Question : Which of the following elements is used in the manufacture of fertilisers?
Option 1: Fluorine
Option 2: Potassium
Option 3: Lead
Option 4: Aluminium
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Correct Answer: Potassium
Solution : The correct option is Potassium.
The three most prevalent components of fertilizers are nitrogen, phosphorus, and potassium (NPK). Potassium (K) fertilizers can be produced using potash. All commercial potash deposits originate from marine deposits and are frequently found buried deep within the earth.
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Question : Which of the following metals reacts violently with cold water?
Option 1: Magnesium
Option 2: Aluminium
Option 3: Zinc
Option 4: Potassium
Question : Which of the following is used to increase the anti-knocking property of Petrol?
Option 1: Tetra Methyl Lead
Option 2: Tetra Ethyl Lead
Option 3: Tri Methyl Lead
Option 4: Tri Ethyl Lead
Question : Which of the following is arranged in order of decreasing conductivity?
Option 1: Copper, aluminium, steel, silver
Option 2: Aluminium, silver, copper, steel
Option 3: Copper, silver, aluminium, steel
Option 4: Silver, copper, aluminium, steel
Question : Which of the following statements is Incorrect?
Option 1: Metals are used in making cookware.
Option 2: Metals are used in the manufacture of automobiles.
Option 3: Living beings inhale metals during respiration.
Option 4: Metals are used in manufacturing jewellery.
Question : Which of the following is a dark reddish-coloured stone used as raw material in aluminium smelting?
Option 1: Mica
Option 2: Gypsum
Option 3: Bauxite
Option 4: Conglomerate
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