The typical bottom freezer refrigerator in India should have a temperature that lies within a specific range. These types of refrigerator units can have temperatures that vary at times. This is normal with any refrigerator freezer unit.
The reason being that warm air rises from the bottom of the unit and behind it where the engine is. It rises to the top because warm air always rises to the top. This can affect the overall temperature of the unit. On an interesting note, your refrigerator freezer unit will be warmer in the front and colder in the back if its cooling piece is towards the back of the refrigerator.
You want to make sure that the internal temperature in your refrigerator is between 35-40 degrees Fahrenheit. Any colder and your food and drinks may freeze. Any warmer and your food and drinks won’t stay cold enough. They’ll grow bacteria and mold. They’ll also spoil quickly.