Staff Selection Commission Multi Tasking Staff Exam
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. Nuclear power for civil use is well (1)_________ in India. Since building the two small boiling water reactors (2)___________ Tarapur in the 1960s, its civil nuclear strategy (3)_________ directed towards complete independence in the nuclear fuel cycle, necessarily (4)__________ it is excluded (5)__________ the 1970 Nuclear Non-Proliferation Treaty (NPT).
Question: Select the most appropriate option to fill in the blank number 3.
Option 1: have
Option 2: have been
Option 3: has been
Option 4: has
Correct Answer: has been
Solution : The most appropriate option to fill in the blank is the third option.
Explanation: In this context, "its civil nuclear strategy" is a singular subject, and the correct verb form in the present perfect tense is, has been directed. Therefore, the correct
Question : Directions: Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: Some apples are oranges. No orange is a grape. Conclusions: I. Some grapes are apples. II. Some oranges are apples.
Option 1: Only conclusion II follows
Option 2: Both conclusions I and II follow
Option 3: Neither conclusion I nor II follows
Option 4: Only conclusion I follows
Correct Answer: Only conclusion II follows
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions – Conclusion I: Some grapes are apples – From the above diagram, it is clear that there is no direct relation between the circles of
Question : Directions: In the following question, select the related number from the given alternatives. 12 : 1728 :: 17 : ?
Option 1: 4913
Option 2: 4927
Option 3: 4943
Option 4: 4963
Correct Answer: 4913
Solution : Given: 12 : 1728 :: 17 : ?
The second number is equal to the cube of the first number of the given pair. Like,12 : 1728→(12)3 = 1728 Similarly, 17 : ?→(17)3 = 4913
Hence, the first option is correct.
Question : An atom of an element has an atomic number of 17 and a mass of 36. The number of neutrons in its nucleus is
Option 1: 17
Option 2: 19
Option 3: 36
Option 4: 53
Correct Answer: 19
Solution : The correct answer is 19.
The atomic number of an element is equal to the number of protons in its nucleus. In this case, the atomic number is 17, therefore there are 17 protons in the nucleus. The mass number of an atom is
Question : A boat can travel at a speed of 15 km/hr in still water. If the speed of the stream is 5 km/hr, find the time taken by the boat to go 80 km downstream.
Option 1: 3 hr
Option 2: 4 hr
Option 3: 6 hr
Option 4: 5 hr
Correct Answer: 4 hr
Solution : Given, Speed of boat in still water = 15 km Speed of stream = 5 km/hr Speed of Downstream = Speed of boat + Speed of stream = 15 + 5 = 20 km/hr We know, Time = $\frac{\text{Distance}}{\text{Speed}}$ $\therefore$ Time taken = $\frac{80}{20}$
Question : The radius of a sphere and that of the base of a cylinder are equal. The ratio of the radius of the base of the cylinder and the height of the cylinder is 3 : 4. What is the ratio of the volume of the sphere to that of the cylinder?
Option 1: 27 : 64
Option 2: 1 : 2
Option 3: 1 : 1
Option 4: 9 : 16
Correct Answer: 1 : 1
Solution : Radius of the sphere = Radius of the cylinder (let it be $r$) The ratio of the radius to the height of the cylinder = 3 : 4 Volume of Sphere = $\frac{4}{3} \pi r^3$ Volume of Cylinder = $\pi r^2 h$ Let
Question : Directions: Two statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All boxes are cubes. All cubes are squares. Conclusions: I. Some boxes are squares. II. Some squares are not cubes.
Option 1: Only conclusion I follows
Option 4: Only conclusion II follows
Correct Answer: Only conclusion I follows
Let's analyse the conclusions – Conclusion (I): Some boxes are squares – From the Venn diagram, we can see that the circle representing boxes is completely overlapped by the
Question : Swadeshi movement was known by which name in deltaic Andhra?
Option 1: National movement
Option 2: Freedom movement
Option 3: Vande Mataram movement
Option 4: Anti-British movement
Correct Answer: Vande Mataram movement
Solution : The correct answer is the Vande Mataram movement.
The Swadeshi movement was known as the Vande Mataram movement in deltaic Andhra. The movement was the strongest in Bengal but it soon became a widespread movement all over India. In deltaic Andhra Pradesh,
Question : Directions: Read the following graph and answer questions
Trade Deficit of a Country (in Crores of Rupees)
Percentage increase in production of fertilizers for a year with respect to its previous year was maximum in the year.
Option 1: 1996
Option 2: 1997
Option 3: 1999
Option 4: 2000
Correct Answer: 1996
Solution : The percentage increase in production compared to previous year for different years are: In 1996 = [$\frac{(40 - 25)}{25}$×100]% = 60%. In 1997 = [$\frac{(60 - 40)}{40}$×100]% = 50%. In 1998 there is a decrease in production. In 1999 = [$\frac{(65 - 45)}{45}$×100]% = 44.44%.
Question : Directions: Which of the following letter clusters will replace the question mark (?) in the given series? LB, NZ, PX, RV, ?
Option 1: TS
Option 2: UT
Option 3: ST
Option 4: TT
Correct Answer: TT
Solution : Given: LB, NZ, PX, RV, ?
In the above-given series, add 2 to the place value of the first letter and subtract 2 from the place value of the second letter. LB→L + 2 = N; B – 2 = Z NZ→N + 2 =
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