Materials Metals and Non Metals Test

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Materials Metals and Non Metals Test - 22

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Weekly Quiz Competition

Question 1
1 / -0

Sodium metal can be stored under:

A
benzene

B
kerosene

C
alcohol

D
water

Solution

Sodium metal is highly reactive and never found in elemental form in nature. Because of this reason, they are stored under mineral oil or kerosene.
Question 2
1 / -0

Most of the metals combine with acids:

A
to produce carbon dioxide gas

B
to form a base

C
to liberate hydrogen gas by displacing hydrogen from the acids

D
to form acidic salt

Solution

Metals on the top of the reactivity series react easily with mineral acids to evolve hydrogen gas, e.g., sodium, magnesium, calcium, etc.
Question 3
1 / -0

Choose the reactions which are not feasible.
I. Iron + Zinc sulphate $$\rightarrow$$ Iron sulphate + Zinc
II. Magnesium + Silver nitrate $$\rightarrow$$ Magnesium nitrate + Silver
III. Copper + dil. sulphuric acid $$\rightarrow$$ Copper sulphate + $$H_2$$
IV. Zinc + Ferrous sulphate $$\rightarrow$$ Iron + Zinc sulphate

A
I, II and III

B
III and IV only

C
I and III only

D
All of these

Solution

Zinc is more reactive than iron, hence when added' to iron (II) sulphate, it can displace iron metal and the colour of the solution fades from green to colourless due to the formation of zinc sulphate.
reaction 1 opposite is done
Copper does not react with dilute sulphuric acid. So, no reaction takes place when dilute sulphuric acid is poured on a copper plate. But when concentrated sulphuric acid is poured over the copper plate, effervescence is observed.

Option C is correct answer.
Question 4
1 / -0

Which of the following metals generally occur in liquid a state at room temperature?

A
Mercury

B
Iron

C
Gallium

D
Both A and C

Solution

Mercury is a dense, silvery d-block element. It is the only metal that is liquid at standard conditions for temperature and pressure.
Gallium melts at room temperature and has one of the largest liquid ranges of any metal. The melting point of gallium is used as a temperature reference point.
Mercury and gallium exist in the liquid state at room temperature.
Hence, option D is correct.
Question 5
1 / -0

Sulphur dioxide $$\displaystyle \left ( SO_{2} \right )$$ is a/an:

A
acidic oxide

B
basic oxide

C
neutral oxide

D
none of the above

Solution

Sulphur is a non-metal and all the non-metals form acidic oxides.

$$SO_2$$ is the product of burning sulphur in the presence of oxygen.

When sulphur dioxide is dissolved in water sulphurous acid is formed, which turns blue litmus red.
Question 6
1 / -0

Quick silver is now known as:

A
lead

B
mercury

C
tin

D
brass

Solution

Quick silver is the chemical element mercury$$(Hg)$$. It was formerly known as hydrargyrum.
Question 7
1 / -0

The phosphorus is stored in:

A
Kerosene

B
Water bath

C
Metal container

D
Air
Question 8
1 / -0

A very reactive non-metal which does not occur in nature in the free state and is present in the bones, teeth and nervous tissue of animals is:

A
nitrogen

B
chlorine

C
phosphorus

D
sulphur

Solution

Phosphorous is present in our teeth, bones, and nervous tissue. Phosphorus is found in two allotropic forms, white phosphorus, and red phosphorus, due to high reactivity white phosphorus is never found in a free state on Earth.
Question 9
1 / -0

The metal generally mixed with gold while making ornaments is:

A
zinc

B
iron

C
silver

D
copper

Solution

Copper is metal generally mixed with gold while making an ornament to strengthen ornaments.

Hence, option $$D$$ is correct.
Question 10
1 / -0

The non-metal which is liquid at room temperature is:

A
chlorine

B
fluorine

C
bromine

D
iodine

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Re-Attempt Weekly Quiz Competition

Materials Metals and Non Metals Test - 22

Result

Materials Metals and Non Metals Test - 22

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SHARING IS CARING

Question 1

benzene

kerosene

alcohol

water

Solution

Question 2

to produce carbon dioxide gas

to form a base

to liberate hydrogen gas by displacing hydrogen from the acids

to form acidic salt

Solution

Question 3

I, II and III

III and IV only

I and III only

All of these

Solution

Question 4

Mercury

Iron

Gallium

Both A and C

Solution

Question 5

acidic oxide

basic oxide

neutral oxide

none of the above

Solution

Question 6

lead

mercury

tin

brass

Solution

Question 7

Kerosene

Water bath

Metal container

Air

Question 8

nitrogen

chlorine

phosphorus

sulphur

Solution

Question 9

zinc

iron

silver

copper

Solution

Question 10

chlorine

fluorine

bromine

iodine

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