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