Staff Selection Commission Multi Tasking Staff Exam
Question : The polymer obtained by the condensation of hexamethylene diamine and adipic acid is:
Option 1: Nylon 66
Option 2: Terylene
Option 3: Nylon
Option 4: Bakelite
Correct Answer: Nylon 66
Solution : The correct option is Nylon 66.
The polymer formed by the reaction of hexamethylene diamine with adipic acid is known as "Nylon 66". It is a synthetic polyamide made up of repeating units produced from these two monomers. Nylon 66 is well-known for
Question : A sentence has been given with a blank to be filled with an appropriate option. Choose the correct alternative.
______ months later, Steve returned to New York to look for a job.
Option 1: Few
Option 2: A few
Option 3: The few
Option 4: A little
Correct Answer: A few
Solution : The second option is the correct choice.
The phrase a few is the correct choice in this context. It indicates a small, indefinite number of months and is appropriate for expressing the idea that Steve returned to New York after a short period of
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 14, 15, 30, 33, 132, 137, 822, ?
Option 1: 899
Option 2: 829
Option 3: 819
Option 4: 982
Correct Answer: 829
Solution : Given: 14, 15, 30, 33, 132, 137, 822, ?
The pattern follows: + 1; × 2; + 3; × 4; + 5; × 6; + 7. 14 + 1 = 15; 15 × 2 = 30; 30 + 3 = 33; 33 × 4 =
Question : A hollow spherical shell is made of a metal of density 2.5 g/cm³. If the external and the internal radii of the given sphere are 35 cm and 14 cm, respectively, find the mass of the shell. [Use $\pi=\frac{22}{7}$]
Option 1: 398567 g
Option 2: 324120 g
Option 3: 440040 g
Option 4: 420420 g
Correct Answer: 420420 g
Solution : R = outer Radius r = inner radius Volume of the hollow sphere = $\frac{4}{3}\pi$(R3 – r3) = $\frac{4}{3}\pi$(353 – 143) ⇒ $\frac{\text{Mass}}{\text{Density}}$ = $\frac{4}{3}$ × $\frac{22}{7}$ × (42875 – 2744) ⇒ Mass = 2.5 × $\frac{4}{3}$
Question : Directions: Select the option in which the numbers share the same relationship in the set as that shared by the numbers in the given set. (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.) (64, 8, 16) (40, 20, 4)
Option 1: (56, 14, 8)
Option 2: (100, 50, 8)
Option 3: (120, 100, 5)
Option 4: (54, 9,14)
Correct Answer: (56, 14, 8)
Solution : Given: (64, 8, 16); (40, 20, 4)
Multiply the second number with half of the third number, to get the first number – ⇒ (64, 8, 16)→8 × (16 ÷ 2) = 64 ⇒ (40, 20, 4)→20 × (4 ÷ 2) = 40
Question : If INR 1,000 is divided into three parts in the ratio 2 : 3 : 5, find the value of the smallest part.
Option 1: INR 100
Option 2: INR 300
Option 3: INR 200
Option 4: INR 400
Correct Answer: INR 200
Solution : Total amount = INR 1,000 Ratio = 2 : 3 : 5 Value of the smallest part $=\frac{2}{2 + 3 + 5} \times 1000= 200$ Hence, the correct answer is INR 200.
Question : Directions: Select the option figure, that will replace the question mark (?) in the figure given below to complete the pattern.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Here, the geometrical shapes given in the opposite box are changed from shaded to unshaded and unshaded to shaded. On comparing the question figure and all the answer figures, the following figure will combine and make the complete pattern –
Hence, the second option is correct.
Question : Improve the underlined part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct.
Even in time of natural disasters, the farmers had to pay their share of taxes.
Option 1: times of natural
Option 2: timer of natural
Option 3: times of naturally
Option 4: No improvement
Correct Answer: times of natural
Solution : The underlined part can be improved by choosing the first option.
Explanation: The original phrase "Even in time of natural disasters" is grammatically correct but can be refined for better clarity. The suggested improvement, "Even in times of natural disasters" is a more
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.
In order to fall asleep (1)__________ night, strive to turn off all electronic devices at least 30 minutes (2)__________ getting into bed. Allow your eyes to relax and take a break from the (3)__________of a lit screen. Read a book, write in a journal, or write (4)_________ your to-do list for the (5)__________day.
Question:
Select the most appropriate option to fill in the blank number 2.
Option 1: former
Option 2: before
Option 3: previous
Option 4: latter
Correct Answer: before
Solution : The correct choice is the second option.
Explanation: Before is often used as a preposition to denote something that occurs earlier in time than another event. In this context, it conveys that electronic devices should be switched off at least 30 minutes before
Question : Select the most appropriate option to fill in the blank. Food was ___________; guides were not to be found, and the enemy dogged them all the way.
Option 1: Scarce
Option 2: crass
Option 3: chance
Option 4: farce
Correct Answer: Scarce
Solution : The most appropriate option to fill in the blank is the first option.
Explanation: We have to look for an adjective that describes the availability of food in the context provided. The word scarce fits this requirement, as it means in short supply or
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