Metals and Non- Metals Test

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Metals and Non- Metals Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following properties of aluminium makes it useful to make parts of airplanes?

A
Hard and high de

B
Hard and low density

C
Ductile and high density

D
Malleable and soft

Solution

Aluminium, when mixed with other metals, gives hard alloy with low density, which makes it suitable for making parts of airplanes.
Question 2
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Directions For Questions

Read the given statements carefully and mark the correct answer.

...view full instructions

Statement I: Nowadays, instead of copper, aluminium is used to make electrical wires.
Statement II: Aluminium is cheaper than copper, that's why it is a good substitute of copper.

A
Both statements I and II are correct and statement II is the correct explanation of I.

B
Both statements I and II are correct and statement II is not the correct explanation of I.

C
Only statement I is correct.

D
Both statements I and II are incorrect.

Solution

Aluminium is used to make electrical wires because aluminium is cheaper than copper.
Question 3
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Heena's class teacher told her that silver and gold metals do not react with air and water. But, she noticed that her payal tarnished after some time. The reason of tarnishing of her silver payal is reaction with

A
noble metals

B
CO₂

C
N₂

D
H₂S

Solution

Silver metal is passive with air and water, but it reacts with H₂S in air to form silver sulphide, which is black in colour.
Question 4
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While performing an experiment, Rohit added HCl in a test tube containing metal 'X' and no effervescence was produced. This means that no hydrogen gas was produced. According to his class teacher, the metal 'X' is

A
iron

B
sodium

C
aluminium

D
copper

Solution

Less reactive metals like copper, gold and silver do not react with acids. They cannot displace hydrogen from acidic solution.
Question 5
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Riya often feels fatigue and weakness. Her doctor diagnosed her haemoglobin level as being low. This is due to the deficiency of a certain element. The name of the element is

A
iodine

B
iron

C
oxygen

D
copper

Solution

Iron is an important component of the red coloured pigment in blood called haemoglobin. Deficiency of iron causes anaemia, which causes lower level of blood haemoglobin, resulting in fatigue and weakness.
Question 6
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 7
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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 8
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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 9
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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 10
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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.

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Metals and Non- Metals Test - 2

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Metals and Non- Metals Test - 2

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Question 1

Hard and high de

Hard and low density

Ductile and high density

Malleable and soft

Solution

Question 2

Both statements I and II are correct and statement II is the correct explanation of I.

Both statements I and II are correct and statement II is not the correct explanation of I.

Only statement I is correct.

Both statements I and II are incorrect.

Solution

Question 3

noble metals

CO2

N2

H2S

Solution

Question 4

iron

sodium

aluminium

copper

Solution

Question 5

iodine

iron

oxygen

copper

Solution

Question 6

they are non-malleable metals

they are non-malleable non-metals

they are non-ductile metals

they are non-ductile non-metals

Solution

Question 7

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 8

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 9

Acidic

Basic

Amphoteric

Neutral

Solution

Question 10

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

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CO₂

N₂

H₂S