Staff Selection Commission Multi Tasking Staff Exam
Question : Select the most appropriate option to substitute the bracketed segment in the given sentence. If there is no need to substitute it, select 'No substitution required'
That is not a solution available (to most people for who email has become necessity.)
Option 1: to most people for who email has become a necessity.
Option 2: to most people for whom email has become a necessity.
Option 3: for most people to whom email has became necessity.
Option 4: No substitution required
Correct Answer: to most people for whom email has become a necessity.
Solution : The correct choice is the second option.
Explanation: The relative pronoun "whom" is used to refer to the object of a verb or preposition. In this case, "whom" correctly introduces the subordinate clause "whom email
Question : A man travelled a distance of 110 km in 11 hours. He travelled some distance on foot at 6 km/hr and the remaining distance on a bicycle at 14 km/hr. What is the distance travelled on a bicycle?
Option 1: 66 km
Option 2: 99 km
Option 3: 77 km
Option 4: 88 km
Correct Answer: 77 km
Solution : Let the distance travelled on foot as \(x\) km and the distance travelled on bicycle as \(110 - x\) km. The time taken to travel on foot is \(\frac{x}{6}\) hours and the time taken to travel on bicycle is \(\frac{110 - x}{14}\) hours. Given
Question : Of three positive numbers, the ratio of 1st and 2nd is 8 : 9, and that of 2nd and 3rd is 3 : 4. The product of 1st and 3rd is 2400. The sum of the three numbers is:
Option 1: $45$
Option 2: $85$
Option 3: $95$
Option 4: $55$
Correct Answer: $45$
Solution : Let the first and the second numbers be $8x$ and $9x$. Given, Second Number : Third Number = $3 : 4$ $\frac{9x}{\text{Third number}} = \frac{3}{4}$ So, the third number = $12x$ The product of the first and third numbers is 2400. $8x×12x = 2400$ or,
Question : A man drives his car at a speed of 50 km/hr for 2 hours and then decides to slow down to 40 km/hr till the end of the journey. If his average speed for the journey was 44 km/hr, then for how much time did he drive his car at a speed of 40 km/hr?
Option 1: 2 hours
Option 2: 1 hour
Option 3: 3 hours
Option 4: 4 hours
Correct Answer: 3 hours
Solution : Let the time of driving at 40 km/hr be $t$ hours. The total distance travelled = $( 50 \times 2 + 40 \times t)$ km The total time of travelling = $2 + t$ hours. According to the question, ⇒ $44 = \frac{{50 \times
Question : Directions: Select the option that is related to the third number in the same way as the second number is related to the first number. 441 : 92 :: 169 : ?
Option 1: 2197
Option 2: 2019
Option 3: 2917
Option 4: 2719
Correct Answer: 2197
Solution : Given: 441 : 9261 :: 169 : ?
Multiply the first number by its square root to obtain the second number. Here, 441 : 9261→441 × $\sqrt{441}$ = 441 × 21 = 9261 Similarly, follow the same pattern for 169 – 169 × $\sqrt{169}$ =
Question : U, V, and W together can complete a work in 10 days. If U can work thrice as fast as V and V can work twice as fast as W, then in how many days W alone can complete the same work?
Option 1: 100 days
Option 2: 90 days
Option 3: 63 days
Option 4: 45 days
Correct Answer: 90 days
Solution : Let's the rate of work for U, V, and W are U, V, and W, respectively. It is given that U = 3V and V = 2W ⇒ U = 6W According to the question, Total Work = (U + V + W) ×
Question : Which among the following chemicals is used to purify water as a disinfectant?
Option 1: Chlorine
Option 2: Ethanol
Option 3: Phosphor
Option 4: Teflon
Correct Answer: Chlorine
Solution : The correct answer is Chlorine.
Chlorine is used to purify water as a disinfectant. Chlorine is a yellow-green kind of gas at room temperature and is represented by the symbol ”Cl”. Chlorine has greater density than air. It is a highly effective method of disinfection
Question : Sashi took a loan of Rs. 700 on simple interest for as many years as the rate of interest per annum. If he paid Rs. 343 as interest at the end of the loan period, what was the rate of interest?
Option 1: 6%
Option 2: 4%
Option 3: 10%
Option 4: 7%
Correct Answer: 7%
Solution : Given, Loan amount = Rs 700 Interest amount = Rs 343 We know, Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$ According to the question, Time of interest = Rate of interest ⇒ Simple interest = $\frac{700×\text{Rate × Time}}{100}$ ⇒ 343 = 7 × Rate
Question : What is the value of $\frac{39}{25} \div \frac{13}{5}+\frac{33}{5} \times \frac{4}{11} ?$
Option 1: 3
Option 2: 12
Option 3: 5
Option 4: 15
Correct Answer: 3
Solution : Given: $\frac{39}{25} \div \frac{13}{5}+\frac{33}{5} \times \frac{4}{11}$ = $\frac{39}{25} \times \frac{5}{13}+\frac{33}{5} \times \frac{4}{11}$ = $\frac{3}{5}+\frac{12}{5}$ = $\frac{3+12}{5}$ = $\frac{15}{5}$ = $3$ Hence, the correct answer is 3.
Question : One kilobit is equal to ________ bits.
Option 1: 512
Option 2: 1000
Option 3: 1024
Option 4: 1042
Correct Answer: 1024
Solution : The correct option is 1024.
One kilobit (kbit) is equivalent to 1024 bits in computer science and digital information. This is based on the binary system, which commonly measures data in powers of two.
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