. Gold

  2. Silver

  3. Mercury

  4. Iron

  5. Copper

Show answer
Correct Option: B
Explanation:

Silver is the best conductor of electricity.

Match Column I with Column II.

Column I Column II
1. CuSO4 A. Light green colour
2. FeSO4 B. Blue colour
3. ZnSO4 C. Colourless

  1. 1 - A, 2 - B, 3 - C

  2. 1 - B, 2 - A, 3 - C

  3. 1 - B, 2 - C, 3 - A

  4. 1 - A, 2 - C, 3 - B

  5. 1 - C, 2 - B, 3 - A

Show answer
Correct Option: B
Explanation:

These are all matched correctly. Copper sulphate or CuSO4 is blue in colour. FeSO4 or iron sulphate is light green in colour. ZnSO4 or zinc sulphate is colourless.

Rust is formed by the reaction of _________ and oxygen in the presence of water or air moisture.

  1. iron

  2. calcium

  3. gold

  4. alumunium

  5. silver

Show answer
Correct Option: A
Explanation:

Iron reacts with atmospheric oxygen and moisture to form rust or iron oxide. The rusting of iron is called corrosion.

Which of the following methods can prevent the corrosion of iron?

1. Painting
2. Greasing
3. Alloying
4. Galvanisation
5. Electroplating

  1. 1, 3, and 5

  2. 1, 2, and 4

  3. 1, 2, and 5

  4. 1, 2, 3, and 4

  5. All of them

Show answer
Correct Option: E
Explanation:

 This is the correct option. Painting, greasing, alloying, galvanisation and electroplating are all good methods of prevention of corrosion.

Which of the following statements correctly show the relationship between the more reactive metals and the less reactive metals in a compound?

  1. The more reactive metals overpower the less reactive metals in a compound.

  2. The more reactive metals dissolve the less reactive metals in a compound.

  3. The more rective metals charge the less reactive metals in a compound.

  4. The more reactive metals displace the less reactive metals in a compound.

  5. The more reactive metals replace the less reactive metals in a compound.

Show answer
Correct Option: D
Explanation:

Metals that are more reactive can displace the less reactive metals in a compound.

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