a) What steps will you take to prevent a fire accident due to gas leakage?b) Why do you think the oil refinery was closed, situated near Taj Mahal?

a) To prevent a fire accident due to gas leakage, you can follow these steps:

1. Install a gas leak detector: This device can alert you if there's a gas leak in your home, giving you time to take action before a fire starts.

2. Regularly check your gas lines and connections: Look for signs of wear and tear, and replace any damaged parts immediately.

3. Keep flammable materials away from gas appliances: This includes things like curtains, paper, and cleaning products.

4. Have your gas appliances serviced regularly: A professional can spot potential problems and fix them before they lead to a gas leak.

5. Know how to turn off your gas supply: In the event of a leak, you'll need to shut off the gas to prevent it from igniting.

b) The oil refinery near the Taj Mahal might have been closed for several reasons. One possible reason is to protect the monument from pollution. Oil refineries can release harmful pollutants into the air, which can damage the white marble of the Taj Mahal. Another reason could be to reduce noise and light pollution in the area, which can disturb visitors and wildlife. Finally, the refinery might have been closed due to economic reasons, such as a lack of demand for its products or high operating costs.