CBSE Class 8 Science Materials Metals and Non Metals Worksheet Set A

Question. The property of metals by which they can be beaten in to thin sheets is called-
(a) malleability
(b) Ductility
(c) conduction
(d) Expansion

Answer : A

Question. The property of metal by which it can be drawn into wires is called
(a) Conductivity
(b) malleability
(c) Ductility
(d) Decorating

Answer : C

Question. The metals that produce ringing sounds, are said to be-
(a) malleable
(b) sonorous
(c) Lustrous
(d) hard

Answer : B

Question. Sodium metal is stored in-
(a) Water
(b) Alcohol
(c) Kerosene
(d) Ether

Answer : C

Question. Which one of the following metal reacts vigorously with oxygen and water?
(a) Sodium
(b) Potassium
(c) Calcium
(d) Magnesium

Answer : A

Question. Which metal is present in Calcium Hydroxide?
(a) C
(b) O
(c) Ca
(d) H

Answer : C

Question. Which metal is found in liquid state t room temperature?
(a) Fe
(b) Zn
(c) Hg
(d) Al

Answer : C

Question. The solution of ash of magnesium ribbon is-
(a) Acidic
(b) Basic
(c) Neutral
(d) All of these

Answer : B

Question. What is the product when sulphur reacts with oxygen?
(a) Sulphuric acid
(b) Sulphur trioxide
(c) Sulphurous acid
(d) Sulphur dioxide

Answer : D

Question. When sulphur dioxide is dissolve in water then-
(a) Sulphur is formed
(b) Sulphur trioxide is formed
(c) Sulphuric acid is formed
(d) Sulphurous acid is forme(d)

Answer : C

Question. What is the chemical formula of sulphurous acid-
(a) H2SO4
(b) SO2
(c) SO3
(d) H2SO3

Answer : D

Question. The sulphuric acid turns blue litmus paper into-
(a) Red
(b) Green
(c) Yellow
(d) Dark blue

Answer : A

Question. Which one of the following is a good conductor of electricity?
(a) Iron
(b) Plastic
(c) Wood
(d) Glass

Answer : A

Question. Oxides of non metals are _______ in nature
(a) Basic
(b) Acidic
(c) Neutral
(d) All of these

Answer : B

Question. Which non-metal catches fire if the exposed to air
(a) Sodium
(b) Phosphorous
(c) Calcium
(d) Uranium

Answer : B

Question. What is the chemical formula of copper sulphate?
(a) CuSO4
(b) CuCO3
(c) CuCl2
(d) CuO

Answer : B

Question. Which gas are produced when metal react with acids
(a) Oxygen
(b) Nitrogen
(c) Hydrogen
(d) Carbon dioxide

Answer : C

Question. Which one of the following does not react with acids?
(a) Cu
(b) Ni
(c) Cr
(d) O

Answer : D

Question. Which gas produced by piece of burning charcoal?
(a) CO2
(b) CO
(c) H2S
(d) O2

Answer : B

Question. Which non metal is essential for our life and inhale during breathing?
(a) H
(b) O
(c) C
(d) N

Answer : B

Question. Non metals used in-
(a) Aeroplanes
(b) making machinery
(c) Water boilers
(d) Fertilisers

Answer : D

Question. Which one of the following gas burns with the “pop” sound?
(a) Oxygen
(b) Hydrogen
(c) Chlorine
(d) Hydrogen sulphide

Answer : B

Question. Which of the following can be beaten in to thin sheets?
(a) Zinc
(b)Phosphorus
(c) Sulphur
(d) Oxygen

Answer : A

Question. Which one of the following is metal?
(a) C
(b) N
(c) Na
(d) O

Answer : C

Question. Which one of the following is non metal?
(a) Zn
(b) Al
(c) Fe
(d) N

Answer : D

              Questions

              Very Short Answer

Q1)       Define ductility?

Q2)       Why silver foil is used for decorating sweets?

Q3)       What is malleability?

Q4)       What is sonorous?

Q5)       Which metal is found in the liquid state at the room temperature?

             Short Answer

Q6)       Why sodium metal is stored in the kerosene?

Q7)       What do you mean by displacement reactions?

Q8)       How non-metals react with acids?

Q9)       What are the uses of aluminium and copper wires?

Q10)     How metals reacts with the oxygen?

              Long Answer

 Q11)     Difference between non-metals and metals?

Q12)     Explain the physical properties of metals?

Q13)     State the difference between ductility and malleability?

Q14)     What are the uses of metals and non-metals?

Q15)     Explain the physical properties of non-metals?