Staff Selection Commission Combined Graduate Level Exam
Question : If a + b = 3, the value of a3 + b3 + 9ab is:
Option 1: 27
Option 2: 9
Option 3: 16
Option 4: 81
Correct Answer: 27
Solution : Given: a + b = 3 Now, a3 + b3 + 9ab = a3 + b3 + 3ab × 3 = a3 + b3 + 3ab (a + b) = (a + b)3 = (3)3 = 27
Question : Comprehension: Read the following passage and answer the questions given after it. In the late 18th century the Industrial Revolution began to transform life in Britain. Until then, most people lived in the countryside and made their living from farming. By the mid-19th century, most people in Britain lived in towns and made their living from mining or manufacturing industries. In 1712 a man named Thomas Newcomen (1663-1729) made primitive steam engines for pumping water from mines. In 1769 James Watt (1736-1819) patented a more efficient steam engine. In 1785 his engine was adapted to driving machinery in a cotton factory. The use of steam engines to drive machines slowly transformed the industry. Meanwhile, during the 1700s Britain built up a great overseas empire. The North American colonies were lost after the War of Independence 1776-1783. On the other hand, after the Seven Years' War 1756-1763, Britain captured Canada and India. Britain also took Dominica, Grenada, St. Vincent and Tobago in the West Indies. In 1707 the Act of Union was passed. Scotland was united with England and Wales. England became part of Great Britain. Owning land was the main form of wealth in the 18th century. Political power and influence were in the hands of rich landowners. At the top were the nobility. Below them were a class of nearly rich landowners called the gentry. In the early 18th century there were another class of landowners called yeomen who were small landowners, described as farmers of the middle class. However, during the century this class became less and less numerous. However other middle class people such as merchants and professional men became richer and more numerous, especially in the towns. Below them were the great mass of the population, craftsmen and labourers. In the 18th century, probably half the population lived at subsistence or bare survival levels. In the early 18th century England suffered from gin drinking. It was cheap and it was sold everywhere as you did not need a license to sell it. Many people ruined their health by drinking gin. Sadly, for many poor people drinking gin was their only comfort. The situation improved after 1751 when a tax was imposed on gin. At the end of the 17th century, it was estimated the population of England and Wales was about 5 1/2 million. The population of Scotland was about 1 million. The population of London was about 600,000. In the mid-18th century, the population of Britain was about 6 1/2 million. In the late 18th century it grew rapidly and by 1801 it was over 9 million. The population of London was almost 1 million. During the 18th century, towns in Britain grew larger. Nevertheless, most towns still had populations of less than 10,000. However, in the late 18th century new industrial towns in the Midland and the North of England mushroomed. Meanwhile, the population of London grew to nearly 1 million by the end of the century. Other towns were much smaller. The population of Liverpool was about 77,000 in 1800. Birmingham had about 73,000 people and Manchester had about 70,000. Bristol had a population of about 68,000. Sheffield was smaller with 31,000 people and Leeds had about 30,000 people. Question: By the end of the 18th century, the population of Britain was:
Option 1: around 5 1/2 million
Option 2: over 9 million
Option 3: almost 6 1/2 million
Option 4: about 1 million
Correct Answer: over 9 million
Solution : The correct choice will be the second option.
By the end of the 18th century, the population of Britain was over 9 million. The passage mentions that in the late 18th century, the population of Britain grew rapidly, and by 1801, it had
Question : Directions: Select the option figure that is embedded in the given figure. (Rotation is not allowed)
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of all the option figures, only the third option figure is embedded in the given question figure.
Hence, the third option is correct.
Question : Directions: In the following question, some parts of the sentence may have some errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No Error".
It is high time (1) / we renovate (2) / our old house. (3) / No Error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (2)
Solution : The error is in the second part of the sentence.
The use of "renovate" in the present tense is incorrect in this context. When expressing an action that should have been done in the past, one should use the past tense, "renovated".
