Question

Choose the option which shows common feature in the relationship given in each question.
Petrol: Phosphorus: Cooking gas

• A. They are fuels
• B. They are highly inflamable
• C. They can be sold without permit
• D. India has to import them

Hint:

Petrol: Phosphorus: Cooking gas

Answer 1

The Correct Option is B

To determine the common feature among Petrol, Phosphorus, and Cooking Gas, let's analyze each of the given options:

1. They are fuels:
   • Petrol is indeed a type of fuel used in vehicles.
   • Cooking gas, typically LPG (Liquefied Petroleum Gas), is also a type of fuel used for cooking.
   • However, phosphorus is not a fuel. It is a chemical element commonly used in fertilizers, not for combustion. Therefore, this option doesn't apply to all three substances.
2. They are highly inflammable:
   • Petrol is highly flammable and can ignite easily.
   • Phosphorus is also highly flammable, especially white phosphorus, which can ignite in air.
   • Cooking gas (LPG) is highly flammable and is designed to burn easily in controlled conditions.
   • This option applies to all three substances, making it the correct answer.
3. They can be sold without permit:
   • Selling petrol and cooking gas generally requires a permit due to regulatory and safety concerns.
   • Phosphorus, especially in large quantities or pure form, also falls under regulatory restrictions for commercial transactions.
   • This option does not apply universally to all three substances.
4. India has to import them:
   • It is true that India imports a significant amount of petrol and LPG to meet domestic demands.
   • However, phosphorus can be sourced from domestic production and thus doesn't always need to be imported.
   • Therefore, this option does not apply to all three substances.

Based on the analysis above, the common feature that applies to Petrol, Phosphorus, and Cooking Gas is that they are highly inflammable.