Metals and Non- Metals Test

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Metals and Non- Metals Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

Sodium, potassium and arsenic cannot be drawn into wires because

A
they are non-malleable metals

B
they are non-malleable non-metals

C
they are non-ductile metals

D
they are non-ductile non-metals

Solution

Sodium, potassium and arsenic are non-ductile metals.
Question 2
1 / -0

The base of utensils is coated with copper and handles are made of wood. Why?

A
It is because copper is a good conductor of electricity and wood is a bad conductor of electricity.

B
It is because copper is a good conductor of heat and wood is a bad conductor of heat.

C
It is because copper is a bad conductor of heat and wood is a good conductor of heat.

D
It is because copper is a bad conductor of electricity and wood is a good conductor of electricity.

Solution

Utensils need to be good conductors of heat so as to cook the food. But, the handle, which we are supposed to hold should not get heated up otherwise it will harm our skin. Copper is a metal and a good conductor of heat and is used to coat the base of utensils. On the other hand, wood is a bad conductor of heat and therefore, is used to make the handles.
Question 3
1 / -0

Copper and aluminium wires are used in making electrical appliances. Which of the following properties is responsible for this?

A
These metals are good conductors of electricity.

B
These non–metals are good conductors of electricity.

C
These metals are malleable and sonorous.

D
These non–metals are malleable and sonorous.

Solution

The wires used in making electrical appliances should have the tendency to allow electric current to pass through and should not melt down. Also, the wires should be thin. Both copper and aluminium are ductile metals and do not melt when electric current passes through them. Also, these metals are good conductors of electricity.
Question 4
1 / -0

What is the nature of the oxides formed by metals when they react with oxygen?

A
Acidic

B
Basic

C
Amphoteric

D
Neutral

Solution

The metallic oxides, when dissolved in water, form such compounds which can dissociate to give hydroxyl ions. Such compounds are said to be basic in nature.
Question 5
1 / -0

How does a litmus test help in finding whether a solution is a base or not?

A
Red litmus turns blue in a basic solution.

B
Blue litmus turns red in a basic solution.

C
Red litmus remains unaffected in a basic solution.

D
Both red and blue litmus remain unaffected in a basic solution.

Solution

Basic solutions turn red litmus paper blue, while the acidic solutions turn blue litmus paper red. Thus, a litmus test is used to identify whether a given solution is acidic, basic or neutral.
Question 6
1 / -0

Which of the following reactants will react with each other to undergo a displacement reaction?

A
Zinc sulphate and Copper turnings

B
Iron sulphate and Copper turnings

C
Zinc sulphate and Iron nail

D
Copper sulphate and Zinc granules

Solution

A displacement reaction takes place when one metal is more reactive than the other metal in the salt solution as per the activity series of metals. As copper is less reactive than both zinc and iron, the first two reactions cannot take place. Iron is less reactive than zinc, so the third reaction also cannot take place. Zinc is more reactive than copper; hence, it can displace copper from its salt solution and undergo a displacement reaction.
Question 7
1 / -0

A piece of aluminium foil is dropped in an aqueous solution of NaOH. The gas released during the reaction gives a pop sound, when a burning matchstick is brought near to it. Which of the following gases is released during the reaction?

A
Oxygen

B
Nitrogen

C
Hydrogen

D
Sulphur dioxide

Solution

Aluminium is a metal and NaOH is a base. When these two react, hydrogen is evolved. Moreover, hydrogen is the only gas which produces a pop sound on coming in contact with a burning splinter or a matchstick.
Question 8
1 / -0

Powdered sulphur is heated. It is introduced into a glass jar and covered with a lid. Now, water is added into the jar, lid is placed again and then is shaken well. When a blue litmus is introduced into this jar, it turns red. Which of the following is present inside the jar?

A
Nitric acid

B
Hydrochloric acid

C
Sulphurous acid

D
Copper sulphate

Solution

On heating, sulphur burns to produce sulphur dioxide. This reacts with water to form sulphurous acid.
Question 9
1 / -0

Why do gold ornaments generally not lose their lustre even after a long time of usage?

A
Gold is the most reactive metal.

B
Gold is one of the least reactive metals.

C
Gold becomes more lustrous when it comes in contact with air and water.

D
Gold is a very hard metal and air has no effect on it.

