WorksheetsScience Metals and Non metal
Total questions: 77
Worksheet time: 2hrs 40mins
Name one metal and one non-metal that exists in liquid state at room
temperature.
(a)
Why metals can act as reducing agents while non-metal cannot?
(a)
What type of oxides are formed by metals
(a)
What type of oxides are formed by non metal
(a)
Name two non-metals which are lustrous.
(a)
Which metals have very low melting points?
(a)
Which metals are so soft that they can be cut with a knife.
(a)
Which metals are best conductors of heat?
(a)
Which metals are comparatively poor conductors of heat.
(a)
What is meant by malleability? Name two most malleable metals.
(a)
What is meant by ductility? Name two most ductile metals.
(a)
Name two metal oxides which are for water soluble
(a)
Name two metal oxides which are insoluble water
(a)
What is meant by anodising? Why is it done?
(a)
Write the electron-dot structure for Na and Cl atoms. How do these form a
chemical bond? Name the type of bond so formed. Why does a compound so
formed have high melting point?
(a)
Differentiate between metals and non-metals with respect to their chemical properties.
(a)
Differentiate between roasting and calcination.
(a)
Define the alloy
(a)
Define corrosion
(a)
What happens wheniron reacts with steam?
(a)
What happens when calcium and potassium are put in water
(a)
Show the formation of MgO
(a)
Show the formation of Na2O by the transfer of electrons.
(a)
Why Ionic compounds are generally hard solids but brittle in nature?
(a)
Why do ionic compounds are hard and solids?
(a)
Why do ionic compounds conduct electricity in their aqueous solution form or molten state?
(a)
How are the following metals reduced:
Metals which are highly reactive?
(a)
How are the following metals reduced metals which are in the middle of the reactivity series?
How you will obtain the following metals mercury from cinnabar?
How you will obtain the following metals mercury from cinnabar?
(a)
How you will obtain the following metals Copper from its ore copper glance?
(a)
What happens when manganesedioxide is heated with aluminium powder?
(a)
What happens when iron oxide is heated with aluminium powder?
(a)
How will you extract metal M from its enriched sulphide ore, if M is in the
middle of the reactivity series? Write various steps used in extracting this metal.
(a)
What is a reactivity series? Describe an activity to develop a reactivity
series.
(a)
Why metals can act as reducing agents while non-metal cannot?
(a)
What is a reactivity series? Describe an activity to develop a reactivity
series.
How electrolytic refining of copper is carried out? Explain in detail.
Define the following Amalgam
Define the following ore
Define the following:Mineral.
What is meant by corrosion? How corrosion is caused? How it can be
prevented? What is the effect of corrosion on copper?
What is meant by corrosion? How corrosion is caused? How it can be
prevented? What is the effect of corrosion on silver
Give four characteristics of ionic compounds.
Give reasons only:
Na, K and Li are stored under oil.
Give the reason only Pt, Au and Ag are used to make jewellery.
Hydrogen gas is not evolved when metals react with nitric acid. Give the reason only
Aluminium is a reactive metal, yet it is used to make utensils for cooking.
Aqueous copper sulphate solution should not be stored in an iron container.
Which of the following pairs will give displacement reactions?
NaCl solution and copper metal
MgCl2 solution and aluminium metal
FeSO4 solution and silver metal
AgNO3 solution and copper metal
Which of the following methods is suitable for preventing an iron frying pan
from rusting?
Applying grease
Applying paint
Applying a coating of zinc
All of these
An element reacts with oxygen to give a compound with a high melting point.
This compound is also soluble in water. The element is likely to be
Calcium
Carbon
Silicon
Iron
Food cans are coated with tin and not with zinc because
Zinc is costlier than tin
Zinc has a higher melting point than tin
Zinc is more reactive than tin
Zinc is less reactive than tin.
The electrical conductivity and melting point of an alloy is
Less than that of pure metal
More than that of pure metal
Equal to that of pure metal
Electrical conductivity is less and melting point is more than that of pure
metal.
Brass is an alloy of
Copper and zinc
Copper and tin
Copper and nickel
Copper and lead.
Solder is an alloy of lead and tin. It has a.
Low melting point and is used for welding electrical wires together
Low melting point and is used for welding heavy iron machinery.
High melting point and is used for welding electrical wires together
High melting point and is used for welding heavy iron machinery.
Galvanisation is a method of protecting
Steel and copper from rusting
Steel and silver from rusting
Steel and iron from rusting
Steel and tin from rusting.
The metals which are mixed with iron to make stainless steel are:
Copper and nickel
Nickel and chromium
Copper and chromium
Copper and silver
Bronze is an alloy of
Copper and zinc
Copper and lead
Copper and tin
Copper and nickel
Which of the following metals are obtained by electrolysis of their chlorides
in molten state?
(i) Na (ii) Ca
(iii) Fe (iv) Cu
(i) and (iv)
(iii) and (iv)
(i) and (iii)
(i) and (ii)
Which among the following statements is incorrect for magnesium metal?
It burns in oxygen with a dazzling white flame
It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
It reacts with hot water to form magnesium hydroxide and evolves hydrogen
gas.
It reacts with steam to form magnesium hydroxide and evolves hydrogen gas
An electrolytic cell consists of:
Deposited on cathode
Deposited on anode
Deposited on cathode as well as anode
Remains in the solution.
An element A is soft and can be cut with a knife. This is very reactive to air
and cannot be kept open in air. It reacts vigorously with water. Identify the
element from the following:
Solubility in water
Electrical conductivity in solid state
High melting and boiling points
Electrical conductivity in molten state.
Q.17. Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
(i) and (ii)
(ii) and (iii)
(ii) and (iv)
. (iii) and (iv)
Metals are refined by using different methods. Which of the following
metals are refined by electrolytic refining?
(i) Au (ii) Cu
(iii) Na (iv) K
(i) and (ii)
(i) and (iii)
(ii) and (iii)
(iii) and (iv)
Silver articles become black on prolonged exposure to air. This is due to
the formation of:
Ag3N
Ag2O
Ag2S
Ag2S and Ag3N
Galvanisation is a method of protecting iron from rusting by coating with a
thin layer of
Gallium
Aluminium
Zinc
Silver
Write true or false for the following statements:
Non-metals react with acids to give a salt and hydrogen gas.
True
Flase
Write true or false for the following statements:
At ordinary temperature, the surfaces of metals such as magnesium, aluminium,
zinc, lead, etc., are covered with a thin layer of oxide which protects the metal
from further oxidation.
True
False
Write true or false for the following statements:
Iron does not burn on heating but iron filings burn vigorously when sprinkled in
the flame of the burner.
True
False
Write true or false for the following statements:
Copper does not burn in air, but the hot metal is coated with a black coloured
layer of copper (II) oxide.
Truee
False
Write true or false for the following statements:
Silver and gold react with oxygen at high temperatures.
True
False
Write true or false for the following statements:
Hydrogen gas is evolved when a metal reacts with nitric acid.
True
False
Write true or false for the following statements:
Copper reacts vigorously with dilute HCl.
True
False
Write true or false for the following statements:
A solution of an ionic compound in water contains ions, which move to the
opposite electrodes when electricity is passed through the solution.
True
False
Write true or false for the following statements:
The elements or compounds, which occur naturally in the earth’s crust, are
known as minerals.
True
False
Write true or false for the following statements:
Those minerals which contain a very high percentage of a particular metal and
from which metal can be profitably extracted are called ores
True
False
