Staff Selection Commission Sub Inspector Exam
Question : A cylinder 84 cm long is made of steel. Its external and internal diameters are 10 cm and 8 cm respectively. What is the volume of the steel in the cylinder (in 10–3 m3 and correct up to three decimal places)?
Option 1: 2.112
Option 2: 9.504
Option 3: 2.376
Option 4: 4.752
Correct Answer: 2.376
Solution : The volume of a hollow cylinder =$ \pi (R^2 - r^2)h$, where $R$ is the external radius and $r$ is the internal radius, $h$ = height Given: Height of the cylinder, $h$ = $84$ cm External radius of the cylinder, $R = \frac{10}{2} = 5$
Question : Comprehension: Read the given passage and answer the questions that follow.
Ghana was the first true African state. The reason why we are saying this is that most African states lived in tribal villages but Ghana was the centre of the gold trade. This gold trade opened new possibilities for the Ghanaians. The gold trade roots back to the 4th century, when African Soninke tribes were under the rule of the Maga, a Berber clan originating from Morocco. This clan has mastered trans-Saharan camel travel. They were known for trading salt for gold from the Soninke.
When the Arabs invaded North Africa, there was an upsurge in the trade in gold. Ghana became rich and soon after, the Soninke ousted the Maga and built their own nation under Kaya Magan Cisse, who became the Soninke king around 790.
Ghana’s ancient capital, Koumbi Salah, was the city where Africans and Berbers met and traded. Arab traders in the 9th century described Ghana as ‘the land of gold.’ The gold came from Asante and Senegal to the south and west. The trade routes led north and east to Morocco, Libya Aksum and so on to Europe and Asia.
Ghana had reached its peak in the 10th century. This was the country which controlled both the gold and salt trades. Other trading goods included woollen clothes, luxury items, leather goods and slaves. Traders transported goods hundreds of kilometres across the Sahara desert with camel caravans. Question: Maga, a Berber clan originated from:
Option 1: Morocco
Option 2: Senegal
Option 3: Aksum
Option 4: Libya
Correct Answer: Morocco
Solution : The correct choice is the first option.
The passage states that Maga, a Berber clan, originated from Morocco. Here's the relevant excerpt from the passage: "The gold trade roots back to the 4th century, when African Soninke tribes were under the rule of the Maga,
Question : The work done by the string of a simple pendulum during one complete oscillation is equal to
Option 1: The total energy of a pendulum
Option 2: Kinetic energy of the pendulum
Option 3: Potential energy of the pendulum
Option 4: Zero
Correct Answer: Zero
Solution : The correct option is Zero.
The work done by a basic pendulum's string during one complete oscillation is zero. This is because the tension in the string is always perpendicular to the bob's movement. A force's work is equal to its force multiplied by its
Question : "Dollar Bahu" is written by whom among the following Indian authors?
Option 1: Kiran Desai
Option 2: Arundhati Roy
Option 3: Sudha Murty
Option 4: Khushwant Singh
Correct Answer: Sudha Murty
Solution : The correct option is Sudha Murty.
"Dollar Bahu" is a novel written by Indian author Sudha Murty. Sudha Murty is a well-known writer, social worker and the chairperson of Infosys Foundation, a non-profit organization. The book explores themes of family, values and the
Question : Select the correctly spelt word.
Option 1: wengeance
Option 2: vengance
Option 3: wengence
Option 4: vengeance
Correct Answer: vengeance
Solution : The correct choice is the fourth option.
Explanation: In terms of grammatical and spelling considerations, vengeance is the accurate and accepted spelling of the word that refers to the act of seeking revenge or retribution for a perceived wrongdoing or harm.
Therefore, the correct
Question : Select the most appropriate synonym of the given word. INTRIGUING
Option 1: monotonous
Option 2: gripping
Option 3: simultaneous
Option 4: investigating
Correct Answer: gripping
Solution : The correct choice is the second option.
Explanation: Intriguing means something that is fascinating, interesting, or captivating, often prompting curiosity or interest. Gripping is the synonym for intriguing, signifying something that's engaging or compelling, holding one's attention.
The meanings of the other options are as
Question : Directions: In the following question, select the figure that can be placed at the sign of the question mark (?) from the given alternatives.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to the given figure series – The triangular arrowhead and square arrowhead are interchanging their positions with each other, while the circular arrowhead remains at the centre. So, following the above pattern, the required figure will be as follows –
Hence, the first option is
Question : Directions: In the question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2) and (3) that may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
The criminal must be killed.
(1) hanged
(2) murdered
(3) hung
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
In this context, the use of "hanged" is appropriate when referring to execution by hanging. It specifies the method of capital punishment.
The meanings of the other options are as follows:
Murdered: While "murdered" is a synonym for
Question : A man bought two bicycles for Rs. 3,000 each. If he sells one bicycle at a profit of 10%, then for how much percentage of profit should he sell the other bicycle so that he makes a profit of 20% on the whole?
Option 1: 15 percent
Option 2: 25 percent
Option 3: 30 percent
Option 4: 10 percent
Correct Answer: 30 percent
Solution : A man bought two bicycles for Rs. 3,000 each. Total cost price = 3000 + 3000 = 6000 He wants a profit of 20% on the whole. So, total selling price should be $6000×\frac{100+20}{100}=7200$ He sells one bicycle at a profit of 10%. $\therefore$
Question : Direction: The pie chart shows the breakup of the monthly expenditure of a person.
The expenditure on food is how much percentage more than the expenditure on savings?
Option 1: 12.21%
Option 2: 15%
Option 3: 13.04%
Option 4: 11%
Correct Answer: 15%
Solution : Expenditure on food = 23 Expenditure on saving = 20 Difference = 23 – 20 = 3 Required percentage = $\frac{3}{20}$ × 100 = 15% Hence, the correct answer is 15%.
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