"It's high time"
Question : Which of the following statement(s) is/are true? I. $\sqrt{12}<\sqrt[3]{16}<\sqrt[4]{24}$ II. $\sqrt[3]{25}>\sqrt[4]{32}>\sqrt[6]{48}$ III. $\sqrt[4]{9}>\sqrt[3]{15}>\sqrt[6]{24}$
Option 1: Only II
Option 2: Only I and III
Option 3: Only I
Option 4: All are true
Correct Answer: Only II
Solution : By evaluating each statement: I. $\sqrt{12}<\sqrt[3]{16}<\sqrt[4]{24}$ ⇒ $12^\frac{1}{2}<16^\frac{1}{3}<24^\frac{1}{4}$ LCM of 2, 3, and 4 = 12 ⇒ $(12^\frac{1}{2})^{12}<(16^\frac{1}{3})^{12}<(24^\frac{1}{4})^{12}$ ⇒ $12^6<16^4<24^3$ ⇒ $(1728)^2<65536<13824$ So, the first statement is false. II. $\sqrt[3]{25}>\sqrt[4]{32}>\sqrt[6]{48}$ Similarly, ⇒ $25^4>32^3>48^2$ ⇒ $390625>32768>2304$ So, the second statement is true. III. $\sqrt[4]{9}>\sqrt[3]{15}>\sqrt[6]{24}$ Similarly,
Question : In a circular race of 4225 m, X and Y start from the same point and at the same time, at speeds of 54 km/hr and 63 km/hr, respectively. When will they meet again for the first time on the track, when they are running in opposite directions?
Option 1: 140 seconds
Option 2: 150 seconds
Option 3: 130 seconds
Option 4: 120 seconds
Correct Answer: 130 seconds
Solution : Relative speed = $54 + 63 = 117$ km/hr Time is taken for both to meet for the first time on the track $=\frac{\text{Distance}}{\text{Speed}} = \frac{4.225}{117} = 0.036 \text{ hours} = 0.036 \times 3600$ seconds = 130 seconds Hence, the correct answer is 130
Question : Which one of the following organisations is not having its headquarters in Geneva?
Option 1: World Trade Organisation
Option 2: World Health Organisation
Option 3: International Labour Organisation
Option 4: International Civil Aviation Organisation
Correct Answer: International Civil Aviation Organisation
Solution : Correct answer is International Civil Aviation Organization
World Trade Organisation was founded in 1995, World Health Organisation was founded in 1948 & International Labour Organisation was founded in 1919 and all of the three organizations have their headquarter at Geneva, Switzerland.
International
Question : Who was the recipient of the National Devdasi Award in 2016?
Option 1: Geeta Kapoor
Option 2: R Muthukannammal
Option 3: Prerana Deshpande
Option 4: Dr Sohini Ray
Correct Answer: Prerana Deshpande
Solution : The Correct Option is Prerana Deshpande
Globally, Prerana Deshpande is a renowned Kathak dancer. Aficionados consider Prerana Deshpande, one of the greatest solo Kathak dancers of all time, to be a highly skilled choreographer and a solo dancer of great distinction.
Question : Directions: In this question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3) which may improve the sentence. Choose the correct alternative. In case, no improvement is needed your answer is (4).
The majority of the rain-fed Indian rivers, either dry up or become trickle after the monsoon.
(1) the trickle
(2) a trickle
(3) an trickle
(4) No Improvement
Solution : The correct choice is the second option.
In this sentence, "trickle" is used to describe the state of the rivers after the monsoon. To become a trickle means to flow in a thin, gentle stream, which makes the sentence grammatically accurate.
Therefore, the correct
Question : Select the correct passive form of the given sentence. They are lifting the car with a crane.
Option 1: The car was being lifted with a crane.
Option 2: The car is being lifted with a crane.
Option 3: The car had lifted with a crane.
Option 4: The car is lifted with a crane.
Correct Answer: The car is being lifted with a crane.
Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active sentence becomes the subject in
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