Materials Metals and Non Metals Test

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Materials Metals and Non Metals Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

Read the following statements carefully and identify X, Y and Z respectively.

(i) X is stored under kerosene.

(ii) Y catches fire on exposure and stored in water.

(iii) Z reacts with steam.

A
Na, Mg, Cu

B
Na, P, Fe

C
Cu, Zn, K

D
Zn, Cu, Na

Solution

Sodium reacts vigorously with oxygen and water, giving off a lot of heat so, it is stored in kerosene. Phosphorus catches fire on exposure to air and hence, stored in water. Iron reacts with steam.
Question 2
1 / -0

Read the given statements and select the correct option.

Statement 1: Silver objects become green and lose their shine with the passage of time.

Statement 2: Silver reacts with carbon dioxide and moisture present in the atmosphere.

A
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

B
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

C
Statement 1 is true and statement 2 is false.

D
Both statements 1 and 2 are false.

Solution

Silver objects become blackened and lose their shine with the passage of time. This happens due to reaction of silver with hydrogen sulphide gas present in the atmosphere.
Question 3
1 / -0

Mr. Ramakant, a science teacher organised a quiz in the class. He stated few applications of non-metals and asked students to guess the names of the non-metals. Mark the correct option.

A
Non-metals used in fertilisers-K, Cl

B
Non-metal used in water purification process-Br

C
Non-metal used in crackers-N

D
Non-metal used as an antiseptic-I

Solution

Non-metals used in fertilisers-N, P; in water purification process-CI; in crackers-S, P.
Question 4
1 / -0

Read the given passage and fill in the blanks by choosing an appropriate option.

Non-metals find wide applications in industries. For example ___i___ is used in electrodes, ___ii___ is used in welding metals, ___iii___ is used to make antiseptic creams while ___iv___ is used as a preservative due to its inert nature.

A

(i) (ii) (iii) (iv)

Carbon Hydrogen Chlorine Phosphorus

B

(i) (ii) (iii) (iv)

Hydrogen Oxygen Chlorine Nitrogen

C

(i) (ii) (iii) (iv)

Graphite Hydrogen Sulphur Nitrogen

D

(i) (ii) (iii) (iv)

Phosphorus Sulphur Oxygen Carbon
Question 5
1 / -0

Fill in the blanks with the most appropriate option.

'W' is very reactive metal, reacts vigorously with oxygen and water therefore, stored in ___(1)___.

'X' is non-metal, soft and dull and forms ___(2)___ oxides with oxygen.

'Y' is very reactive ___(3)___, catches fire if exposed to air, therefore, stored in water.

'Z' does not react with dilute hydrochloric acid even on heating but it reacts with sulphuric acid. When it is exposed to moist air for long, it acquires a dull ___(4)___ coating.

A
1 -Water, 2-basic, 3-metal, 4-reddish brown

B
1-Kerosene, 2-acidic, 3-metal, 4-reddish brown

C
1-Kerosene, 2-acidic, 3-non-metal, 4-green

D
1-Water, 2-basic, 3-non-metai, 4-green

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Re-Attempt Weekly Quiz Competition

(i)	(ii)	(iii)	(iv)
Carbon	Hydrogen	Chlorine	Phosphorus

(i)	(ii)	(iii)	(iv)
Hydrogen	Oxygen	Chlorine	Nitrogen

(i)	(ii)	(iii)	(iv)
Graphite	Hydrogen	Sulphur	Nitrogen

(i)	(ii)	(iii)	(iv)
Phosphorus	Sulphur	Oxygen	Carbon

Materials Metals and Non Metals Test - 9

Result

Materials Metals and Non Metals Test - 9

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Question 1

Na, Mg, Cu

Na, P, Fe

Cu, Zn, K

Zn, Cu, Na

Solution

Question 2

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

Statement 1 is true and statement 2 is false.

Both statements 1 and 2 are false.

Solution

Question 3

Non-metals used in fertilisers-K, Cl

Non-metal used in water purification process-Br

Non-metal used in crackers-N

Non-metal used as an antiseptic-I

Solution

Question 4

(i) (ii) (iii) (iv) Carbon Hydrogen Chlorine Phosphorus

(i) (ii) (iii) (iv) Hydrogen Oxygen Chlorine Nitrogen

(i) (ii) (iii) (iv) Graphite Hydrogen Sulphur Nitrogen

(i) (ii) (iii) (iv) Phosphorus Sulphur Oxygen Carbon

Question 5

1 -Water, 2-basic, 3-metal, 4-reddish brown

1-Kerosene, 2-acidic, 3-metal, 4-reddish brown

1-Kerosene, 2-acidic, 3-non-metal, 4-green

1-Water, 2-basic, 3-non-metai, 4-green

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(i) (ii) (iii) (iv)

Carbon Hydrogen Chlorine Phosphorus

(i) (ii) (iii) (iv)

Hydrogen Oxygen Chlorine Nitrogen

(i) (ii) (iii) (iv)

Graphite Hydrogen Sulphur Nitrogen

(i) (ii) (iii) (iv)

Phosphorus Sulphur Oxygen Carbon