Class 8 Science Chapter 4 MCQs Questions With Answers NCERT
We have compiled the NCERT MCQ Questions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 8 Science with Answers on a daily basis and score well in exams. Refer to the Materials: Metals and Non-Metals Class 8 MCQs Questions with Answers here along with a detailed explanation.
Materials: Metals and Non-Metals Class 8 MCQ
Choose the correct option.
Question 1.
Metals are
(a) shiny
(b) hard
(c) sonorous
(d) all of these
Answer
Answer: (d) all of these
Question 2.
Non-metals are
(a) non-ductile
(b) non-sonorous
(c) non-malleable
(d) all of these
Answer
Answer: (d) all of these
Question 3.
Which of the following is a non-metal?
(a) Aluminium
(b) Oxygen
(c) Iron
(d) Silver
Answer
Answer: (b) Oxygen
Question 4.
Metalloids possess the properties of
(a) metals
(b) non-metals
(c) both metals and non-metals
(d) none of these
Answer
Answer: (c) both metals and non-metals
Question 5.
The most reactive metal is
(a) copper
(b) zinc
(c) potassium
(d) gold
Answer
Answer: (c) potassium
Question 6.
Non-metals are
(a) generally gases
(b) generally liquids
(c) generally solids
(d) generally solid and gases
Answer
Answer: (d) generally solid and gases
Question 7.
Which of the following metal is stored in kerosene?
(a) Sodium
(b) Magnesium
(c) Phosphorus
(d) Zinc
Answer
Answer: (a) Sodium
Question 8.
Metal oxides are
(a) neutral
(b) basic
(c) acidic
(d) all of these
Answer
Answer: (b) basic
Question 9.
The non-metal which is liquid at room temperature is
(a) bromine
(b) chlorine
(c) iodine
(d) carbon
Answer
Answer: (a) bromine
Question 10.
Which substance is used for making pencil lead?
(a) Sulphur
(b) Silicon
(c) Graphite
(d) Aluminium
Answer
Answer: (c) Graphite
Question 11.
Which non-metal is used in making glass?
(a) Graphite
(b) Sulphur
(c) Silica
(d) None of these
Answer
Answer: (c) Silica
Question 12.
Which metal is used in wrapping materials?
(a) Aluminium
(b) Zinc
(c) Copper
(d) None of these
Answer
Answer: (a) Aluminium
Question 13.
The metal found in liquid state is
(a) mercury
(b) silver
(c) calcium
(d) sodium
Answer
Answer: (a) mercury
Question 14.
The most ductile metal is
(a) silver
(b) gold
(c) copper
(d) aluminium
Answer
Answer: (b) gold
Question 15.
Non-metals
(a) react with water
(b) do not react with water
(c) both (a) and (b)
(d) none of these
Answer
Answer: (b) do not react with water
Question 16.
Which of the following metals are soft enough to be even cut with a knife?
(a) Sodium
(b) Potassium
(c) Lithium
(d) All of these
Answer
Answer: (d) All of these
Question 17.
Which is the hardest substance?
(a) Gold
(b) Diamond
(c) Aluminium
(d) None of these
Answer
Answer: (b) Diamond
Question 18.
Metals react with acids to produce respective salts with evolution of
(a) hydrogen gas
(b) oxygen gas
(c) CO2 gas
(d) none of these
Answer
Answer: (a) hydrogen gas
Question 19.
In displacement reactions
(a) a more reactive metal displaces a less reactive metal.
(b) a less reactive metal displaces a more reactive metal.
(c) both (a) and (b)
(d) none of these
Answer
Answer: (a) a more reactive metal displaces a less reactive metal.
Question 20.
Which of the following non-metals are used in fertilisers?
(a) Nitrogen
(b) Phosphorus
(c) Both (a) and (b)
(d) None of these
Answer
Answer: (c) Both (a) and (b)
Question 21.
When non-metal reacts with water
(a) hydrogen gas is formed
(b) carbon dioxide gas is formed
(c) non-metals generally do not react with water.
(d) none of these.
Answer
Answer: (c) non-metals generally do not react with water.
Question 22.
The property of metals by which they can be beaten into thin sheets is called
(a) malleability
(b) ductility
(c) conduction
(d) expansion
Answer
Answer: (a) malleability
Question 23.
Which one of the following is a metal?
