Staff Selection Commission Sub Inspector Exam
Question : Copacabana beach is situated in __________.
Option 1: Peru
Option 2: Australia
Option 3: Mexico
Option 4: Brazil
Correct Answer: Brazil
Solution : The correct answer is Brazil.
Situated along the Atlantic shore, Copacabana Beach extends from Posto Dois to Posto Seis and stands as a vibrant centrepiece in Rio de Janeiro, Brazil. Renowned globally, it's celebrated for its lively atmosphere and spans a 4-kilometre coastline.
Question : Directions: A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two matrices, given below. The columns and rows of Matrix (I) are numbered from 0 to 4 and that of Matrix (II) are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g. B can be represented by 01, 10, 22, etc, and F can be represented by 55, 76, 86, etc. Similarly, you have to identify the set for the given word - CAGE. Matrix I
Matrix II
Option 1: 95, 82, 31,14
Option 2: 20, 00, 65, 40
Option 3: 14, 20, 41, 86
Option 4: 00, 21, 41, 95
Correct Answer: 20, 00, 65, 40
Solution : Given: CAGE
Number representations of each letter – C→02, 11, 20, 31, 43 A→00, 14, 23, 34, 42 G→56, 65, 77, 87, 97 E→04, 13, 24, 33, 40
First option: 95, 82, 31,14; C, A, G, and E cannot be represented as 95, 82, 31, and 14 respectively. Second option: 20, 00, 65, 40; All the letters of the word CAGE can be represented through this option. Third option: 14, 20, 41, 86; C, A, G, and E cannot be represented as 14, 20, 41 and 86 respectively. Fourth option: 00, 21, 41, 95; C, A, G, and E cannot be represented as 00, 21, 41, and 95 respectively.
So, CAGE can be represented by using the codes 20, 00, 65, 40. Hence, the second option is correct.
Question : If $x^2-8x+1=0$, what is the value of $(x^2+\frac{1}{x^2})$?
Option 1: $18$
Option 2: $34$
Option 3: $40$
Option 4: $62$
Correct Answer: $62$
Solution : Given: $x^2-8x+1=0$ Dividing both sides by $x$, we get, $⇒x-8+\frac{1}{x}=0$ $⇒x+\frac{1}{x}=8$ Squaring both sides, we get, $⇒(x+\frac{1}{x})^2=8^2$ $⇒x^2+\frac{1}{x^2}+2=64$ $\therefore x^2+\frac{1}{x^2}=64-2=62$ Hence, the correct answer is $62$.
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".
The servant (1) / hanged the lamp (2) / on the wall. (3) / No error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (2)
Solution : The error lies in the second part of the sentence.
The word hanged is incorrect in this context. Both hung and hanged are the past participle forms of the verb hang. The correct verb form to use when suspending or attaching something, like a lamp, is hung.
Hanged is typically used when referring to the act of executing someone by hanging them from a noose, not for hanging objects on a wall.
Therefore, the correct sentence is: The servant hung the lamp on the wall.
Question : The period of revolution of a geostationary satellite is
Option 1: 365 days
Option 2: 30 days
Option 3: 24 hours
Option 4: changing continuously
Correct Answer: 24 hours
Solution : The correct option is 24 hours.
An orbital period for a geostationary satellite is equal to one sidereal day, which is the length of time it takes for the Earth to complete one rotation of its axis. It takes the Earth around 23 hours, 56 minutes, and 4 seconds to complete one revolution. In other words, a geostationary satellite orbits the planet once in the same amount of time as it takes the planet to rotate once.
