Staff Selection Commission Multi Tasking Staff Exam
Question : The radioactive Strontium-90 causes:
Option 1: Brain cancer
Option 2: Skin cancer
Option 3: Lung cancer
Option 4: Bone cancer
Correct Answer: Skin cancer
Solution : The correct answer is Skin cancer.
The radioactive Strontium 90 causes skin cancer, Strontium 90 is a part of polluted soil at sites which were previously affected by nuclear explosions. Sr 90 is a radioactive metal released into the environment by atomic testing it
Question : If the mean of two numbers is 12, and the difference between the two numbers is 6, find the two numbers.
Option 1: 2 and 22
Option 2: 14 and 10
Option 3: 15 and 9
Option 4: 3 and 24
Correct Answer: 15 and 9
Solution : Let the two numbers be a and b. Given that the mean of the two numbers is 12, ⇒ $\frac{a + b}{2}$ = 12 ⇒ a + b = 24 ___(1) Given that the difference between the two numbers is 6, ⇒ a
Question : A person lends a certain sum of money at the rate of 6% per annum on simple interest and the interest received in 13 years is Rs. 220 less than the sum lent. What is the sum lent?
Option 1: Rs. 1000
Option 2: Rs. 600
Option 3: Rs. 800
Option 4: Rs. 1200
Correct Answer: Rs. 1000
Solution : Given: Rate = 6% Time = 13 years Let the principal be $P$. So, simple interest = $P-220$ We know, Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$ $⇒P - 220 = \frac{P × 6 × 13}{100}$ $⇒100P - 22000 = 78P$ $⇒22P =
Question : Select the most appropriate synonym of the given word. Expository
Option 1: Illustrative
Option 2: Temperamental
Option 3: Obligatory
Option 4: Dubious
Correct Answer: Illustrative
Solution : The correct choice is the first option.
Expository refers to the act of explaining or describing something in a detailed and informative manner. Illustrative also implies providing examples or explanations to make something clear or understandable.
The meanings of the other words are:
Question : Directions: In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? _bcab_abc_b_
Option 1: acac
Option 2: bbca
Option 3: caca
Option 4: aacc
Correct Answer: acac
Solution : Given: _bcab_abc_b_
First, divide the series before filling it→_bc / ab_ / abc / _b_ Now, check the order of the letters in the given series→abc / abc / abc / abc (abc is repeated in the series.)
The
Question : A train passes two bridges of lengths 400 metres and 200 metres in 80 seconds and 60 seconds, respectively. What is the length (in metres) of the train?
Option 1: 200
Option 2: 400
Option 3: 350
Option 4: 720
Correct Answer: 400
Solution : Let the speed of the train be $y$ m/s and the length of the train be $x$ metres. $\text{Speed}=\frac{\text{Distance}}{{\text{Time}}}$ Case – 1: Total distance = ($x+400$) m Time = 80 seconds $y=\frac{x+400}{80}$ ---(1) Case – 2: Total distance = ($x+200$) m Time = 60 seconds
Question : The number of live births per thousand persons in a year is called ____________.
Option 1: growth rate
Option 2: fertility rate
Option 3: death rate
Option 4: birth rate
Correct Answer: birth rate
Solution : The correct answer is the birth rate.
The birth rate is also known as natality. The number of live births per thousand people in a year is known as the birth rate. The first census was conducted in 1872 under Lord Mayo, and
Question : Which team lost to Dabang Delhi KC in the finals of the Pro Kabaddi League Season 8?
Option 1: Puneri Paltan
Option 2: Patna Pirates
Option 3: Gujarat Giants
Option 4: UP Yoddha
Correct Answer: Patna Pirates
Solution : The correct answer is Patna Pirates.
In the final match on February 25, 2022, Dabang Delhi KC narrowly defeated Patna Pirates 37–36 to win the Pro Kabaddi League Season 8 title. The all-around player Vijay (14 points) and top raider Naveen Kumar (13 points)
Question : Which of the following statements regarding seasonal unemployment is correct?
Option 1: It happens when people are not able to find jobs during some months of the year.
Option 2: It happens mainly in urban areas.
Option 3: If a field requires 4 people, and 7 are employed, then 3 people are seasonally unemployed.
Option 4: People who do not depend upon agriculture usually face such kind of unemployment.
Correct Answer: It happens when people are not able to find jobs during some months of the year.
Solution : The correct option is It happens when people are not able to find jobs during some months of the year.
Seasonal unemployment occurs when individuals face job scarcity during specific
Question : Manny bought an AC for INR 12000 and paid INR 400 for transportation. Then he sold it for INR 14000. Find his profit percentage.
Option 1: 12.90%
Option 2: 13.1%
Option 3: 13%
Option 4: 12.80%
Correct Answer: 12.90%
Solution : Manny bought an AC for INR 12000 and paid INR 400 for transportation. His total expenditure = 12000 + 400 = 12400 He sold it for INR 14000. Profit percentage = $\frac{14000-12400}{12400}×100=\frac{1600}{12400}×100=12.90$% Hence, the correct answer is 12.90%.
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