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Published on: 24/08/2019
Metals and Non-Metals
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Questions + Answers key
Take MCQ Science Test
1.
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)
2.
Which one of the following properties is not generally exhibited by ionic compounds?
Solubility in water
Electrical conductivity in solid state
High melting and boiling points
Electrical conductivity in molten state
3.
Which of the following are not ionic compounds?
(i) KCl (ii) HCl (iii) CCl4 (iv) NaCl
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iii)
4.
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
H2SO4
HCl
HNO3
All of these
5.
What happens when calcium is treated with water?
(i) It does not react with water.
(ii) It reacts violently with water.
(iii) It reacts less violently with water.
(iv) Bubbles of hydrogen gas formed stick to the surface of calcium.
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(iii) and (iv)
6.
Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
FeO
Fe2O3
Fe3O4
Fe2O3 and Fe3O4
7.
Which one of the following metals do not react with cold as well as hot water?
Na
Ca
Mg
Fe
8.
The ability of metals to be drawn into thin wire is known as
Ductility
malleability
Sonorousity
conductivity
9.
An element reacts with oxygen to give a compound with a high melting point. This compound is also suitable in water. The element is likely to be
Calcium
Carbon
Silicon
Iron
10.
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
11.
An element X forms an oxide which turns red litmus blue. Identify whether X is a metal or non-metal
12.
Name the metal which has very low melting point and can melt with heat of your palm?
13.
State two physical properties of gold which are of extreme use to jewellers.
14.
Give an example of a metal which is the best conductor of heat.
15.
Name one metal and non-metal which exists in liquid state at room temperature?
16.
What are two types of reducing agents used to reduce metal oxide?
17.
Name two metals which do not react with oxygen.
18.
Name a non-metal which is in liquid state and a metal which is found in liquid state.
19.
State a reaction in which SO2 acts as an oxidising agent.
20.
What is the purpose of quenching steel?
1.
(c)
(ii) and (iv)
2.
(b)
Electrical conductivity in solid state
3.
(b)
(ii) and (iii)
4.
(c)
HNO3
5.
(d)
(iii) and (iv)
6.
(c)
Fe3O4
7.
(d)
Fe
8.
(a)
Ductility
9.
(a)
Calcium
10.
(d)
AgNO3 solution and copper metal
11.
Metal, because metal oxides are basic in nature.
12.
Gallium.
13.
Malleability, ductility, lustrous (Any two).
14.
Silver or Copper.
15.
Metal- mercury, Non-metal- bromine.
16.
Carbon and highly reactive metals such as sodium, calcium, aluminium are used as reducing agents to reduce metal into metal.
17.
Gold and silver.
18.
Non-metal - Bromine
Metal - Mercury
19.
Sulphur dioxide oxidises hydrogen sulphide (H2 S) to sulphur (S).
SO2(g)+2H2S(aq)→3S(s)+2H2O(I)
20.
Quenching makes steel very hard and brittle.
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