Tag: metals and non metals

Questions Related to metals and non metals

State whether true or false :

All the elements having one electron in their outermost shell are metals.

chemistry metals and non metals introduction to non-metals occurence of metals occurrence of metals and non metals

  1. True

  2. False

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Correct Option: B
Explanation:

Hydrogen has one electron in its outermost shell with electronic configuration of $1s^1$ but it is a non-metal. therefore all elements having one electron in their outermost shell are not metals. Hydrogen is an exception.


 Therefore, option B is correct.

The most abundant metal in the earth's crust is :

chemistry metals and non metals introduction to non-metals occurence of metals occurrence of metals and non metals

  1. Oxygen

  2. Aluminium

  3. Calcium

  4. Gold

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Correct Option: B
Explanation:

Percent abundance of given elements in the earth's crust are :


Oxygen - 46.6%
Aluminium - 8.1%
calcium-3.63%
gold-0.0011%

But oxygen is a non-metal and aluminium, calcium and gold are metals. 

Therefore, Aluminium is the most abundant metal in the earth's crust.

Therefore, option B is correct.

Elements are classified into four major categories:

chemistry metals and non metals introduction to non-metals occurence of metals occurrence of metals and non metals

  1. Metals.

  2. non-metals.

  3. Metalloids.

  4. Noble Gases.

  5. All of the above.

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Correct Option: E
Explanation:

Elements are classified into four major categories: Metals, non-metals, Metalloids, and noble gases

The second most abundant metal present in the crust of the earth is :

chemistry metals and non metals introduction to non-metals occurence of metals occurrence of metals and non metals

  1. $Ca$

  2. $Al$

  3. $Cu$

  4. $Fe$

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Correct Option: D
Explanation:

Iron is the second most abundant metal in the earths crust. It is found in the molten form inside the crust of the earth. In the presence of air and moisture it forms its oxide but the alloy of steel is widely used as pipes,it is unreactive in nature.

________ are elements which can accept one or more electrons and form negative ions.

chemistry metals and non metals introduction to non-metals occurence of metals occurrence of metals and non metals

  1. Metals

  2. Non-metals

  3. Metalloids

  4. None of these

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Correct Option: B
Explanation:

Non-metals are elements which can accept one or more electrons and form negative ions.

Which of the following methods is not used to coat metallic elements to prevent corrosion?

chemistry metals and non metals effects of oxidation reactions in daily life corrosion of metals electroplating and its application

  1. Electroplating

  2. Metal cladding

  3. Metal spraying

  4. None of the above

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Correct Option: D
Explanation:

Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal. Metal cladding is the bonding together of dissimilar metals. It is different from fusion welding or glueing as a method to fasten the metals together. In metal spraying a wide range of metals is sprayed onto the surface of another metal. All of these methods are used to prevent corrosion.

Rusting of iron is :

chemistry metals and non metals effects of oxidation reactions in daily life corrosion of metals electroplating and its application

  1. an oxidation reaction

  2. a reduction reaction

  3. a redox reaction

  4. a displacement reaction

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Correct Option: C
Explanation:

Rusting of iron is a redox reaction because iron is oxidised from $0$ to $+3$ oxidation state and oxygen is reduced from $0$ to $-2.$

$4Fe+3O _2 \rightarrow 2Fe _2O _3$

Rust is a\an ________ salt.

chemistry metals and non metals effects of oxidation reactions in daily life corrosion of metals electroplating and its application

  1. hydrated

  2. anhydrous

  3. acidic

  4. basic

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Correct Option: A,D
Explanation:

Rust general formula is $Fe _2O _3.nH _2O$. It is basic in nature.