Question : Comprehension: In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank. Among the largest species of cats in the world, tigers are powerful hunters with (1)________ teeth, strong jaws, and agile bodies. They range across Asia, from Russia all the way to Sumatra and mainland Southeast Asia. Researchers still have much to learn (2) ________ these beautiful, endangered (3) ________. There is currently one recognised species of tiger, Panthera tigris. Scientists have further (4) ________ the tiger into nine subspecies: the extinct Bali, Caspian, and Javan subspecies, and the living Malayan, Sumatran, South China, Indochinese, Bengal, and Amur (or Siberian) subspecies. Of these six subspecies, AZA-accredited zoos currently manage three: Amur, Malayan, and Sumatran. The Smithsonian's National Zoo and Conservation Biology Institute is home to Sumatran and Amur tigers; Sumatran tigers are (5) ________ as critically endangered on the International Union for Conservation of Nature's Red List, and Amur tigers have been classified as endangered. Question: Select the most appropriate option to fill in the blank number 1.
Option 1: long
Option 2: small
Option 3: blunt
Option 4: sharp
Correct Answer: sharp
Solution : The fourth option is the correct choice.
The context describes tigers as powerful hunters with certain characteristics. In this context, the word sharp is a fitting choice for the blank, as it complements the idea of powerful hunters, referring to sharp teeth. This adjective adds to the description of the tiger's physical attributes, emphasising the sharpness of their teeth.
Therefore, the correct answer is sharp.
Question : The discovery and understanding of electromagnetic induction is based on a long series of experiments carried out by ______.
Option 1: Planck and Fermi
Option 2: Einstein
Option 3: Faraday and Henry
Option 4: Rutherford
Correct Answer: Faraday and Henry
Solution : The correct answer is Faraday and Henry.
The exploration and comprehension of electromagnetic induction resulted from extensive experiments conducted by Michael Faraday and Joseph Henry. Through their observations, Faraday deduced that an electromotive force (emf) is generated when there is a dynamic change in magnetic flux across a coil over time. This groundbreaking insight laid the foundation for the principles of electromagnetic induction, influencing the development of various electrical devices and technologies.
Question : The adoption of the High Yielding Variety Programme in Indian Agriculture started in.
Option 1: 1968
Option 2: 1967
Option 3: 1966
Option 4: 1965
Correct Answer: 1966
Solution : The correct answer is 1966.
The High Yielding Variety Programme (HYVP) was established in 1966 to achieve food self-sufficiency by 1970-71. The program's fundamental idea was to boost food grain productivity using the most recent crop input varieties. This program in the fourth five-year plan was a breakthrough in India's agricultural development history.
Question : Directions: If + means −, − means ×, × means ÷ and ÷ means +, what will come in place of (?) in the following equation? 79 ÷ 64 × 8 − 7 + 12 = ?
Option 1: 123
Option 2: 117
Option 3: 138
Option 4: 147
Correct Answer: 123
Solution : Given: + means −, − means ×, × means ÷ and ÷ means + 79 ÷ 64 × 8 − 7 + 12 = ?
After interchanging the given mathematical signs, we get – ⇒ 79 + 64 ÷ 8 × 7 – 12 ⇒ 79 + 8 × 7 – 12 ⇒ 79 + 56 – 12 = 123
So, 123 is the answer to the given equation. Hence, the first option is correct.
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13-Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed.) (7, 35, 42); (4, 20, 24)
Option 1: (8, 56, 72)
Option 2: (6, 36, 48)
Option 3: (9, 45, 54)
Option 4: (12, 60, 48)
Correct Answer: (9, 45, 54)
Solution : Given: (7, 35, 42); (4, 20, 24)
Like, (7, 35, 42)→7 × 5 = 35; 7 × 6 = 42 (4, 20, 24)→(4 × 5) = 20; 4 × 6 = 24
Let's check the options – First option: (8, 56, 72)→8 × 5 = 40 ≠ 56; 8 × 6 = 48 ≠ 72 Second option: (6, 36, 48)→6 × 5 = 30 ≠ 36; 6 × 6 = 36 ≠ 48 Third option: (9, 45, 54)→9 × 5 = 45; 9 × 6 = 54 Fourth option: (12, 60, 48)→12 × 5 = 60; 12 × 6 = 72 ≠ 48
So, only the third option follows the same pattern as followed by the given set of numbers. Hence, the third option is correct.
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