8th Grade > Chemistry
MATERIALS METALS AND NON-METALS MCQs
Total Questions : 39
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Answer: Option C. -> Calcium
:
C
Calcium hydroxide is a base. The metal in the given compound is calcium and the non metals present are hydrogen and oxygen.
:
C
Calcium hydroxide is a base. The metal in the given compound is calcium and the non metals present are hydrogen and oxygen.
Answer: Option B. -> False
:
B
Non metals are bad conductors of heat and electricity and hence they are called as insulators.
:
B
Non metals are bad conductors of heat and electricity and hence they are called as insulators.
Answer: Option A. -> True
:
A
An amphoteric oxide is an oxide that can act both as an acid and as a base. An example is aluminum oxide, Al2O3. It reacts with acids to form the corresponding aluminum salt, and with bases to form salts called aluminates.
:
A
An amphoteric oxide is an oxide that can act both as an acid and as a base. An example is aluminum oxide, Al2O3. It reacts with acids to form the corresponding aluminum salt, and with bases to form salts called aluminates.
Answer: Option A. -> True
:
A
Metals arecapable of producing a deep or ringing sound, Thus they are said to be sonorous.
:
A
Metals arecapable of producing a deep or ringing sound, Thus they are said to be sonorous.
Answer: Option B. -> basic
:
B
Most of themetals react with oxygen to form metal oxides.
For example: magnesium reacts with oxygen to form magnesium oxide. The reaction involved is:
2Mg(s)+O2(g)→2MgO(s)
The metal oxideform alkali solution when dissolved in water. This solution turns red litmus paper to blue. Hence, these metal oxides are basic in nature.
:
B
Most of themetals react with oxygen to form metal oxides.
For example: magnesium reacts with oxygen to form magnesium oxide. The reaction involved is:
2Mg(s)+O2(g)→2MgO(s)
The metal oxideform alkali solution when dissolved in water. This solution turns red litmus paper to blue. Hence, these metal oxides are basic in nature.
Answer: Option A. -> produces a ringing sound when beaten
:
A
Substances that produce a ringing sound when they are beaten are said to be sonorous. Metals are generally sonorous.
:
A
Substances that produce a ringing sound when they are beaten are said to be sonorous. Metals are generally sonorous.
Answer: Option D. -> No reaction
:
D
In the reaction between zinc sulphate and copper, no products will be formed as the reaction is not possible. Zinc is more reactive than copper and hence copper will not be able to displace zinc from its salt solution.
:
D
In the reaction between zinc sulphate and copper, no products will be formed as the reaction is not possible. Zinc is more reactive than copper and hence copper will not be able to displace zinc from its salt solution.
Answer: Option A. -> ductility
:
A
The property of metal by which it can be drawn into wires is called ductility. Example, copper and aluminium wires are widely used.
:
A
The property of metal by which it can be drawn into wires is called ductility. Example, copper and aluminium wires are widely used.
Answer: Option B. -> Chlorine
:
B
Sodium is a metal ion which combines with an ion of the non-metal chlorine(Cl) to form sodium chloride also know as the common salt.
:
B
Sodium is a metal ion which combines with an ion of the non-metal chlorine(Cl) to form sodium chloride also know as the common salt.
Answer: Option C. -> combination
:
C
When one metal replaces another metal from its salt solution, the type of reaction is termed as adisplacement reaction.
:
C
When one metal replaces another metal from its salt solution, the type of reaction is termed as adisplacement reaction.