(a) C
(b) N
(c) Na
(d) O
Answer
Answer: (a) C
Question 24.
Which of the following does not show the property of malleability?
(a) Iron
(b) Graphite
(c) Aluminium
(d) Silver
Answer
Answer: (b) Graphite
Question 25.
Which one of the following is a good conductor of electricity?
(a) Iron
(b) Plastic
(c) Wood
(d) Glass
Answer
Answer: (a) Iron
Question 26.
The property of a metal by which it can be drawn into wires is called
(a) conductivity
(b) malleability
(c) ductility
(d) flexibility
Answer
Answer: (c) ductility
Question 27.
The metals that produce ringing sounds are said to be
(a) malleable
(b) sonorous
(c) lustrous
(d) hard
Answer
Answer: (b) sonorous
Question 28.
The solution of ash of magnesium ribbon in water is
(a) acidic
(b) basic
(c) neutral
(d) none of these
Answer
Answer: (b) basic
Question 29.
When sulphur dioxide is dissolved in water
(a) sulphur is formed
(b) sulphur trioxide is formed
(c) sulphuric acid is formed
(d) sulphurous acid is formed
Answer
Answer: (d) sulphurous acid is formed
Question 30.
What is the chemical formula of sulphurous acid?
(a) H2SO4
(b) SO2
(c) SO3
(d) H2SO3
Answer
Answer: (d) H2SO3
Question 31.
Sodium metal is stored in
(a) water
(b) alcohol
(c) kerosene
(d) ether
Answer
Answer: (c) kerosene
Question 32.
Which one of the following metals reacts vigorously with oxygen and water?
(a) Sodium
(b) Iron
(c) Calcium
(d) Magnesium
Answer
Answer: (a) Sodium
Question 33.
What is the chemical formula of copper sulphate?
(a) CuSO4
(b) CuCO3
(c) CuCl2
(d) CuO
Answer
Answer: (a) CuSO4
Question 34.
Which gas is produced when metals react with acids?
(a) Oxygen
(b) Nitrogen
(c) Hydrogen
(d) Carbon dioxide
Answer
Answer: (c) Hydrogen
Question 35.
Which one of the following does not react with acids?
(a) Cu
(b) Ni
(c) Cr
(d) O
Answer
Answer: (d) O
Question 36.
Which one of the following gas burns with a ‘pop’ sound?
(a) Oxygen
(b) Hydrogen
(c) Chlorine
(d) Hydrogen sulphide
Answer
Answer: (b) Hydrogen
Question 37.
Which one of the following is applied on wounds as an antiseptic?
(a) Sodium
(b) Iodine
(c) Brass
(d) All of these
Answer
Answer: (b) Iodine
Question 38.
Which one of the following is a very reactive non-metal?
(a) Sodium
(b) Potassium
(c) Carbon
(d) Phosphorous
Answer
Answer: (d) Phosphorous
Fill in the blanks with suitable word/s.
Question 1.
Metals are ______ of heat and ______
Answer
Answer: good conductors, electricity
Question 2.
Iodine is a ______ having lustre.
Answer
Answer: non-metal
Question 3.
______ and ______ are kept in kerosene to avoid explosion.
Answer
Answer: Sodium, potassium
Question 4.
Non-metal oxides are ______ in nature.
Answer
Answer: acidic
Question 5.
_______ is more reactive than copper.
Answer
Answer: Zinc
Question 6.
Sulphur forms ______ oxides.
Answer
Answer: acidic
Question 7.
Magnesium forms ______ oxides.
Answer
Answer: basic
Question 8.
_______ is less reactive than iron.
Answer
Answer: Copper
Question 9.
All metals are hard except _______ and ______
Answer
Answer: sodium, potassium
Question 10.
Metals have generally_______melting and boiling points.
Answer
Answer: high
Question 11.
_______ are used in medicines as antiseptic.
Answer
Answer: Non-metals
Question 12.
The only liquid metal is ______
Answer
Answer: mercury
Question 13.
______ is non-metal used in breathing by all living beings.
Answer
Answer: Oxygen
Question 14.
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is ______
Answer
Answer: aluminium
Question 15.
_______ reacts with cold water vigorously.
Answer
Answer: Sodium
Question 16.
………………….. metal is used in car batteries.
Answer
Answer: Lead
Question 17.