Solution

Gold is placed low in the reactivity series of metals as its reactivity with the atmospheric gases or water vapours is negligible. Thus, the shine or lustre on gold ornaments does not go off because it is one of the least reactive metals.
Question 10
1 / -0

Which of the following statements is not correct?

A
Copper can be formed into wires.

B
Aluminium can be beaten into thin sheets.

C
The solution of magnesium oxide turns red litmus blue.

D
Gold, in contact with lemon juice, turns blackish in colour.

Solution

Gold does not react with citric acid as it is the least reactive metal.
Question 11
1 / -0

Food cans are coated with tin and not with zinc because

A
zinc has a higher melting point than tin

B
zinc is costlier than tin

C
zinc is more reactive than tin

D
zinc is less tenacious than tin

Solution

Zinc is more reactive than tin, so it is more likely to dissolve in the liquid stored in the cans (zinc is more easily oxidised than tin because it is placed higher in the reactivity series).
Question 12
1 / -0

Metals are malleable because

A
they have high melting points

B
they are good conductors of heat and electricity

C
their atoms have strong attractive forces between them

D
they have a tendency to lose electrons

Solution

Metals are malleable because of strong attractive forces between their atoms.

Question 13

1 / -0

Match the following:

Column A	Column B
(a) Bromine	i. Brittle
(b) Mercury	ii. Non-metallic conductor
(c) Graphite	iii. Non-metallic liquid
(d) Zinc	iv. Metallic liquid

(a) - iii, (b) - iv, (c) - ii, (d) - i

(a) - iv, (b) - iii, (c) - ii, (d) - i

(a) - iii, (b) - ii, (c) - iv, (d) - i

(a) - iii, (b) - i, (c) - ii, (d) - iv

Solution

In this matching format, bromine is a non-metallic liquid, while mercury is a metallic liquid. Graphite is a non-metallic conductor, while zinc is known for its brittleness.

Question 14
1 / -0

Which of the following statements is not true about metals?

A
Metals react with sodium hydroxide.

B
More reactive metals can displace less reactive metals from their compounds.

C
Metals react with acids.

D
Metals do not react at all with water.

Solution

Some metals react with water to form metal hydroxide and hydrogen gas.
Question 15
1 / -0

________ is a non-metal that all living beings need for respiration.

A
Carbon

B
Oxygen

C
Nitrogen

D
Hydrogen

Solution

Oxygen is the non-metal which is needed by the living organism for respiration.

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Metals and Non- Metals Test - 6

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Metals and Non- Metals Test - 6

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Question 1

they are non-malleable metals

they are non-malleable non-metals

they are non-ductile metals

they are non-ductile non-metals

Solution

Question 2

It is because copper is a good conductor of electricity and wood is a bad conductor of electricity.

It is because copper is a good conductor of heat and wood is a bad conductor of heat.

It is because copper is a bad conductor of heat and wood is a good conductor of heat.

It is because copper is a bad conductor of electricity and wood is a good conductor of electricity.

Solution

Question 3

These metals are good conductors of electricity.

These non–metals are good conductors of electricity.

These metals are malleable and sonorous.

These non–metals are malleable and sonorous.

Solution

Question 4

Acidic

Basic

Amphoteric

Neutral

Solution

Question 5

Red litmus turns blue in a basic solution.

Blue litmus turns red in a basic solution.

Red litmus remains unaffected in a basic solution.

Both red and blue litmus remain unaffected in a basic solution.

Solution

Question 6

Zinc sulphate and Copper turnings

Iron sulphate and Copper turnings

Zinc sulphate and Iron nail

Copper sulphate and Zinc granules

Solution

Question 7

Oxygen

Nitrogen

Hydrogen

Sulphur dioxide

Solution

Question 8

Nitric acid

Hydrochloric acid

Sulphurous acid

Copper sulphate

Solution

Question 9

Gold is the most reactive metal.

Gold is one of the least reactive metals.

Gold becomes more lustrous when it comes in contact with air and water.

Gold is a very hard metal and air has no effect on it.

Solution

Question 10

Copper can be formed into wires.

Aluminium can be beaten into thin sheets.

The solution of magnesium oxide turns red litmus blue.

Gold, in contact with lemon juice, turns blackish in colour.

Solution

Question 11

zinc has a higher melting point than tin

zinc is costlier than tin

zinc is more reactive than tin

zinc is less tenacious than tin

Solution

Question 12

they have high melting points

they are good conductors of heat and electricity

their atoms have strong attractive forces between them

they have a tendency to lose electrons

Solution