Staff Selection Commission Combined Graduate Level Exam
Question : The purest form of water is
Option 1: Tap water
Option 2: Rain water
Option 3: Ground water
Option 4: Distilled water
Correct Answer: Rain water
Solution : The correct answer is Rain Water.
Rainwater is formed by the condensation of water in the presence of the sun. Water evaporates from water bodies on earth. The impurities in water are removed during the vaporization process, and then that water falls directly on
Question : If $(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}) = 0$ and $x+y+z = 9$, what is the value of $x^{3} + y^{3}+z^{3}-xyz$?
Option 1: 81
Option 2: 361
Option 3: 729
Option 4: 6561
Correct Answer: 729
Solution : Given: $\left ( \frac{1}{x}+\frac{1}{y}+\frac{1}{z} \right )=0$ ⇒ $xy + yz+zx = 0$ Given: $x+y+z = 9$ We know, $x^{3}+y^{3}+z^{3}-3xyz = \left ( x+y+z \right )\left ( x^{2}+y^{2}+z^{2}-xy-yz-zx \right )$ ⇒ $x^{3}+y^{3}+z^{3}-3xyz = \left ( x+y+z \right )\left (\left ( x+y+z \right )^{2}-3\left ( xy+yz+zx \right
Question : Directions: The second number in the given number pairs is obtained by performing certain mathematical operations on the first number. The same operations are followed in all the number pairs, except one. Find that odd number pair.
Option 1: (7, 252)
Option 2: (6, 216)
Option 3: (8, 392)
Option 4: (5, 80)
Correct Answer: (6, 216)
Solution : Let's check each option – First option: (7, 252)→7 × (7 – 1)2 = 7 × 62 = 7 × 36= 252 Second option: (6, 216)→6 × (6 – 1)2 = 6 × 25 = 150 ≠ 216 Third option: (8,
Question : A 100 metres long train is running at a speed of 120 km/h. The time taken to pass a person standing near the line is:
Option 1: 1 second
Option 2: 3 seconds
Option 3: 5 seconds
Option 4: 7 seconds
Correct Answer: 3 seconds
Solution : Given: The distance of the train is 100 m and its speed is 120 km/h. We know that $\text{Time}=\frac{\text{Distance}}{\text{Speed}}$. To convert km/h into m/s, multiply with $\frac{5}{18}$, we get, $120$ km/h =$120\times \frac{5}{18}$ m/s So, the time required to pass a person standing near
Question : Comprehension: In the following passage, some words have been deleted. Fill in the blanks with the help of the options given. Select the most appropriate option for each number. Castles are home to a rich history. From blood feuds to tragic pasts, (1)______ love affairs to alleged ghosts, no castle is ever (2)______ a secret to unveil. Known locally as Chateaux Picomtal, Picomtal Castle (3)______ came under new ownership. During the renovation of the (4)______, a surprising discovery was made. Messages (5)______long ago were found on the floorboards of (6)______ upper chambers. The messages were written (7)______1880 and 1881 by Joachim Martin; the carpenter (8)______ installed the flooring. His messages were a diary of 72 entries of his daily (9)______, personal thoughts along with his emotions and feelings. Joachim’s (10)______is indeed a very personal account of the history of those times. The discovery gives us an honest look at an average person’s daily life over 135 years ago. Question: Select the most appropriate option to fill in the blank no. 9.
Option 1: time
Option 2: being
Option 3: life
Option 4: breath
Correct Answer: life
Solution : The correct choice will be the third option.
In this context, the word that fits best is life. The sentence is likely to describe Joachim Martin's daily life, thoughts, emotions, and feelings documented in the diary.
Therefore, the completed sentence would read: "His messages were
Question : Directions: In the question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3) that may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
There are some bacteria that are survive inside nuclear power stations.
(1) have
(2) were
(3) can
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The correct choice is the third option because are should be replaced with can to convey the intended meaning that certain bacteria have the ability to survive within nuclear power stations. Can is used to express the ability.
Are survive in the original sentence is
Question : Two cities A and B are 135 km apart on a straight track. One car starts from A at 8 a.m. and travels towards B at 25 km/hr. Another car starts from B at 9 a.m. and travels towards A at a speed of 30 km/hr. At what time will they meet?
Option 1: 11 a.m
Option 2: 10 a.m
Option 3: 10.45 a.m
Option 4: 11.30 a.m
Correct Answer: 11 a.m
Solution : Let the bus and car meet after time t hours from 9 a.m. Total distance covered by car and bus together = Total distance between cities = 135 km Distance travelled by car moving at 25 km/hr from 8 a.m. = 25(t + 1)
Question : The average mark obtained by 100 candidates in a certain examination is 30. If the average marks of passed candidates are 35 and those of failed candidates are 10, what is the number of candidates who passed the examination?
Option 1: 60
Option 2: 70
Option 3: 80
Option 4: 90
Correct Answer: 80
Solution : Given: The average mark of 100 candidates is 30. So, total marks = (100 × 30) = 3000 Average marks of passed candidates = 35 Average marks of failed candidates = 10 Let the number of passed candidates be X and the number of failed
Question : A motion moved by a member of Parliament when he feels a minister has committed a breach of privilege of the house by withholding facts of a case is called
Option 1: No confidence motion
Option 2: Censure motion
Option 3: Privilege motion
Option 4: Cut motion
Correct Answer: Privilege motion
Solution : The correct answer is Privilege motion.
Its goal is to hold the accused minister accountable. The Parliament, its members, and its committees are given specific powers, privileges, and immunities under the Constitution. These privileges and rights are governed by the laws that the House
Question : Soap bubble attains spherical shape due to _____.
Option 1: inertia
Option 2: pressure
Option 3: surface tension
Option 4: viscosity
Correct Answer: surface tension
Solution : The answer is surface tension.
Because of surface tension, soap bubbles take on a spherical form. The propensity of liquid surfaces to shrink into the lowest feasible surface area is called surface tension. This is because liquid molecules are attracted to one another,
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