Defence GK Questions 2026

The Nubra Valley lies north of Leh, reached across the Khardung La, where the Nubra river joins the Shyok, itself a tributary of the Indus; the sand dunes at Hunder carry the double-humped Bactrian camels left behind by the old Central Asian caravan trade, and the Diskit monastery stands above…

The Kashmir Valley is a broad structural basin about 135 kilometres long lying between the Pir Panjal in the south-west and the Great Himalaya, with its Zanskar branch, in the north-east; the Jhelum meanders across its flat floor and leaves it through a gorge at Baramulla into the Wular lake.

The law states that for a mixture of gases that do not react, the total pressure is the sum of the partial pressures each gas would exert if it alone occupied the whole volume at the same temperature.

The root mean square speed follows from the kinetic gas equation and equals the square root of three RT divided by the molar mass, or equally the square root of three times the Boltzmann constant times the temperature divided by the mass of one molecule.

The kinetic theory of an ideal gas assumes exactly the opposite: that there are no forces of attraction or repulsion between molecules except during the brief moment of a collision.

Temperature is a measure of the average kinetic energy of the particles of a substance, in a solid as in a gas: in a solid the particles are held in fixed positions but vibrate about them, and heating makes the vibrations faster and wider, so the average kinetic energy rises…

The kinetic theory gives the average kinetic energy of a molecule as three halves of the product of the Boltzmann constant and the absolute temperature, and for one mole as three halves of RT.

Graham's law of diffusion states that at the same temperature and pressure the rate at which a gas diffuses is inversely proportional to the square root of its density, and therefore of its molar mass.

Substituting one mole, 273.15 kelvin and one atmosphere in the ideal gas equation gives a volume of 22.4 litres, the molar volume at standard temperature and pressure, and this is the figure used in mole calculations; with the modern standard pressure of one bar the value works out to about…

In SI units the universal gas constant is 8.314 joule per mole per kelvin, obtained by multiplying the Boltzmann constant by the Avogadro number.

Extending the straight line of Charles's law backwards shows that the volume of an ideal gas would become zero at minus 273.15 degrees Celsius, and this point is taken as the zero of the kelvin or absolute scale, at which molecular motion carries its least possible energy.

By Charles's law the volume of a fixed mass of gas at constant pressure is proportional to its absolute temperature, so heating the air inside the envelope makes it expand; some of it escapes from the open mouth, the mass of air left inside falls, its density becomes lower than…

Boyle's law, established in 1662, says that for a fixed mass of gas at constant temperature the product of pressure and volume stays constant, so doubling the pressure halves the volume.

A line through the origin at 45° to each axis joins all the points where the distance along the horizontal axis equals the distance along the vertical axis.

Ram Manohar Lohia, the socialist thinker and leader, put forward the idea of Sapta Kranti, or seven revolutions, as the programme of Indian socialism.

The ozone layer lies in the stratosphere, mostly between about 15 and 35 km above the earth, and it absorbs most of the sun's harmful ultraviolet radiation.

The Moderates, who led the Indian National Congress from 1885 to about 1905, did not seek to overthrow British rule; they believed in its basic fairness and wanted reforms within it.

Both statements about the Preamble are true. Statement 1 is correct because the Preamble resolves to secure to all citizens "EQUALITY of status and of opportunity", alongside justice (social, economic and political), liberty (of thought, expression, belief, faith and worship) and fraternity.

Avani Lekhara is an Indian para-shooter from Jaipur, Rajasthan, who competes in rifle events in the SH1 class. A car accident in 2012 left her with a spinal cord injury, and she took up shooting a few years later.

The Ganga flows from west to east across the northern plains, so the cities follow the order in which the river reaches them.