Staff Selection Commission Combined Graduate Level Exam
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the following set. (6, 22, 14); (8, 30, 19) (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.)
Option 1: (12, 46, 27)
Option 2: (4, 18, 11)
Option 3: (7, 26, 17)
Option 4: (9, 34, 22)
Correct Answer: (4, 18, 11)
Solution : Given: (6, 22, 14); (8, 30, 19)
Here, the pattern followed is as follows – (6, 22, 14)→(14 × 2) – 6 = 28 – 6 = 22 (8, 30, 19)→(19 × 2) – 8 = 38 – 8 = 30 Let's check the options – First option: (12, 46, 27)→(27 × 2) – 12 = 54 – 12 = 42 ≠ 46 Second option: (4, 18, 11)→(11 × 2) – 4 = 22 – 4 = 18 Third option: (7, 26, 17)→(17 × 2) – 7 = 34 – 7 = 27 ≠ 26 Fourth option: (9, 34, 22)→(22 × 2) – 9 = 44 – 9 = 35 ≠ 34
So, only the second option follows the same pattern as followed by the given set of numbers. Hence, the second option is correct.
Question : A, B, and C are three angles of a triangle. If $A-B=45^{\circ}$ and $B-C=15^{\circ}$ then $\angle A=$?
Option 1: 83°
Option 2: 85°
Option 3: 95°
Option 4: 75°
Correct Answer: 95°
Solution : Given, $A-B=45^{\circ}$ And $B-C=15^{\circ}$ So, $A=45^{\circ}+B$ And, $C=B-15^{\circ}$ By the angle sum property of a triangle, $A+B+C=180^\circ$ ⇒ $45^{\circ}+B+B+B-15^{\circ}=180^{\circ}$ ⇒ $3B+30^\circ = 180^\circ$ ⇒ $B = 50^\circ$ Now, $A=45^{\circ}+B= 45^{\circ}+50^\circ= 95^\circ$ Hence, the correct answer is $95^\circ$
Question : Identify the organism that is not a pseudocoelomate.
Option 1: Ancylostoma
Option 2: Ascaris
Option 3: Wuchereria
Option 4: Scorpions
Correct Answer: Scorpions
Solution : The correct answer is Scorpions.
Mesoderm, a tissue layer that supports and facilitates movement, partially lines the pseudocoelom, the bodily cavity found in pseudocoelomate animals. The bodily cavity is divided into two sections by the mesoderm layer. Scorpions belong to the group Arthropoda which possesses a true-body cavity, i.e.coelom.
Question : Directions: Select the option that is related to the third word in the same way as the second word is related to the first word. (The words must be considered meaningful English words and must not be related to each other based on the number of letters/consonants/vowels in the word.) Doctor : Hospital :: Lawyer : ?
Option 1: Court
Option 2: Temple
Option 3: School
Option 4: House
Correct Answer: Court
Solution : Given: Doctor : Hospital :: Lawyer : ?
Like, a doctor works in the hospital. Similarly, a lawyer works in the court.
Hence, the first option is correct.
Question : The fuel used in an atomic reactor is
Option 1: Coal
Option 2: Petrol
Option 3: Combustable gases
Option 4: Uranium
Correct Answer: Uranium
Solution : The correct option is Uranium.
The fuel used in an atomic reactor, also known as a nuclear reactor, is uranium or plutonium. These elements undergo a controlled nuclear reaction, in which the nucleus of an atom is split, releasing a large amount of energy in the form of heat. This heat is then used to produce steam, which drives turbines connected to generators, ultimately producing electricity.
Question :
Directions: In the following question, select the related word from the given alternatives. Play : Actor :: Concert : ?
Option 1: Symphony
Option 2: Musician
Option 3: Plano
Option 4: Percussion
Correct Answer: Musician
Solution : Given: Play : Actor :: Concert : ?
An actor performs in a play. Similarly, a musician performs in a concert.
Hence, the second option is correct.
