NTSE - SAT-2014

As per the theory of organic evolution, human beings have evolved from chimpanzees.

Adenosine triphosphate is known as the energy currency of a cell because energy is released when the phosphate bonds break.

Bio-magnification or bio-amplification is the increase in the concentration of a substance or toxic chemical with each trophic level of the food chain.

The vector of encephalitis is Culex mosquito and female Anopheles mosquito spreads malaria.

The correct route of the movement of sperms in the male reproductive tract is: Testes - Vas deferens - Urethra - Penis.

Digestion/egestion of foreign materials outside the cell is not a function of endoplasmic reticulum. Lysosomes perform this function.

Denitrification is the process of conversion of nitrates and nitrites into nitrogen. This is done mainly by bacteria pseudomonas and clostridium.

Lysosomes are the cell organelles that are responsible for the waste disposal system of the cell. They are also known as cellular scavanger.

The sequence of events which occur in a reflex action is: Receptor - Sensory neuron - CNS - Motor neuron - Effector muscle.

The movement of food in the digestive tract takes place by the contraction and relaxation of muscles. This is known as peristalsis or peristaltic movement. Peristalsis is a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract. The process of peristalsis begins in the esophagus when a bolus of food is swallowed.

This is an example of a dihybrid cross and follows the Law of Dominance as given by Mendel. Round yellow would be the nature of the seeds in the first generation (F₁ generation). The dominant trait can be expressed in homozygous and heterozygous forms.

Lichens are indicators of air pollution especially of the concentration of sulfur dioxide in the atmosphere,as they absorb nutrients directly from the atmosphere.

The acquired characters do not change the genetic make up of the cell. Hence are not inherited over a short span of time.

Ligaments and not tendons is the connective tissue that connects a bone to a bone.

Noise, vacuum and light flash do not constitute matter. Hence options (1), (2) and (4) are ruled out.
Silver foil, hot air and chalk all are made up of material particles that have some mass and occupy space.
Hence they are forms of matter.

Ice is a more effective cooling agent than water at 0^oC because it takes away from the surrounding medium the latent heat of fusion.
Therefore water will be cooler in the beaker (Y).

At 313 K 100 g of water can dissolve 62.0 g of solute X, hence all 50.0 g of X will dissolve. Therefore option (A) is correct.
On cooling the solution to 283 K the solubility decreases to 21.0 g per 100 g of water, therefore the excess 29.0 g (50.0 g - 21.0 g) will precipitate out.

For A; p = 13, n = 14, e = 13 and electronic configuration is: 2, 8, 3
Hence it will form the cation A⁺³
For B; p = 8, n = 8, e = 8 and electronic configuration is: 2, 6
Hence it will form the anion B^-2
Therefore the formula of the compound is A₂B₃
Formula unit mass = (27 x 2) + (16 x 3) = 102 u.
A (Z = 13) is Al and B (Z= 8) is O
The compound is: Al₂O₃

The formula of the compound NaX indicates that X is a non-metal with valency 1.
Hence the valence electrons may be 1 or 7.
Elements having less than 4 valence electrons are metals, and metals do not react among themselves.
Therefore the number of valence electrons in X is seven.

NaOH (strong) and NH4OH (weak) are bases).
HCl and H₂SO₄ are both strong acids.
H₂SO₄ is stronger and it is a dibasic acid.
Hence the order is:
NaOH < NH₄OH < HCI < H₂SO4

Sodium, potassium and calcium are highly electropositive elements and stronger reducing agents than carbon. Hence their oxides cannot be reduced by carbon.
Since the oxides of these metals are more stable than CO and CO₂, it implies that these metals have greater affinity for oxygen than carbon.

CnH2nO is the general molecular formula of aldehydes and ketones. It is also the general formula of alcohols and ethers having a carbon-carbon double bond.
Since the question clearly states the absence of a c = c, it cannot be an alcohol or an ether.
Therefore the compound may be an aldehyde or a ketone.

Car may be traveling in straight road with constant speed so acceleration may be zero or car may be traveling along the curved path and along the circular path It will experience centripetal acceleration. The possibility a is ruled out i.e. acceleration of the car is definitely zero,

Multiple reflection of light is the reflection of light back and forth several times between reflecting surfaces. If a reflected light ray is reflected again on being incident on another surface, it is termed multiple reflections. Stethoscope used by doctors is actually used to hear the integral organ sounds of the patient. This is basically used for the diagnostic purposes. It also works on the same principle of multiple laws of reflection. Thus, stethoscope used by doctors for finding quality, strength and frequency of human heartbeat is based on the principle of multiple reflection.

