Class 10 Metals And Non-metals CBSE Questions & Answers

Class 10 · Metals And Non-metals

This is online test 01 for CBSE class 10 Science Metals and Non-metals.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Pyrolusite is an ore of
  • A
    Al
  • B
    Mn
    Correct
  • C
    Sn
  • D
    Mg
2
The following metals exists in their native state
  • A
    Pt, Au, Ag,
    Correct
  • B
    All of these
  • C
    Ne, He, Ar
  • D
    Fe, Ag, Au
3
\(2Al + F{e_2}{O_3} \to 2Fe + A{l_2}{O_3} + Heat\) this reaction is an example of
  • A
    Roasting
  • B
    Calcinations
  • C
    Double displacement
  • D
    Thermite reaction
    Correct
4
Which process is used for enrichment of oxides ores.
  • A
    Magnetic
  • B
    Chemical reduction
  • C
    Froth flotation
  • D
    Hydraulic washing
    Correct
5
Which of the following alloy is used for joining metals for electrical work
  • A
    Bronze
  • B
    German silver
  • C
    Amalgum
  • D
    Solder
    Correct
6
Copper sulphate \(\left( {{\rm{CuS}}{{\rm{O}}_{\rm{4}}}} \right)\) is
  • A
    green in colour
  • B
    None of these.
  • C
    red in colour
  • D
    Blue in colour
    Correct
7
Galvanisation process involves elements zinc and iron. Which of the two metals is sacrifice ng its life to save the life of other,
  • A
    Both sacrifice each other’s life
  • B
    Zn
    Correct
  • C
    Fe
  • D
    None of these
8
Iron pillar at Delhi is made up of
  • A
    None of these
  • B
    Peat Iron
  • C
    wrought Iron
    Correct
  • D
    Mixture of both peat and wrought
9
“Ringing of bell in the temple” is associated with which property of metal
  • A
    brittle
  • B
    ductility
  • C
    Malleability
  • D
    sonorous
    Correct
10
The melting point of NaCl is
  • A
    \({\rm{1}}0{\rm{4}}{{\rm{7}}^0}{\rm{c}}\)
    Correct
  • B
    \({\rm{1}}{000^0}{\rm{c}}\)
  • C
    \({\rm{1}}{00^0}{\rm{c}}\)
  • D
    \({\rm{1}}0{\rm{7}}{{\rm{4}}^0}{\rm{c}}\)
11
Ayush is putting \({{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\) in the test tube containing water whereas piyush is putting water in the lest tube containing \({{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\). Which of the two is likely to face danger
  • A
    None of the two
  • B
    Piyush
    Correct
  • C
    Both Ayush and Piyush
  • D
    Ayush
12
Before keeping any eatables in the jar, Riya always keeps anhydrous \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) in the bottle to
  • A
    to clean the bottle
  • B
    to absorb moisture
    Correct
  • C
    All of these.
  • D
    kill germs
13
Which element is stored in water and which element is stored in kerosene?
  • A
    Magnesium, sodium
  • B
    Calcium, phosphorus
  • C
    phosphorus, sodium
    Correct
  • D
    Sodium phosphorus
14
Metal which is liquid at room temperature
  • A
    Mercury
    Correct
  • B
    silver
  • C
    head
  • D
    Sodium
15
What are the main impurities present with bauxite ore?
  • A
    All of the above
  • B
    sulphur, Iron oxide
  • C
    silica, calcium carbonate
  • D
    silica, Iron oxide
    Correct