Question

In 1984, the Bhopal gas tragedy was caused due to the leakage of:
A. Methyl isocyanate
B. Sodium carbonate
C. Potassium isocyanate
D. Sodium dioxide

Answer 1

Hint: This gas is used as a pesticide. The Bhopal disaster, also known as the Bhopal gas tragedy, was a gas leak incident in India. It was considered to be the world's worst industrial disaster. It occurred on the night of 23 December 1984 at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh

Complete answer: Over 500,000 people were directly exposed to methyl isocyanate (MIC) gas and other chemicals. The toxic substance made its way in and around the shantytowns located near the plant.
1. About 2000 people died and 15,000 people were severely affected
2. Neuromuscular toxicity and other neuromuscular symptoms were the most common symptoms seen amongst the victims of the Bhopal gas tragedy survivors.
3. It has persisted since the gas leak and the symptoms are being passed on through the generations. These symptoms are mainly tingling, numbness, a sensation of pins and needles in the extremities, and muscle aches.
4. Methyl isocyanate is an organic compound with the molecular formula of $CH_3NCO$.
5. It is also called as isocyanatomethane, methyl carbylamine, and MIC.
It is an intermediate chemical in the production of carbamate pesticides.
It is also used in the production of rubbers and adhesives.

So the correct answer is A. Methyl isocyanate

Note: Sodium oxide is a chemical compound with the formula Na2O.
It is used in the manufacturing of ceramics and glasses.
This compound is the base anhydride of sodium hydroxide; when water is added to sodium oxide, NaOH has produced.
Potassium cyanate is an inorganic compound with the chemical formula KOCN.
It is a colorless solid. It is used in the preparation of many other compounds including useful herbicide.
Sodium carbonate is a chemical compound with the molecular formula $Na_2CO_3$. It's commonly known as washing soda and is used in cleaning products, glass production, as a food additive, and more.