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Electrovalent Bonding Of Metals Test - Class 10 MCQ


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Electrovalent Bonding Of Metals Test - Question 1

Among the following, ionic compound is formed between:

Electrovalent Bonding Of Metals Test - Question 2

The electrovalent compounds are formed by the transfer of electrons from:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 2

An electrovalent bond is formed when a metal atom transfers one or more electrons to a non metal atom and these compounds are called ionic compounds.

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Electrovalent Bonding Of Metals Test - Question 3

Which of the following element has a tendency to gain electrons?

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 3
It has 7 electrons in their outer most shell so, to complete its octane it gain one electron.
Electrovalent Bonding Of Metals Test - Question 4

What are the ions present in NaCl?

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 4

The ions present in NaCl is one ion of Na and one ion of Cl. So, option ( c) is the correct one.

Electrovalent Bonding Of Metals Test - Question 5

The electronic configuration of Phosphorus (atomic number 15) will be:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 5

We know phosphorus has atomic no. 15. Therefore it's electronic configuration is :- 2,8,5 , which means 2 electrons  in k- shell, 8 electrons in L-shell and 5 electrons in M - shell.

Electrovalent Bonding Of Metals Test - Question 6

Due to the presence of strong electrostatic forces of attraction between ions, ionic compounds:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 6

Ionic compounds have high boiling and melting points as they're very strong and require a lot of energy to break. 

Electrovalent Bonding Of Metals Test - Question 7

The valency of magnesium and chlorine in magnesium chloride is:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 7

Magnesium has electronic configuration 2,8,2 . It loses 2 electrons to complete octet configuration in its valence shell. Chlorine has electronic configuration 2,8,7 . It gains 1 electron to complete octet configuration in its valence shell. 

Electrovalent Bonding Of Metals Test - Question 8

Ionic bond involves:

Electrovalent Bonding Of Metals Test - Question 9

The compounds formed when metals react with non-metals are:

Electrovalent Bonding Of Metals Test - Question 10

The correct electronic configuration for sodium ion is:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 10

Atomic number of sodium is 11 so its electronic configuration will be 2, 8, 1. But sodium ion is formed by the loss of an electron so its electronic configuration is 2, 8.

Electrovalent Bonding Of Metals Test - Question 11

Ionic compounds are soluble in water but insoluble in kerosene because:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 11

Water is a polar covalent compound. It decreases the electrostatic forces of attraction,resulting in free ions in aqueous solution. Hence ionic compounds disslove in water. Kerosene is a non polar organic solvent and dissolves non polar covalent compounds.

Electrovalent Bonding Of Metals Test - Question 12

Valency of aluminium is:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 12
Its atomic number is 13 hence its electronic configuration is 2,8,3. To complete the rule of octane it loses 3 electrons. Hence its valence is three.
Electrovalent Bonding Of Metals Test - Question 13

A solution of ionic compound conducts electricity due to the presence of:

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 13
A solution of ionic compound conducts electricity due to the presence of ions because they conatain charged particles . But ionic compound can only conduct electricity in its Aqueous Solution not in solid state. It conducts electricity when ions are free to move.
Electrovalent Bonding Of Metals Test - Question 14

Potassium chloride conducts electricity in _______ state.

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 14

Potassium Chloride is an excellent water soluble crystalline Potassium source for uses compatible with chlorides.. Chloride compounds can conduct electricity when fused or dissolved in water. Chloride materials can be decomposed by electrolysis to chlorine gas and the metal.

Electrovalent Bonding Of Metals Test - Question 15

Which of the following will not conduct electricity?

Detailed Solution for Electrovalent Bonding Of Metals Test - Question 15

Solid NaCl does not conduct electricity due to absence of free ions.

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