Question : A can do as much work in 4 days as B can do in 5 days and B can do as much work in 6 days as C in 7 days. In what time will C complete a piece of work that A can do in a week?
Option 1: $10\frac{5}{24}$ days
Option 2: $4\frac{4}{5}$ days
Option 3: $6\frac{8}{15}$ days
Option 4: $12\frac{6}{19}$ days
Correct Answer: $10\frac{5}{24}$ days
Solution : A's 4-day work = B's 5-day work The ratio time is taken by A and B = 4 : 5 B's 6-day work = C's 7-day work The ratio of time taken by B and C = 6 : 7 Combining the two ratios, we get: The ratio of time taken by A, B and C, A : B : C = 4 × 6 : 5 × 6 : 7 × 5 = 24 : 30 : 35 The ratio efficiency of A : B : C = $\frac{1}{24}:\frac{1}{30}:\frac{1}{35} = 35:28:24$ Let one day's work of A, B, and C be 35, 28 and 24 units. 7 days work of A = $7\times 35 = 245$ units 245 units completed by C = $\frac{245}{24}=10\frac{5}{24}$ Hence, the answer is $10\frac{5}{24}$ days.
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. Any (1) _____ that revolves around a planet is a satellite. Mother Earth has a natural satellite on the moon. The Earth is circled by a lot of man-made or artificial satellites. In 1957, the Soviet Sputnik was the first to be (2) _____ into space. There are currently a number of artificial satellites launched into space by various nations. These satellites make it possible for us to talk on the phone, watch television, predict the weather, map the various surfaces of the earth and learn more about the world in which we live. How does a satellite get started? It is typically launched into space by means of a rocket. After ascending into the thinner air layers above the earth, the satellite is released from the rocket. For a successful satellite launch, a rocket's speed is carefully calculated and controlled. Every object in space is pushed towards the Earth's centre by gravity. The inertia of motion will propel the object into space if it has its own velocity of motion. When the orbital velocity is exactly right, these two opposing forces are balanced, causing the satellite to (3) _____ towards the earth while still hovering over its surface. earth in a 24-hour period; It doesn't change when compared to a point on the surface of the earth. These orbits are typically used by satellites for communication and weather. The camera on the weather satellites takes pictures and sends them back to Earth. These are helping aid in weather forecasting. Radio receivers and amplifiers on communication satellites can (4) _____ waves back at a frequency that is different from the one the satellite received. The beaming frequencies of satellites that are 'parked' too close to one another must not interfere with one another. Television signals can be transmitted from one location to another using broadcast satellites, and scientists can (5) _____ scientific data from numerous satellites. Select the most appropriate option to fill in the blank no.2.
Option 1: lobbed
Option 2: launched
Option 3: floated
Option 4: tossed
Correct Answer: launched
Solution : The correct choice is the second option.
Launched refers to starting or setting something in motion, as in launching a rocket or a satellite.
The meanings of the other options are as follows:
Therefore, the correct sentence is: "In 1957, the Soviet Sputnik was the first to be launched into space."
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).
I hope you will be able to steer ahead of the will anti-social elements.
(1) steer clear
(2) steer free
(3) steer out
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 1
Solution : The correct improvement for the sentence is: steer clear.
Explanation: The phrase "steer clear" means to avoid or stay away from something, especially something undesirable or harmful, which is the intended meaning in this context. It is a common and idiomatic expression.
steer free
steer out
Question : Select the correct active form of the given sentence. The catch should not be dropped.
Option 1: Don’t drop the catch.
Option 2: You would not drop the catch.
Option 3: Have you dropped the catch?
Option 4: Let the catch not be dropped.
Correct Answer: Don’t drop the catch.
Solution : The correct choice is the first option.
Active voice emphasises the doer of the action, while passive voice emphasises the receiver. To convert passive to active, we make the subject perform the action and rephrase the verb.
The structure of the active sentence in the case of the imperative sentence is: "Don't + base form of the verb + object."
Therefore, the active voice would be: "Don't drop the catch."
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