Railway GK Questions 2026

Indian forests are classified administratively into reserved, protected and unclassed forests, and the first two together are described as the permanent forest estate, that is land maintained permanently for timber and other forest produce and for the protection of soil and water.

Tropical deciduous forest is called monsoon forest because it is the natural vegetation of the monsoon climate, growing where rainfall lies between 70 and 200 centimetres and where a marked dry season follows the rains.

Red sanders, or red sandalwood, is a tree of the dry deciduous forest and grows almost entirely in the Seshachalam and Palakonda hills of the Eastern Ghats in Andhra Pradesh, where it is prized for its dark red heartwood; it is not a thorn forest species.

Teflon is the trade name of polytetrafluoroethylene, a polymer whose surface is one of the most slippery among solids, with a coefficient of friction of about 0.04.

For the same pair of surfaces the order of friction is always static, then kinetic, then rolling. Static friction is the largest because the surfaces interlock while at rest and that grip has to be broken to start motion.

As the body falls its height shrinks, so the potential energy m g h falls, but exactly that much energy reappears as kinetic energy, half m v squared, because the body speeds up.

Fires are sorted into classes by what is burning, and a fire fed by flammable liquids such as petrol, diesel, kerosene, oil, paint or thinner is a class B fire.

The receptors that pick up taste are called gustatory receptors, and they sit inside the taste buds on the tongue.

In a class 3 lever the fulcrum is at one end, the effort is applied in the middle and the load sits at the far end.

Pitch is how shrill or how flat a sound seems to the ear, and it is decided by frequency, the number of vibrations per second measured in hertz.

The first equation of motion is written as v equals u plus a t, so it tells how the velocity of a body changes with time.

Water has a specific heat capacity of about 4186 joule per kilogram per kelvin, not 1200, so this pair is the wrong one.

A clinical thermometer is marked from 35 to 42 degrees Celsius, which on the Fahrenheit scale is 94 to 108 degrees.

A shortage of iodine makes the thyroid gland in the neck swell, a condition called goitre. The thyroid needs iodine to make the hormone thyroxine, and when iodine is short the gland grows larger to trap whatever little is available, so the neck looks visibly swollen.

The Chalukyas of Badami began as feudatories of the Kadambas of Banavasi and broke away as the Kadamba power declined.

Tanjore, or Thanjavur, was the capital of the Cholas and not of the Chalukyas, so this pair is wrongly matched.

Piklihal and Utnur are South Indian Neolithic settlements, famous for the ash mounds their cattle-keeping people left behind.

Dignaga and Nathamuni are matched rightly while Aryadeva is not, so exactly two pairs are correct.

Ajanta and Lepakshi both carry painting on their walls and ceilings, while Sanchi does not, so the first two alone fit.

Only the first statement holds, so the other combinations fall away. India follows single citizenship and a single domicile, which means a person is a citizen of India alone and not separately of a state, unlike the United States where a citizen also belongs to a state.