Coal, Oil and gas are different forms of fossil fuels found commonly in sedimentary rocks. They are used widely in the transport sector as fuels. Paraffin wax, on the other hand, is a colorless solid that is a byproduct derived from shale gas or coal and is a mixture of different hydrocarbon molecules. They are widely used in the manufacturing of crayons and candles and it is also used in the lubrication and electrical insulation.

The correct answer is option A, i.e., using metal bridges. Some trains travel alongside the river while some cross the river using metal bridges. There are separate bridges made of cement for other vehicles.

The correct answer is option B, i.e., people fishing. Ferry helps people reach their school, work place, etc. Not all people get to sit in a ferry as there are very limited seating arrangements. The ferry ride offers different scenes like people washing clothes, bathing, fishing, etc., on the banks of the waterbody.

The correct answer is option B, i.e., ticket collector. A person who checks and confirms tickets of people is called a ticket collector. The ticket collector comes to check the tickets just after the train starts. He/she usually wears a uniform.

As per the information provided in the question, we can make the following direction diagram

We see that the house is in North-West direction with respect to the hospital.

Full moon and blue moon are the phases of moon. The phase when the moon looks full and complete is full moon whereas the phase of the moon when the moon cannot be seen in the sky, is called new moon.

A full moon phase occurs when is moon on the opposite side of the earth from the sun and new moon phase occurs when the moon is directly between earth and the sun. Holi, Rakshbandhan, Guru Nanak’s birthday, Budh Purnima are all celebrated on full moon day. Diwali is celebrated on new moon day and Shivratri, a day before new moon.

The correct option is ‘Chhattisgarh’. Chattisgarh is a heavily forested state of the country. The state has 8 traditional folk dances out of which Raut Nacha represents the traditional folk culture of the region.