SSC GK Questions 2026

A transformer raises or lowers an AC voltage using electromagnetic induction between two coils. A transformer has a primary and a secondary coil wound on a common soft-iron core.

The Approach Paper to the Twelfth Five Year Plan, released in 2011, aimed at average GDP growth of 9% a year for 2012–17.

Heat, by definition, is energy that flows because of a temperature difference. Thermodynamics recognises two ways in which a system can exchange energy with its surroundings: heat and work.

The Act provided dyarchy at the Centre and autonomy in the provinces, two separate reforms. The Government of India Act, 1935 abolished dyarchy in the provinces, which the 1919 Act had begun, and replaced it with provincial autonomy: provinces got responsible governments with ministers answerable to elected legislatures.

The plasma membrane is made of lipids and proteins and contains no DNA or RNA. The plasma membrane is the outer boundary of the cell.

Rotational kinetic energy is ½Iω², and the ring has the larger moment of inertia. For a thin ring about the axis through its centre and perpendicular to its plane, all the mass sits at distance R, so I = MR².

A light year is a unit of distance, not of time or brightness. One light year is the distance light travels through a vacuum in one Julian year.

Among the four rocky inner planets, Earth is the largest, with a diameter of about 12,742 km. The inner or terrestrial planets are Mercury, Venus, Earth and Mars, all made of rock and metal.

Using Q = mcΔT, the mass works out to 20,000 ÷ (400 × 10) = 5 kg. The heat needed to warm a body is Q = mcΔT, where m is the mass, c the specific heat capacity and ΔT the rise in temperature.

Harishena was the court poet and minister of the Gupta ruler Samudragupta and wrote this praise-poem in his honour. The Prayaga Prashasti, also called the Allahabad Pillar Inscription, is in elegant Sanskrit and is engraved on the same pillar that carries an edict of Ashoka.

A beam seen from the side is visible only because tiny particles send some of its light sideways. Light travelling in a straight line cannot enter our eyes unless something redirects it towards us.

The second industrial revolution, from about 1850 to 1914, was driven by steel, chemicals, electricity and oil. The first industrial revolution began in Britain around 1760 and rested on cotton textiles, coal, iron and the steam engine.

Power is the reciprocal of focal length in metres, and a concave lens has a negative focal length. The power of a lens is P = 1/f, with f in metres, and its unit is the dioptre (D).

The formula T₀ = 2π√(L/g) holds only for small swings; at large amplitudes the period grows.

On a level curve, friction alone supplies the centripetal force, so a cyclist slips when the needed force exceeds the maximum friction.

The New Development Bank was founded by the five BRICS countries, and Canada is not one of them. The founding members are Brazil, Russia, India, China and South Africa.

Copper is less reactive than lead, so it cannot push lead out of its compound. In a displacement reaction, a more reactive metal takes the place of a less reactive metal in its salt solution.

When the jobs on offer need skills, or are in places, that do not match the workers available, people stay jobless even though vacancies exist.

Graphite has free electrons that can move through it, so it conducts electricity; diamond and fullerene do not conduct well.

In a short circuit the live and neutral wires touch, the resistance of the path falls almost to zero, and the current shoots up.