By definition of myopia, a myopic person can see nearby objects clearly but has a problem viewing the far off objects. This is because although the near point of the eye lens is 25 cm, the far point is less than infinity.

Magnetic lines of forces form closed loops. In side the magnet they travel from the South pole to the North pole where as out side the magnet they travel from North pole to the South pole. At particular point the direction of the magnetic field is given by the direction of the tangent at that point. One line can pass through the given point as two tangents can not be drawn at one point.

In case of the AC generator, slip rings are used where as in DC generator split ring commutator is used.

Source of the energy produced in the stars is nuclear fusion. In nuclear fusion, two lighter nuclei combine to form a heavy nuclei and large amount of the energy is released in the nuclear reaction.

Total number of partitions = ⁵C₁ + ⁵C₂ + ⁵C₃ + ⁵C₄ + 1 = 31

Let n² - 3n + 3 = k²
n² - k² = 3 (n - 1).
(n - k) (n + k) = 3 (n - 1).
Case 1: If, n - k = n - 1 or n + k = 3.
k = 1 then, n = 2.
Case 2: If n + k = n - 1 or n - k = 3.
k = -1 then, n = 2.
From both the cases we get, n = 2
Let, n - 1 = 0 implies n + k = 0, if n= 1, then k = -1.
Hence n = 1, 2.

Let numbers be 15x and 15y.
Then 15xy = 225 ⇒ xy = 15 either x = 15, y = 1 or x = 1, y = 15
Hence, (x, y) = (1, 15) or (15, 1) and (3, 5) or (5, 3)

x² + y² + z² = m² + n²

15² + 4² + 3² = 15² + 5²

We know that a centroid divides a triangle into three triangles of equal areas.

If the midpoints of a rectangle are joined then the quadrilateral formed after joining the points is a rhombus.

If circles touch internally then number of common tangent is 1.
So, Statement When C₁ and C₂ touch then N must be 3 is wrong.

Convocation of Estates General - May, 1789
Third Estate forms National Assembly - June, 1789
Storming of Bastille - July, 1789
After storming of Bastille, peasants revolted in countryside.

So, the correct order of events is a, d, b, c

The colonies of the Carribean – Martinique, Guadeloupe and San Domingo were source of sugar, tobacco, coffee and indigo.
The slave trade began in the seventeenth century.
French port cities like Bordeaux and Nantes owed their economic prosperity to the flourishing slave trade.
Slavery was finally abolished in the French colonies in 1848.

Liberals did not believe in universal adult suffrage. They believed that only men of property should have right to vote.
Radicals believed that a country's government should be based on the majority of the country's population.
After the French Revolution the conservatives accepted some change and believed that it should be brought slowly.
Socialists believed that property should be controlled by the government (society).

The Great Depression had a deep impact on Germany. People lost their jobs or were paid reduced wages. There was an environment of total despair. People lost confidence in the Weimar Republic. Nazi Party did not become popular until the 1930s. It was only after the Great Depression that Nazism became a mass movement.

In 1871, the Criminal Tribes Act was passed by the British government which declared certain communities of craftsmen, traders and pastoralists as criminals. This Act restricted their movement and forced them to live in notified village settlements. This Act was enforced because the British officials were suspicious of nomadic people and the government wanted to rule over settled population.

In the 1773, the British government established monopoly in opium trade in Bengal.
In the 1780s, the village headmen started paying peasants for producing opium in advance.
In the 1820s, opium production in British occupied territories declined rapidly.
In the 1870s, the British government exported 50,000 chests of opium from Bengal annually.

The game was seasonal and did not offer employment the year round. Most professionals worked as miners or in other forms of working class employment in winter, the off-season. So, the game was not meant just for aristocrats. Statement 'a' is thus incorrect.

The social superiority of the amateur was the reason the captain of a cricket team was traditionally a batsman: not because batsmen were naturally better captains but because they were generally Gentlemen. Captains of teams, whether club teams or national sides, were always amateurs. It was not till the 1930s that the English Test team was led by a professional, the Yorkshire batsman, Len Hutton.So, statements 'b' and 'c' are correct.

