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 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.) (82, 35, 78) (18, 27, 30)
Option 1: (21, 27, 24)
Option 2: (15, 36, 38)
Option 3: (27, 33, 40)
Option 4: (20, 25, 32)
Correct Answer: (27, 33, 40)
Solution : Given: (82, 35, 78); (18, 27, 30)
In the given sets, divide the sum of the first two numbers by 3 and then multiply by 2 to get the third number. (82, 35, 78)→{(82 + 35) ÷ 3} × 2 = {117 ÷
Question : Steel is used to make a hemispherical bowl that is 0.37 cm thick. The bowl's inner radius is 6 cm. Find the bowl's outside curved surface area (take $\pi=\frac{22}{7}$).
Option 1: 532 cm2
Option 2: 255.0548 cm2
Option 3: 484 cm2
Option 4: 523.4107 cm2
Correct Answer: 255.0548 cm2
Solution : Given: Steel is used to make a hemispherical bowl that is 0.37 cm thick. The bowl's inner radius is 6 cm. According to the formula, ⇒ Outer radius = 6 + 0.37 = 6.37 cm $\therefore$ Curved surface area = 2 × 227
Question : If a speed of rotation of the earth increases, the weight of the body
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : The correct answer is decreases.
According to centrifugal acceleration formulae, as angular speed increases, the net acceleration due to gravity decreases. As a result, the weight will reduce. Alternatively, as the rotational speed of earth increases, the gravity at equator decreases and as a result the
Question : Select the most appropriate SYNONYM of the underlined word in the given sentence. Truth can never be concealed from anyone.
Option 1: Separated
Option 2: Borrowed
Option 3: Disguised
Option 4: Snatched
Correct Answer: Disguised
Solution : The correct choice is the third option.
In the given sentence, the word concealed is used to convey the idea that truth cannot be hidden or kept secret from anyone. Among the options, disguised is the most suitable choice, as it implies altering the
Question : Directions: If X – Y means that X is the mother of Y, X × Y means that X is the father of Y and X ÷ Y means that X is the sister of Y, then which of the following expressions shows that Q is the son of P?
Option 1: P – Q ÷ R
Option 2: P – Q × R
Option 3: Q – P × R
Option 4: R × Q – P
Correct Answer: P – Q × R
Solution : Given: X – Y means that X is the mother of Y. X × Y means that X is the father of Y. X ÷ Y means that X is the sister of Y.
Now, let's check the options – First
Question : Select the most appropriate option to improve the underlined segment in the given sentence. If there is no need to improve it, select ‘No improvement’.
Try to avail of every opportunity that comes your way.
Option 1: avail to
Option 2: avail yourself of
Option 3: No improvement
Option 4: availing of
Correct Answer: avail yourself of
Solution : The correct choice is the second option.
Avail yourself of is the correct idiomatic usage, which means to take advantage of. This helps convey the intended meaning that one should try to take advantage of every situation that comes one's way.
Therefore,
Question : What is the LCM of $\left(8 x^3+80 x^2+200 x\right)$ and $\left(4 x^4+16 x^3-20 x^2\right)$?
Option 1: $8 x^2(x+5)^2(x-1)$
Option 2: $8 x^2(x-1)^2(x+5)$
Option 3: $4 x^2(x-1)^2(x+5)$
Option 4: $4 x^2(x+5)^2(x-1)$
Correct Answer: $8 x^2(x+5)^2(x-1)$
Solution : Consider, $(8 x^3+80 x^2+200 x)$ Taking $8x$ as common, we get, $=8x(x^2+10x+25)$ $=8x(x^2+5x+5x+25)$ $=8x(x(x+5)+5(x+5))$ $=8x(x+5)^2$ Now consider, $(4 x^4+16 x^3-20 x^2)$ Taking $4x^2$ as common, we get, $=4x^2(x^2 + 4x-5)$ $=4x^2(x^2-x+5x-5)$ $=4x^2(x(x-1)+5(x-1))$ $=4x^2(x-1)(x+5)$ $\therefore$ LCM $=8x^2(x+5)^2(x-1)$ Hence, the correct answer is $8x^2(x+5)^2(x-1)$.
Question : Study the given chart and answer the following question. What is the central angle corresponding to the production of steel by Kerala?
Option 1: $82^\circ$
Option 2: $65.8^\circ$
Option 3: $75.2^\circ$
Option 4: $72^\circ$
Correct Answer: $72^\circ$
Solution : From the pie chart provided: Total production = 220 + 240 + 180 + 160 + 200 = 1000 Production in Kerala = 200 Central angle = $\frac{\text{Production in kerala}}{\text{Total production}}\times 360^\circ$ = $\frac{200}{1000}\times 360^\circ$ = $72^\circ$ Hence, the correct answer is $72^\circ$.
Question : Select the correct option to substitute the underlined segment in the given sentence.
He had given me that book in 1999.
Option 1: did given me
Option 2: was given me
Option 3: gives me
Option 4: gave me
Correct Answer: gave me
Solution : The correct option to substitute the underlined segment is the fourth option.
The original sentence is in the past perfect tense ("had given"), but for clarity and simplicity, it should be expressed in the simple past tense as the time reference is given.
Question : In which of the following states India's first Green Rail Corridor was launched in October 2022?
Option 1: Karnataka
Option 2: Maharashtra
Option 3: Himachal Pradesh
Option 4: Tamil Nadu
Correct Answer: Tamil Nadu
Solution : The correct answer is Tamil Nadu.
The Rameswaram-Manamadurai track in Tamil Nadu was chosen as the first green train corridor. These corridors are human waste-free zones. It was inaugurated on July 24, 2016. The 114-kilometre Rameswaram-Manamadurai railway line has been equipped with bio-toilets.
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