Zinc is used for galvanizing iron to protect it from …………………..
Answer
Answer: Rusting
Question 18.
Liquid ………………….. is used as rocket fuel.
Answer
Answer: Hydrogen
Question 19.
The oxides produced by the reaction of non-metals with oxygen are ………………….. in nature.
Answer
Answer: Acidic
Question 20.
Metals give ………………….. gas when they react with acids.
Answer
Answer: Hydrogen
Question 21.
………………….. is used in electroplating because of its high shiny appearance.
Answer
Answer: Chromium
True or False
Question 1.
Metals are non-sonorous.
Answer
Answer: False
Question 2.
Metals react with water.
Answer
Answer: True
Question 3.
Non-metals cannot be converted into wires.
Answer
Answer: True
Question 4.
The only liquid metal is bromine.
Answer
Answer: False
Question 5.
Sodium and potassium do not react vigorously with water and oxygen.
Answer
Answer: False
Question 6.
Basic solution turns red litmus into blue.
Answer
Answer: True
Question 7.
Graphite is a good conductor of electricity.
Answer
Answer: True
Question 8.
Generally, metallic oxides are basic and non-metallic oxides are acidic in nature.
Answer
Answer: True
Question 9.
Chlorine is not a non-metal.
Answer
Answer: False
Question 10.
Phosphorus is kept in water.
Answer
Answer: True
Question 11.
All metals exist in solid form at room temperature.
Answer
Answer: False
Question 12.
Rust formed on iron object is acidic in nature.
Answer
Answer: False
Question 13.
Aluminium is more reactive than copper.
Answer
Answer: True
Question 14.
Non-metals react with water to form a gas which burns with a ‘pop’ sound.
Answer
Answer: False
Question 15.
All the gases are non-metals.
Answer
Answer: True
Question 16.
Sodium is a very reactive metal.
Answer
Answer: True
Question 17.
Rust formed on iron objects is basic in nature.
Answer
Answer: True
Question 18.
All metals exist in solid form at room temperature.
Answer
Answer: False
Question 19.
Non-metals react with oxygen to from basic or neutral oxides.
Answer
Answer: False
Question 20.
Copper is less reactive than aluminium.
Answer
Answer: True
Question 21.
Sodium is a hard metal that cannot be cut with a knife.
Answer
Answer: False
Question 22.
Chlorine is a non-metal.
Answer
Answer: True
Question 23.
Non-metals can be drawn into wires.
Answer
Answer: False
Question 24.
Metals do not react with water.
Answer
Answer: False
Match the following
| Column I | Column II |
| 1. Malleable | (a) Can be transformed into wire |
| 2. Ductile | (b) For making crackers |
| 3. Oxygen | (c) Give sheets on hammering |
| 4. Copper | (d) For disinfecting water |
| 5. Sulphur | (e) All living beings inhale during breathing |
| 6. Diamond | (f) For making electric wires |
| 7. Sonority | (g) For making rails |
| 8. Iron | (h) Hardest non-metal |
| 9. Chlorine | (i) Ringing of bells |
| 10. Platinum | (j) Used in making ornaments |
Answer
Answer:
| Column I | Column II |
| 1. Malleable | (c) Give sheets on hammering |
| 2. Ductile | (a) Can be transformed into wire |
| 3. Oxygen | (e) All living beings inhale during breathing |
| 4. Copper | (f) For making electric wires |
| 5. Sulphur | (b) For making crackers |
| 6. Diamond | (h) Hardest non-metal |
| 7. Sonority | (i) Ringing of bells |
| 8. Iron | (g) For making rails |
| 9. Chlorine | (d) For disinfecting water |
| 10. Platinum | (j) Used in making ornaments |
| Column A | Column B |
| 1. Metallic oxide | a. Turns red litmus into blue |
| 2. Sodium | b. Non-metal |
| 3. A liquid non-metal | c. Basic in nature |
| 4. Chlorine | d. Kept in kerosene |
| 5. Basic solution | e. Bromine |
Answer
Answer:
| Column A | Column B |
| 1. Metallic oxide | c. Basic in nature |
| 2. Sodium | d. Kept in kerosene |
| 3. A liquid non-metal | e. Bromine |
| 4. Chlorine | b. Non-metal |
| 5. Basic solution | a. Turns red litmus into blue |
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