CBSE Questions for Class 10 Chemistry Metals And Non Metals Quiz 6 - MCQExams.com

Non-metals are poor conductors of heat and tend to:
  • Be brittle
  • Conduct an electrical current
  • Have a shiny luster
  • Be malleable
  • Be sonorous
When $$Fe_2O_3$$ is heated with aluminium powder, the products obtained are _______ .
  • $$Fe$$, $$Al_2O_3$$ and heat.
  • $$Fe$$ and $$Al_2O_3$$
  • $$FeO$$, $$Al_2O_3$$ and heat.
  • $$FeO$$ and $$Al_2O_3$$
Which of the following elements are present at the top of the reactivity series?
  • Sodium
  • Potassium
  • Calcium
  • Zinc
Cinnabar is _______ .
  • $$HgS$$
  • $$HgO$$
  • $$HgCl$$
  • $$HgO.HgCl$$
Metals found in a combined state in the earth's crust are known as:
  • Native metal
  • Minerals
  • Substance
  • Element
Thermit reaction involves the reaction __________.
  • of $$Fe_2O_3$$ with $$Al$$ to form $$Fe$$ and $$Al_2O_3$$
  • of $$Fe$$ with $$Al_2O_3$$ to form $$Fe_2O_3$$ and $$Al$$
  • $$Cu_O$$ with $$Cu_2S$$ to form $$Cu$$ and $$SO_2$$
  • $$ZnS$$ with $$O_2$$ to form $$ZnO$$ and $$SO_2$$
Minerals that have a relatively high concentration of metal and can be extracted profitably from them are called:
  • Substance
  • Gold crust
  • Ores
  • Elements
When $$Cu_2S$$ is heated in air, the products obtained are _______ .
  • $$Cu_2O$$, $$SO_2$$ and $$Cu$$
  • $$Cu_2O$$ and $$CuO$$
  • $$Cu_2O$$, $$SO_3$$ and $$Cu$$
  • $$CuO$$, $$SO_2$$, and $$ Cu$$
When manganese dioxide is heated with aluminium powder, the products obtained are:
  • Mn, $$Al_2O_3$$ and heat
  • MnO and $$Al_2O_3$$
  • MnO, $$Al_2O_3$$ and heat
  • Mn, and $$Al_2O_3$$
Which of the following metals exist in free state?
  • Gold
  • Silver
  • Copper
  • All of the above
During electrolysis of molten sodium chloride:
  • sodium is obtained at the cathode and chlorine is obtained at the anode.
  • hydrogen is obtained at the cathode and oxygen is obtained at the anode.
  • sodium is obtained at the anode and chlorine is obtained at the cathode.
  • hydrogen is obtained at the anode and oxygen is obtained at the cathode.
 Cinnabar is the ore of:
  • $$Zn$$
  • $$Cd$$
  • $$Hg$$
  • $$Ag$$
Which of the following are found as sulphide ores?
  • $$Al,\ Hg,\ Pb,\ F$$
  • $$Fe,\ Zn,\ Pb$$
  • $$Hg,\ Pb,\ Na$$
  • $$F,\ Ca,\ Cu,\ Mg$$
Which of the following are found in Earth's crust mainly as oxides, sulphides and carbonates?
  • Metals above in the activity series
  • Metals in the middle of the activity series
  • Metals at the bottom of the activity series
  • All of these
How do the atoms combine in $$CaCl_2$$ or Calcium Chloride?
  • By forming metallic bond
  • By forming co-ordinate covalent bond
  • By forming ionic bond
  • By forming covalent bond
Which of the following is the most important use of alloying?
  • Make it more beautiful
  • Gives desirable characteristics to the element
  • Provides resistance to corrosion
  • Both $$B$$ and $$C$$
Stainless steel is made from:
  • Iron & copper
  • Iron, nickel and chromium
  • Iron & nickel
  • Iron & chromium
Which of the following are found as carbonate ore in nature?
  • $$Fe$$
  • $$Mg$$
  • $$Zn$$
  • $$Pb$$
Carbon, Phosphorus, Sulphur are non-metals. Which of the following are their characteristics.
  • Poor conductor of heat and electricity
  • Don't produce sound when beaten together
  • Brittle in nature
  • Can be gaseous, liquid and solid at room temperature
Metals found at the top of the reactivity series are never found in free-state because
  • they are less reactive
  • they are highly reactive
  • they are moderately reactive
  • they are not at all reactive

Which one of the following can't be drawn into wires?
  • $$Fe$$
  • $$Al$$
  • $$Cu$$
  • $$Cl$$
Which of the following is not a typical property of an ionic compound?
  • High melting point.
  • Conduct electricity in the molten and in the aqueous solution state.
  • They are insoluble in water.
  • They exist as oppositely charged ions even in the solid state.
The properties that are NOT possessed by non-metals are:
  • Brittleness
  • Non-conductivity
  • Malleability
  • Low density
The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is:
  • $$Cu_2O$$
  • $$Cu$$
  • $$CuO$$
  • $$CuS$$
Non-metals can't be used to make vessels but metals can. Why?
  • Non-metals are not sonorous.
  • Metals can be drawn into wires, i.e. they possess ductility.
  • Metals are good conductors of heat whereas non-metals are not.
  • Non-metals are not lustrous.
Which of the following cannot be beaten into thin sheets?
  • $$Al$$
  • $$K$$
  • $$Ar$$
  • $$Zn$$
Which of the following can't be beaten into sheets?
  • Zinc
  • Iron
  • Aluminium
  • Sulphur
Which of the following elements cannot be beaten into thin wires?
  • $$O$$
  • $$P$$
  • $$S$$
  • All of these
Pavan sorts some materials into two different groups and notes down their properties.
They are listed in the following table:

Group - I Group - II 
Cannot be beaten into thin sheets.Can be beaten into thin sheets.
When one end is in contact with a hot object, the other end does not become hot quickly.When one end is in contact with a hot object, the other end becomes hot quickly.
Cannot be turned into thin wires.Can be turned into thin wires.

Which of the following statements could be incorrect?
  • Materials of group II can be used to make bells
  • Materials of group I are generally not shiny and hard
  • Materials of group I are generally less dense than materials of group II
  • Materials of group II can be used to make materials that are conductors of electricity
In the table, the properties of some specimens are given.
SpecimenMelting PointShiningMalleabilityElectric conductivity
$$P$$HighmoreNoinsulator
$$Q$$HighlessNoconductor
$$R$$HighmoreYesconductor
$$S$$LowlessYeslow conductor

Which of the specimen is a metal?
  • $$R$$
  • $$Q$$
  • $$P$$
  • $$S$$
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