RRB ALP GK Questions 2026

Graphite is built of flat sheets of carbon atoms arranged in hexagons, and while the atoms inside a sheet are joined by strong covalent bonds, the sheets themselves are held to one another only by weak van der Waals forces.

In an entity relationship diagram each symbol has a fixed meaning, and an attribute that can hold more than one value for the same entity, such as a person's several phone numbers, is drawn as a double ellipse.

This describes geothermal energy. Molten rock pushed up from deep inside the Earth collects as hot spots at shallower depths, and groundwater trapped near them is heated until it becomes steam under high pressure.

The 56 K rating of a modem means it can transfer data at up to 56 kilobits per second, so the figure describes speed, not size.

In a packet switched network a packet meets four kinds of delay at every router on its path, and transmission, processing and queuing delays are three of them.

The ones complement of a binary number is found by simply inverting every bit, turning each 0 into 1 and each 1 into 0.

Bacteria are grouped by shape, and bacilli are the rod-shaped ones; the Latin word bacillus itself means a small rod or stick.

Thrust is the force acting perpendicular to a surface, and the thrust acting on unit area of that surface is called pressure, so pressure = thrust ÷ area.

Computer storage is counted in powers of two, so each step up the ladder multiplies by 1024, and one gigabyte equals 1024 megabytes.

Work done in moving a charge through a potential difference is W = Q × V, so W = 2 × 12 = 24 joule.

Use the third equation of motion, which links velocity and distance without needing time: v squared equals u squared plus 2as.

The first Vande Bharat Express was flagged off on 15 February 2019 on the New Delhi to Varanasi route. It was built at the Integral Coach Factory in Chennai and was known as Train 18 while under development.

Gamma rays sit at the far end of the electromagnetic spectrum, with the shortest wavelength and therefore the highest frequency and energy.

only. In a permanent magnet moving coil instrument the coil is pivoted in the field of a permanent magnet, so the deflecting torque is proportional to the current itself and not to its square.

When a floating body tilts a little, the centre of buoyancy shifts to the centre of the newly displaced water, and the vertical drawn through it cuts the original axis of the body at a point called the metacentre.

A galvanometer detects whether a current is flowing in a circuit and shows its direction, because its needle moves to one side or the other about a central zero.

A conservative force is one whose work depends only on the starting and the finishing point, not on the path taken, and whose work around any closed path is zero.

An iron rod is a solid, and the force of attraction between particles is strongest in the solid state. In a solid the particles sit close together in fixed positions and can only vibrate, so a solid keeps its shape, has a definite volume and can hardly be compressed.

The work done against gravity is mgh = 40 × 10 × 5 = 2000 joule, and power is work divided by time, so 2000 ÷ 4 = 500 watt.

Force has to be applied to break the chalk because its particles hold one another together, and that pull is the force of attraction between particles.