Question

Which of the following is very reactive and kept in kerosene?
1. Sodium
2. Iodine
3. Bromine
4. Calcium

Answer 1

Correct Answer - Option 1 : Sodium

The Correct Answer is Sodium.

 

• Sodium and Potassium are very reactive metals.
• They are kept in kerosene oil to prevent them from coming in contact with oxygen and moisture.
• On coming in contact with oxygen and moisture they react to form their hydroxides.
• This is an exothermic reaction and a lot of heat is generated so both the metals are kept in kerosene oil.

 

• Iodine is a non-metallic, dark-grey/purple-black, lustrous, solid element. 
• Bromine is a chemical element with the symbol Br and atomic number 35.
• It is a red-brown liquid at room temperature.
• Calcium is a silvery-white, soft metal that tarnishes rapidly in air and reacts with water.
• Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium.