MCQ Questions for Class 8 Science Chapter 4 : NCERT CBSE RBSE other Board MCQ Questions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals with Answers Pdf free download. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern.
MCQ Questions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals with Answers
1. Which of the following is a liquid at room temperature?
(a) Iron
(b) Bromine
(c) Iodine
(d) Phosphorus
Answer: (b) Bromine
2. The most reactive metal is
(a) copper
(b) silver
(c) potassium
(d) calcium
Answer: (c) potassium
3. The metal which is liquid at room temperature is
(a) sodium
(b) bromine
(c) calcium
(d) mercury
Answer: (d) mercury
4. Which one of the following metals is the most ductile?
(a) Aluminium
(b) Copper
(c) Silver
(d) Gold
Answer: (d) Gold
5. Which one of the following metals is the most reactive and stored in kerosene?
(a) Iron
(b) Gold
(c) Copper
(d) Potassium
Answer: (d) Potassium
6. Name the gas evolved when magnesium reacts with dilute hydrochloric acid
(a) Chlorine
(b) Oxygen
(c) hydrogen
(d) Nitrogen
Answer: (c) hydrogen
7. The property of metals by which they can be beaten into thin sheets is called ____
a) Ductility
b) Sheetability
c) Metallic
d) Malleability
Answer: (d)
8. The property of metal by which it can be drawn into wires is called ______
a) Ductility
b) Sheetability
c) Metallic
d) Malleability
Answer: (a)
9. The metal found in liquid state is
a) Iron
b) Aluminium
c) Mercury
d) Gold
Answer: (c)
10. When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The green material is a mixture of
a) Copper oxide and Copper Nitrate
b) Copper hydroxide & Copper Carbonate
c) Copper carbonate and Copper sulphate
d) Copper hydroxide and Copper Nitrate
Answer: (b)
11. When sulphur dioxide is dissolved in water __________ is formed.
a) Sulphuric acid
b) Sulphoxy acid
c) Sulphurous acid
d) Sulphur trioxide
Answer: (c)
12. Sodium metal is stored in
a) water
b) Kept under open air
c) alcohol
d) Kerosene
Answer: (d)
13. Phosphorus is stored in
a) water
b) Kept under open air
c) alcohol
d) Kerosene
Answer: (a)
14. Since metals produce ringing sounds, they are said to be ____.
a) Sound metal
b) Sonorous
c) Ring metal
d) malleable
Answer: (b)
15. A substance which cannot be broken down further by chemical reactions, by cooling, heating, or by electrolysis, is called ______
a) Metal
b) Non Metal
c) Element
d) Compound
Answer: (c)
16. They are not sonorous and are poor conductors of heat and electricity. These materials are
a) elements
b) Metals
c) Compound
d) Non metals
Answer: (d)
