Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: What should come in place of (?) in the given series based on the English alphabetical order? JYB, LVD, NSF, PPH, ?
Option 1: SMK
Option 2: TMK
Option 3: RMJ
Option 4: SNJ
Correct Answer: RMJ
Solution : Given: JYB, LVD, NSF, PPH, ?
Add 2 to the place value of the first and third letters and subtract 3 from the place value of the second letter of the previous term to obtain the next term in the series – JYB→J + 2
Question :
Debenture holders of a company are its:
Option 1:
shareholders
Option 2:
creditors
Option 3: debtors
Option 4: directors
Correct Answer:
Solution : The correct option is creditors.
The owners of the company are its shareholders. Holders of debt instruments are merely lenders to the business and are regarded as creditors. A person or business that has made a debenture-based loan to another person or business.
Question : The value of $\text{cosec}^{2}\: 18°-\frac{1}{\cot^{2}72°}$ is:
Option 1: $\frac{1}{\sqrt3}$
Option 2: $\frac{\sqrt2}{3}$
Option 3: $\frac{1}{2}$
Option 4: $1$
Correct Answer: $1$
Solution : $\text{cosec}^{2}\: 18°-\frac{1}{\cot^{2}72°}$ $= \text{cosec}^{2}\: 18° - \frac{1}{\cot^{2}(90-18)°}$ $= \text{cosec}^{2}\: 18° - \frac{1}{\tan^{2}18°}$ $= \text{cosec}^{2}\: 18° - \cot^{2}18°$ $= 1$ Hence, the correct answer is $1$.
Question : Babita is 1.25 times as efficient as Deepak. Working together, they can complete a piece of work in 40 days. In how many days can Deepak alone complete the same piece of work?
Option 1: 84
Option 2: 90
Option 3: 96
Option 4: 100
Correct Answer: 90
Solution : Given: Babita is 1.25 times as efficient as Deepak. They both can complete work in 40 days. Let the efficiency of Deepak be $x$ Efficiency of Babita $= 1.25x$ Effective efficiency $= x+1.25x = 2.25x$ Total work = Efficiency $×$ Time $= 2.25x × 40
Question : Directions: In the following question, a sentence is given with a blank that is to be filled in with an appropriate word. Four alternatives are suggested; choose the correct alternative out of them as your answer.
The economic ___________ has affected our sales tremendously.
Option 1: Touchdown
Option 2: Showdown
Option 3: Slowdown
Option 4: Crackdown
Correct Answer: Slowdown
Solution : The correct choice is the third option, "slowdown".
It means a reduction in the pace or rate of economic activity and fits perfectly in the sentence.
The meanings of the other options are as follows:
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'.
Their luggages which were (1) / kept at the station's (2) / restroom's lockers, was later retrieved. (3) / No Error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The error lies in the first part.
"Luggages" should be replaced with "luggage" to convey the intended meaning that the bags were retrieved from the station's lockers.
"Luggage" is an uncountable noun and doesn't have a plural form. "Were" is also replaced with "was" to
Question : The S.I unit of electric charge is:
Option 1: ampere
Option 2: coulomb
Option 3: e.s.u
Option 4: kelvin
Correct Answer: coulomb
Solution : The correct option is coulomb.
The SI unit of electric charge is the coulomb, symbolized by the letter "C." One coulomb is defined as the charge transported by a constant current of one ampere in one second.
Question : Heating ethanol with excess concentrated sulphuric acid produces:
Option 1: ethane
Option 2: ethyne
Option 3: butane
Option 4: ethene
Correct Answer: ethene
Solution : The correct answer is ethene.
Ethanol is dehydrated (water is removed) when heated with hot, concentrated sulphuric acid, producing ethene. The concentrated acid is recovered unaltered, serving only as a dehydrating agent. H2SO4 is used as a dehydrator during the ethanol-to-ethane
Question : In a 140 m race, Pankaj runs at a speed of $\frac{5}{2}$ m/s. He gives a start of 20 m to Arun and still defeats him by 4 seconds. The speed of Arun is:
Option 1: 1.75 m/s
Option 2: 1.25 m/s
Option 3: 2 m/s
Option 4: 1.5 m/s
Correct Answer: 2 m/s
Solution : Given, Speed of Pankaj = $\frac52$ m/s Pankaj gives 20 m start to Arun. Time taken by Pankaj = Time taken by Arun – 4 seconds Time taken by Pankaj to cover 140 m = $\frac{140}{\frac52}$ = 56 sec ⇒ Time taken by Arun
Question : Directions: In the following question, find the odd letter cluster from the given alternatives.
Option 1: CGFJ
Option 2: EIHL
Option 3: GKIN
Option 4: IMNR
Correct Answer: GKIN
Solution : Let's check the options – First option: CGFJ; C + 4 = G; G – 1 = F; F + 4 = J Second option: EIHL; E + 4 = I; I – 1 = H; H + 4 = L Third option: GKIN; G
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