The elements or compounds of the metals which occur in nature in the earth crust are called ……………… 

Monjur Alahi

The elements or compounds of the metals which occur in nature in the earth crust are called ……………… 

A) ores 

B) minerals 

C) gangue 

D) slag


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Salim Ahmed Kawsar

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Correct option is  B) minerals

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In the periodic table, vertical columns of elements are called _______ and horizontal rows of elements are called _______.

Correct Answer - groups, periods

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The percentage of Earth Crust in the volume of the earth

The percentage of Earth Crust in the volume of the earth 1%

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The solid crust or the hard top part of the Earth is called

(C) Lithosphere

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(C) 1st order

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A) The Mid ocean ridge

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Correct option is: (D) \(\frac{3g}{4\pi RG}\)

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The most abundant metal in the earth’s crust is …………….. 

B) aluminium

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B) Homologous series

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Write the uses of i. alkali metals ii. alkaline earth metals

i. Uses of alkali metals: Lithium metal is used in long-life batteries used in digital watches, calculators and computers. Liquid sodium is used for heat transfer in nuclear power stations. Potassium chloride is...

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A sudden movement (or) trembling of the earth’s crust is called an ........ 

(b) Earthquake

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