RRB ALP GK Questions 2026

In 1798 Cavendish used a delicate torsion balance to measure the extremely small attraction between lead spheres in a laboratory and from it obtained a value of G, about 6.674 times ten to the power minus eleven newton metre squared per kilogram squared.

A mercury barometer balances the pressure of the atmosphere against a column of mercury, which stands about 76 centimetres high at sea level.

Weight equals mass times the acceleration due to gravity, and the acceleration due to gravity on the moon is about one-sixth of its value on the earth because the moon has a much smaller mass and a smaller radius.

It states that a body immersed wholly or partly in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced, so the apparent loss in weight of the body equals the weight of the displaced fluid.

Pascal's law states that pressure applied to an enclosed fluid is transmitted undiminished in every direction to all parts of the fluid and to the walls of the container.

Escape velocity is the minimum speed a body must be given so that it leaves the gravitational pull of the planet and never returns.

The earth is flattened at the poles, so the distance from the centre is least there, and since g varies inversely as the square of that distance, g is largest at the poles.

Pressure is thrust per unit area, so its unit is one newton per square metre, and this unit is named the pascal after Blaise Pascal.

Argon is a noble gas whose outer shell already holds eight electrons, so it has no room to take another one easily; adding an electron would mean starting a new shell, and energy has to be supplied rather than released.

At the top the object holds only potential energy; as it falls, that store is steadily converted into kinetic energy, and just as it touches the ground almost all of it is kinetic.

The same magnet moves at the same speed in both cases, so the rate of change of magnetic flux through the coil is equal and the induced potential difference has the same magnitude.

Fibrous roots are the mark of monocotyledonous plants such as wheat, maize, rice and grasses, not of dicots.

The work done in moving a charge across a potential difference is W = QV, so W = 5 × 16 = 80 joules.

The new service links Gujarat, Rajasthan, Uttar Pradesh and Bihar, and Maharashtra does not figure on the route at all.

Indian Railways approved the extension of trains 11901 and 11902 up to Mathura station, which lifts the run of the service from 217 km to 270 km and brings Jhansi, Agra and Mathura together on one train.

The new service approved by Indian Railways connects Bhuj in Gujarat with Barauni in Bihar and covers that distance while passing through Gujarat, Rajasthan, Uttar Pradesh and Bihar, which makes it one of the longer runs given to a train of the Amrit Bharat class.

It states that the upthrust on a body dipped fully or partly in a fluid equals the weight of the fluid the body pushes aside.

Bhopal stands at about 23.3° North, so of the four cities it lies nearest to the 24° parallel.

The erg is the unit of work in the CGS system, being one dyne of force acting through one centimetre, and since one newton is one lakh dyne and one metre is a hundred centimetre, one joule works out to ten million erg, that is 10 raised to the power…

A stone at rest at a height has no motion and therefore no kinetic energy, but it possesses gravitational potential energy equal to its mass into the acceleration due to gravity into the height of the tower.