Your Answer : (Not Answered)

Correct Answer : C

The student gets 40 marks and fails by 40 marks. This means the passing marks are 40 + 40 = 80.

Let the maximum marks be M.

We are given that the passing mark is 40% of the maximum marks.

So, 40% of M = 80.

\(0.40 \times M = 80\).

\(M = \frac{80}{0.40} = \frac{8000}{40} = 200\).

Your Answer : (Not Answered)

Correct Answer : A

Correct answer: 10

Surds multiply under a single root sign.

\[\sqrt{5} \times \sqrt{20} = \sqrt{100} = 10\]

Answering 100 stops at the product inside the root without taking the square root.

Your Answer : (Not Answered)

Correct Answer : B

Nothing about the sources of income of the State Governments is mentioned in the statement. So, I is not implicit. Since the Central Government has directed the State Governments to reduce expenditure, so II is implicit. Further, since the Central Government has refused any further grant to the State Governments for the next six months, it is quite clear that these Governments will abide by the directive. So, III is also implicit.

Your Answer : (Not Answered)

Correct Answer : A

Correct answer: LM

Each pair is two consecutive letters and the pairs move backwards three places at a time: X, U, R, O. The next pair begins at L and so is LM. Working backwards while also holding the internal structure is what makes this harder than its forward equivalent; taking the first letters alone and stepping down in threes is the reliable route. KL starts one place too far back. Reading the series backwards gives LM, OP, RS, UV, XY - a forward three-step - which is the easier direction in which to confirm it.

Your Answer : (Not Answered)

Correct Answer : D

The Indira Gandhi Canal is linked with the problem of Soil Salinity.

Heavy canal irrigation in the desert, with poor drainage, has raised the water table in parts of the command area. Water evaporating from the waterlogged surface leaves salts behind, so waterlogging and soil salinity are the canal's main environmental side effects.

The canal does not cause air or noise pollution. It has encouraged settlement in the desert rather than being an environmental issue of human migration.

Your Answer : (Not Answered)

Correct Answer : A

Thomas Malthus wrote the essay on population that helped Darwin.

His Essay on the Principle of Population (1798) argued that populations grow geometrically while food supply grows arithmetically, so most individuals must die before reproducing. Darwin saw that this struggle would favour whichever variants happened to be better suited.

Your Answer : (Not Answered)

Correct Answer : B

Methanol has the highest boiling point.

Methanol boils at 65 °C, dimethyl ether at \(-24\) °C and methane at \(-161\) °C. Methanol and dimethyl ether are isomers of the same formula \(\mathrm{CH_4O}\), but only methanol has an \(\mathrm{-OH}\) group and so can hydrogen bond to its neighbours; breaking those bonds needs much more energy.

Your Answer : (Not Answered)

Correct Answer : B

Cations are formed by the loss of electrons.

Removing negative charge leaves a net positive ion, as when \(\mathrm{Na} \rightarrow \mathrm{Na^+} + e^-\). The cation is always smaller than the parent atom, since the unchanged nuclear charge now acts on fewer electrons - and often a whole shell has been removed.

Your Answer : (Not Answered)

Correct Answer : B

Pressure is the scalar.

Although it arises from force, pressure at a point in a fluid acts equally in all directions and has no direction of its own, so it is specified by a single number. Force, velocity and acceleration are all vectors.

Your Answer : (Not Answered)

Correct Answer : B

It is Grand Central Terminal.

Grand Central in New York has 44 platforms and 67 tracks on two underground levels - more than any other station in the world. It opened in its present form in 1913.

Your Answer : (Not Answered)

Correct Answer : A

2008 was the International Year of the Potato.

The FAO chose it under the slogan 'Hidden treasure', to promote a crop that yields more food per hectare and per litre of water than any cereal, and grows where cereals will not.

Your Answer : (Not Answered)

Correct Answer : D

Walden (1854) was written by Henry David Thoreau.

It records the two years he spent in a cabin beside Walden Pond in Massachusetts. His essay Civil Disobedience influenced both Gandhi and Martin Luther King Jr.

Your Answer : (Not Answered)

Correct Answer : A

Jyoti Basu was the longest-serving Chief Minister of West Bengal.

He led the Left Front government from June 1977 to November 2000, twenty-three years in all - then a national record, since surpassed by Pawan Chamling of Sikkim.

Your Answer : (Not Answered)

Correct Answer : D

Recep Tayyip Erdogan won the first direct presidential election in Turkey.

He won in August 2014, the first time Turks elected their president by popular vote rather than through parliament. He had been Prime Minister since 2003.

Your Answer : (Not Answered)

Correct Answer : A

It is held in Andhra Pradesh.

The Flamingo Festival takes place each January at Pulicat lake and Nelapattu bird sanctuary in Nellore district, where greater and lesser flamingoes and pelicans winter in large numbers.

Your Answer : (Not Answered)

Correct Answer : A

The Cannes award is for films.

The Cannes Film Festival has been held on the French Riviera since 1946, and its highest honour is the Palme d'Or. Chetan Anand's Neecha Nagar shared the top prize at the first festival.

Your Answer : (Not Answered)

Correct Answer : C

Correct answer: Pratibha Patil

Pratibha Patil was the first woman President of India, serving from 2007 to 2012. She had earlier been a member of the Maharashtra legislature, a Rajya Sabha member and Governor of Rajasthan. The distractors each hold a different first, which is what makes them plausible. Indira Gandhi was the first woman Prime Minister, from 1966, an office quite distinct from the presidency. Sarojini Naidu was the first woman Governor of an Indian state, of the United Provinces in 1947, and the first Indian woman to preside over the Congress. Droupadi Murmu, elected in 2022, is the second woman President and the first from a tribal community. Other constitutional firsts for women worth knowing: Meira Kumar as the first woman Speaker of the Lok Sabha in 2009, and Fathima Beevi as the first woman judge of the Supreme Court in 1989.

Your Answer : (Not Answered)

Correct Answer : D

Correct answer: The first census after 2026

The 84th Amendment of 2001 extended the freeze on the allocation of Lok Sabha seats among the states, based on the 1971 census, until the first census taken after 2026. The freeze was first imposed by the 42nd Amendment in 1976, and its purpose is to remove a perverse incentive: since seats are allotted in proportion to population, states that succeeded in reducing their population growth would otherwise have lost representation to those that did not. Freezing the figures ensured that family planning success carried no political penalty. The consequence is a growing disparity in constituency size, with some seats now representing several times as many people as others. The 84th Amendment did permit readjustment of boundaries within each state on 2001 census figures, which was carried out by the Delimitation Commission of 2002, so constituencies were redrawn without the state totals changing. What happens after 2026 is politically fraught, since the southern states would lose seats relative to the north.

Your Answer : (Not Answered)

Correct Answer : D

They are phototrophs and chemotrophs.

Both make their own food, differing only in the energy source: phototrophs such as green plants and cyanobacteria use sunlight, while chemotrophs such as the nitrifying and sulphur bacteria use energy released by oxidising inorganic compounds - which is how life persists in deep-sea vents where no light reaches.

Your Answer : (Not Answered)

Correct Answer : B

The 2018 Wimbledon women's singles was won by Angelique Kerber.

Germany's Angelique Kerber beat Serena Williams 6-3, 6-3 in the final in July 2018 to win her first Wimbledon title.

Serena Williams was the runner-up. Venus Williams and Maria Sharapova were earlier Wimbledon champions but did not win in 2018.

It was Kerber's third Grand Slam singles title, after the Australian Open and the US Open in 2016.