The social superiority of amateurs was built into the customs of cricket. Amateurs were called Gentlemen while professionals had to be content with being described as Players. They even entered the ground from different entrances. Amateurs tended to be batsmen, leaving the energetic, hardworking aspects of the game, like fast bowling, to the professionals.

By the 1830s, women in England began agitating for democratic rights. As the suffrage movement developed, many began campaigning for dress reform.

Dress reform emphasised that tight dresses and corsets caused deformities and illness among young girls.The argument was: simplify dress, shorten skirts, and abandon corsets. On both sides of the Atlantic, there was now a movement for rational dress reform.

Teachers and students did not blindly follow the curriculum. As the number of Vietnamese teachers increased in the lower classes, it became difficult to control what was actually taught. Teachers quietly modified the text and criticised what was stated.

In Awadh, under the Non-cooperation movement, peasants were led by Baba Ramchandra - here it was against talukdars and landlords. The peasant movement developed in forms that the Congress leadership was unhappy with. As the movement spread, in 1921, the houses of talukdars and landlords were attacked, bazaars were looted and grain hoarded.

In many places local leaders told the peasants that Mahatma Gandhi had declared that no taxes were to be paid and the land was to be distributed among the poor.

In Victorian England, the upper classes- the aristocrats and the bourgeoisie preferred things produced by hand. Handmade products came to symbolise refinement and class.

By 1750, London was a colossal city with a population of about 675,000. It was a powerful magnet for migrant population, even though it did not have large factories.

People who belonged to the depressed classes found it difficult to find housing. Lower classes were kept out of many chawls and often had to live in shelters made of corrugated sheets, leaves or bamboo poles.

After the revolt of 1857, the attitude of the British government towards freedom of the press changed. Enraged Englishmen demanded a clamp down on the native press. As vernacular newspapers became assertively nationalist, the colonial government began debating measures of stringent control.

In America, plantations worked by slaves captured in Africa were growing cotton and sugar for European markets.

In the thorn forests, trees are scattered and have long roots penetrating deep into the soil in order to get moisture. The stems are succulent to conserve water and leaves are thick and small to minimize evaporation.

India's rate of population growth has been steadily increasing from 1951 to 1981. Since 1981, the rate of growth started declining gradually. During this period the birth rates declined rapidly.

Due to the apparent northward movement of the sun, the global heat belt shifts northward. As such, from March to May, it is hot weather season in India. The influence of the shifting of the heat belt can be seen clearly from temperature recordings taken during March-May at different latitudes. In March, the highest temperature is about 38° Celsius, recorded on the Deccan plateau. In April, temperatures in Gujarat and Madhya Pradesh are around 42° Celsius. In May, temperature of 45° Celsius is common in the northwestern parts of the country. In peninsular India, temperatures remain lower due to the moderating influence of the oceans.

National Highway-7 is the longest and traverses 2,369 km between Varanasi and Kanyakumari via Jabalpur, Nagpur, Hyderabad, Bengaluru and Madurai.

The 24 degrees latitude passes through Mizoram and Jharkhand.

Assam is the correct answer. It has an annual rainfall of 200-400 cm. It has alluvial soil and rice is grown here.

Time difference between 1 degree longitude is 4 minutes. India's standard meridian is 82 degree 30 minutes E. Thus, 139-82 = 57 degrees. 57*4 = 3 hours 48 minutes. Thus, time in Tokyo is 1:49 pm as Tokyo is ahead of India in time.

Democracy expanded throughout the 20th century. Democracy did not spread evenly throughout the world. China is a communist country which is a member of IMF and one of the 5 permanent members of UN Security Council.

Parliament in India consists of two houses – Lok Sabha and Rajya Sabha and the President, although, the President is not a member of the either house.

Majoritarianism is a belief that the majority community should be able to rule the country in whichever way it wants, by disregarding the wishes and needs of the minority. This is against the features of democracy.

All except Rajya Sabha has reserved seats for women.

Use of high-yielding varieties and application of chemicals and pesticides is associated with Green Revolution. Organic Farming and Genetically Modified plants are not part of 1960s Green Revolution.

Health, education and income are the factors that determine the human development of a country.

When output remain 100 kms, it indicates that there has been no increase in output despite increased effort. Thus, it indicates disguised unemployment.

Self-help groups can borrow money as a group. Banks require collateral documents to give loans, this is the major reason why poor find it difficult to secure loans from banks.

The producer does not have to reveal the process of production under RTI.