SSC GD Constable GK Questions 2026

Written during the Great Depression and published in 1936, this book argued that an economy can settle at a level of high unemployment on its own, and that the remedy is to raise effective demand through government spending; it created macroeconomics as we know it and the whole school called…

Karl Marx published the first volume of Das Kapital in 1867 as his full critique of the capitalist mode of production, built around surplus value and the exploitation of labour; the later volumes were edited and brought out by Friedrich Engels after Marx died.

Dadabhai Naoroji, honoured as the Grand Old Man of India and the first Indian to be elected to the British House of Commons, brought together his writings in this book and showed with figures that a large part of India's wealth was being carried away to Britain every year through…

Kautilya, also known as Chanakya and as Vishnugupta, was the minister and guide of Chandragupta Maurya, and his Arthashastra is a manual of statecraft that deals with the duties of a king, the organisation of the treasury, taxation, trade, spying, law and war; it is the earliest Indian work usually…

The Scottish thinker Adam Smith published this book in 1776, and it is treated as the starting point of economics as a separate subject, which is why he is called the father of economics; its most quoted idea is the invisible hand, by which the self-interest of individuals is said…

The eastern coastal plain is divided into three named stretches, and the southern one, running along Tamil Nadu, is the Coromandel coast; it receives much of its rain from the retreating north-east monsoon in October and November, unlike the rest of India.

Lying mainly in Jharkhand with parts in Odisha, Chhattisgarh and West Bengal, and drained by the Damodar, it holds India's richest concentration of coal along with iron ore, mica, bauxite and copper; the cluster of collieries, steel plants and power stations along the Damodar has earned it the nickname Ruhr…

The southern section of the western coastal plain, lying in Kerala, is called the Malabar coast, and it is distinguished by its kayals, the shallow lagoons and backwaters such as Vembanad and Ashtamudi that are linked into an inland waterway.

Towards the end of the Cretaceous period, fissure eruptions poured out sheet after sheet of lava over western and central India; the hardened lava is basalt and the stepped landscape it makes is called the Deccan Trap.

Chilika lies on the Utkal coast of Odisha, separated from the Bay of Bengal by a long sandbar, and it is the largest brackish-water lagoon in India, famous for its migratory birds and for its population of Irrawaddy dolphins.

The Narmada flows west between the Vindhyan range and the Satpuras along a trough formed by faulting, that is, a rift valley, and it empties into the Gulf of Khambhat through a broad estuary rather than a delta.

The Palakkad Gap, also spelt Palghat, is the widest break in the Western Ghats, lying between the Nilgiri hills to the north and the Anaimalai hills to the south.

Anaimudi rises to about 2,695 metres in the Anaimalai hills of Kerala, south of the Palakkad Gap, and it is the highest summit anywhere in the Peninsular Plateau and indeed in India south of the Himalayas.

Doddabetta, about 2,637 metres high, is the highest point of the Nilgiri hills, the block where the Western Ghats and the Eastern Ghats meet, and it overlooks the hill station of Udhagamandalam or Ooty in Tamil Nadu.

Gujarat has the longest coastline of any Indian state. Its shore runs from the Rann of Kachchh round the Gulf of Kachchh, along the whole Saurashtra or Kathiawar peninsula and down the Gulf of Khambhat, and this deeply indented outline gives it far more shore than any other state.

In methane the carbon atom is joined to four hydrogen atoms by four single bonds and has no lone pair, so the four bonding pairs push one another as far apart as possible and point to the corners of a regular tetrahedron, with bond angles of about 109.5 degrees.

Rusting is a slow oxidation in which iron combines with oxygen in the presence of moisture to form hydrated iron oxide, the reddish-brown flaky substance we call rust.

Zinc is above hydrogen in the reactivity series, so it displaces hydrogen from a dilute acid: zinc and dilute hydrochloric acid give zinc chloride and hydrogen gas.

A nitrogen atom has five valence electrons and needs three more to complete its octet, so two nitrogen atoms share three pairs of electrons and form a triple bond, written N to N with three lines.

In an ionic or electrovalent bond a metal atom loses one or more electrons to a non-metal atom; the metal becomes a positive ion and the non-metal a negative ion, and the electrostatic attraction between the two holds the compound together, as in sodium chloride and magnesium oxide.