Class 8 Materials Metals And Non Metals CBSE Questions & Answers

Class 8 · Materials Metals And Non Metals

This is Science Class 8 Materials Metals and Non Metals CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Bells in temples are made from metals because they are :
  • A
    malleable
  • B
    heavy
  • C
    ductile
  • D
    sonorous
    Correct
2
Read the following statements : i) Iron is more reactive than Zinc.ii) Zinc displaces Iron from aqueous salt solution.
  • A
    both are wrong.
  • B
    statement i) is correct but ii) is wrong.
  • C
    statement ii) is correct but i) is wrong.
    Correct
  • D
    both are correct.
3
A more reactive metal will have :
  • A
    greater tendency to form compounds
    Correct
  • B
    tendency to remain in free state
  • C
    lesser tendency to form compounds
  • D
    reactivity doesn
4
A metal contains certain impurities within it. This metal should be :
  • A
    less ductile
    Correct
  • B
    if impurity is another metal like antimony then more ductile
  • C
    more ductile
  • D
    unaffected by presence of impurities
5
A mixture of 2 or more elements in solid solution with metal as major component is :
  • A
    alloy
    Correct
  • B
    noble metal
  • C
    ionic compound
  • D
    crystal
6
Copper is more reactive than :
  • A
    Magnesium
  • B
    Iron
  • C
    Silver
    Correct
  • D
    Zinc
7
Read the following statements : i) Copper is considered a base metal.ii) Copper oxidises relatively easily.
  • A
    both are correct
    Correct
  • B
    statement ii) is correct but i) is wrong
  • C
    both are wrong
  • D
    statement i) is correct but ii) is wrong
8
Rust formation is called:
  • A
    deformation
  • B
    corrosion
    Correct
  • C
    illusion
  • D
    aberration
9
Metal alloys can be :
  • A
    decomposed
  • B
    engineered
    Correct
  • C
    biologically modified
  • D
    purified
10
Read the following statements : i) Non-metals combine to form alloys.ii) Metals do not form alloys.
  • A
    statement i) is correct but ii) is wrong.
  • B
    statement ii) is correct but i) is wrong.
  • C
    both are wrong
    Correct
  • D
    both are correct
11
Silver and Gold are least reactive metals hence :
  • A
    they react with each other only
  • B
    they can form polymers
  • C
    they occur in free state in nature
    Correct
  • D
    they occur in combined state in nature
12
Home electrical systems are mostly wired with :
  • A
    gold
  • B
    platinum
  • C
    copper
    Correct
  • D
    silver
13
Read the following statements :i) Nickel, Lead & Zinc are base metals.ii) Base metals do not oxidise or corrode easily.
  • A
    statement ii) is correct but i) is wrong.
  • B
    both are correct
  • C
    statement i) is correct but ii) is wrong
    Correct
  • D
    both are wrong.
14
Zinc is less reactive than
  • A
    Silver
  • B
    Gold
  • C
    Sodium
    Correct
  • D
    Copper
15
The metal which can be used in nuclear power plants to produce energy is :
  • A
    Platinum
  • B
    Barium
  • C
    Radium
  • D
    Plutonium
    Correct