RRB JE GK Questions 2026

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.

Patachitra is the traditional cloth-scroll painting of Odisha, closely tied to the Jagannath temple at Puri. The word comes from pata, meaning cloth, and chitra, meaning picture.

Vijaya Lakshmi Pandit was elected President of the United Nations General Assembly for its eighth session in 1953, becoming the first Indian and the first woman in the world to hold that office.

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.

The Ryder Cup is a team golf tournament, played between teams representing the United States and Europe. It began in 1927 and is named after Samuel Ryder, the English seed merchant who donated the trophy.

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.

The plain remove-directory command is built to delete an empty folder only. In Windows it is rmdir, also written rd, and in Linux it is rmdir; both stop with a message such as "The directory is not empty" when anything is still inside.

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 proxy firewall, also called an application gateway, stands between the client and the server as a stand-in for both, opens each message and filters it at the application layer, so it can read a URL, a command or an attachment before passing the request on.

Calaverite is gold telluride, with the formula AuTe2. It is one of the very few minerals in which gold occurs chemically combined rather than as the free metal, because gold is a noble metal that usually resists reaction.

The ending 'al' marks an aldehyde, so propanal is the three-carbon aldehyde, CH3CH2CHO. An aldehyde carries the group -CHO at the end of the carbon chain, with the carbonyl carbon attached to a hydrogen.

An IPv4 address, which is what the question means by an IP address, is thirty-two bits long.

Java is an object-oriented programming language, so it is the right pick for Preet.

A packet filtering firewall works at the network layer, the third layer of the OSI model, where it reads the header of every incoming and outgoing packet and compares the source and destination IP address, the port number and the protocol against a list of rules, then allows the packet…

Columns are lettered A to Z, then AA to AZ, BA to BZ and so on, and the 16,384th column of the enlarged grid falls at XFD.

COUNT walks through the range and counts only the cells that hold a numeric value, which includes dates and times because Excel stores them as serial numbers.

Division by zero has no answer in arithmetic, so Excel refuses to invent one and writes #DIV/0! instead.