CBSE Questions for Class 10 Chemistry Metals And Non Metals Quiz 3 - MCQExams.com

The reactivity of iron, magnesium, sodium and zinc towards water are in order as:
  • $$Fe > Mg > Na > Zn$$
  • $$Zn > Na > Mg > Fe$$
  • $$Na> Mg > Zn > Fe$$
  • $$Mg > Na > Fe > Zn$$
The correct order of increasing chemical reactivity is :
  • $$Zn < Fe < Mg < K$$
  • $$Fe < Mg < Zn < K$$
  • $$Fe< Mg < K < Zn$$
  • $$Fe < Zn < Mg < K$$
Which of the following elements produce basic oxides upon reacting with oxygen?
  • Chorium
  • Sulphur
  • Sodium
  • Magnesium
Copper sulphate solution can be safely kept in a vessel made of :
  • gold
  • lead
  • silver
  • zinc
Ionic compounds are more likely to be soluble in:
  • water
  • kerosene
  • oil
  • petrol
Metals are usually hard and difficult to cut.
On the other hand, non-metals are usually brittle. When hit with a hammer, they break into small pieces.

Identify the element that is relatively more brittle from the options below:
  • Sulphur
  • Diamond
  • Iron
  • Magnesium
Which of the following statement(s) is/are true?
  • All ores are minerals.
  • Only non-metals are abundant on earth
  • Copper and silver are found in the combined state as their sulphide or oxide ores
  • Oxygen is a very reactive element
To protect iron from corrosion and rust, it is coated by :
  • Tin
  • Copper
  • Zinc
  • Mercury
In the refining of copper, pure copper is deposited at:
  • Anode
  • Cathode
  • A and B both
  • None of these
Which one of the following pairs of substances on reaction will not evolve $$H_{2}$$ gas?
  • Iron and $$H_{2}SO_{4}$$ (aq.)
  • Iron and steam
  • Copper and $$HCl$$ (aq.)
  • Sodium and ethanol
Which of the following statement(s) is/are correct regarding ionic compounds?
  • They are good conductors of electricity at room temperature
  • They are always more soluble in water than petrol
  • They consists of ions
  • They generally have high melting and boiling points
On strong heating, zinc metal burns in presence of air to form :
  • zinc chloride
  • zinc sulphide
  • zinc oxide
  • zinc hydroxide
Compare metals and non-metals with particular emphasis on solubility:
  • Both dissolve in solvent
  • None of them dissolve in solvent
  • Metal dissolve while non-metal do not dissolve in solvent
  • Non-metal dissolve while metal do not dissolve in solvent
On reaction with water, metal produces:
  • oxygen
  • nitric acid
  • base
  • metal oxide
  • none of the above
Corrosion can not be prevented by which of the following method?
  • Galvanisation
  • Create a barrier between the object being corroded and oxygen
  • Painting
  • Exposing it to sunlight
Why the grills of doors and windows are always painted before used?
  • To look beautiful
  • To avoid corroison
  • To protect from rain
  • To protect from sunlight
Identify the metal that occurs in both combined and native state in nature.
  • Potassium
  • Copper
  • Aluminium
  • Zinc
Name a metal that does not react with dil. $$HCl$$ or $$H_2SO_4$$.
  • Copper
  • Silver
  • Gold
  • All of the above
Compare the physical properties of metals and non-metals in general regarding malleability.
  • Both are malleable
  • None are malleable
  • Only metals are malleable
  • Only non-metals are malleable
Which of the following is true for electrolytic refining?
  • Pure metal is anode and impure metal is cathode
  • Pure metal is cathode and impure metal is anode
  • Both are anode
  • Both are cathode
What will you observe when copper ($$Cu$$) is kept in hydrochloric acid ($$HCl$$)?
  • Slow release of $$H_2$$ gas
  • Vigorous release of $$H_2$$ gas
  • Release of water in the form of vapour.
  • No reaction
No rusting takes place in absence of moisture. 
  • True
  • False
In the metallurgical process for the electro-refining of the metal, the anode is made of ______ metal.
  • impure
  • pure
  • refine
  • none of these
In the electrolytic refining of zinc,
  • graphite is at the anode.
  • the impure metal is at the cathode.
  • the metal ions get reduced at the anode.
  • acidified zinc sulphate is the electrolyte.
Metals generally react with water to form corresponding oxides or hydroxides and:
  • hydrogen
  • oxygen
  • carbon dioxide
  • carbon monoxide
Door locks are made of metals because metals:
  • have lustre
  • are opaque
  • are good conductors of heat
  • are hard and strong
1 kg of iron occupies less space compared to 1 kg of sponge. Why?
  • Iron has less density than sponge
  • Iron and sponge have equal densities
  • Iron has more density than sponge
  • None of the above
Corrosion of iron forms:
  • Mud
  • Dust
  • Rust
  • Water
 Which chemical reaction correctly represents the reaction between iron and dilute $$H_2SO_4$$?
  • $$Fe + H_2SO_4 \rightarrow FeSO_4 + H_2$$
  • $$2Fe + 3H_2SO_4 \rightarrow Fe_2(SO_4) + 3H_2$$
  • $$2Fe + 3H_2SO_4 \rightarrow Fe_2(SO_4)_3 + H_2$$
  • $$2Fe + H_2SO_4 \rightarrow Fe_2(SO_4)_3 + 3H_2$$
Name one metal that will not react with cold water but will react with steam.
  • Zinc
  • Silver
  • Calcium
  • Magnesium
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