Staff Selection Commission Combined Graduate Level Exam
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).
No one was there on the platform after the train had left.
(1) No on were there on
(2) No one was on there
(3) None was there on
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (4)
Solution : The fourth option is the correct choice.
No improvement is required in the sentence since the given statement is grammatically correct. It effectively conveys the idea that there was nobody on the platform once the train departed.
Question : Select the most appropriate synonym of the underlined word.
The committee wanted us to explain this in detail.
Option 1: Elaborate
Option 2: Trouble
Option 3: Collect
Option 4: Keen
Correct Answer: Elaborate
Solution : The correct answer is the first option.
Elaborate means to explain thoroughly and in detail; to provide more information or details on a particular subject.
The meanings of the other options are as follows:
Trouble: Difficulty or problems; can also refer to making an effort
Question : Each inlet pipe can fill an empty cistern in 84 hours while each drain pipe can empty the same cistern from a filled condition in 105 hours. When the cistern is empty, 9 inlet pipes and 10 outlet pipes are simultaneously opened. After how many hours will the cistern be filled?
Option 1: 84
Option 2: 88
Option 3: 80
Option 4: 90
Correct Answer: 84
Solution : Time taken by inlet pipe = 84 hours Time taken by outlet pipe = 105 hours LCM of 84 and 105 (total work to be done) = 420 units $\therefore$ Efficiency of inlet pipe = $\frac{420}{84}$ = 5 Units Efficiency of outlet pipe = $\frac{420}{105}$
Question : Directions: In a certain code language, PSYCHIC is written as YSPCCIH and CITIZEN is written as TICINEZ. How will MAHATMA be written in that language?
Option 1: HAMAATM
Option 2: AHMAAMT
Option 3: HAMAAMT
Option 4: HAMAMAT
Correct Answer: HAMAAMT
Solution : Given: PSYCHIC is written as YSPCCIH and CITIZEN is written as TICINEZ.
Here, the first and the third letters, and the fifth and the seventh letters have been interchanged and the rest all the letters are written as it is.
Similarly,
So, MAHATMA is coded
Question : Study the following table and answer the question below.
What is the ratio of the total number of male students to that of female students who opted for Biology in schools A and D together?
Option 1: 38 : 31
Option 2: 21 : 38
Option 3: 31 : 28
Option 4: 31 : 38
Correct Answer: 31 : 38
Solution : Total number of male students in school A who opted for Biology, = $900×\frac{30}{100}×\frac{7}{15}$ = 126 Total number of female students in school A who opted for Biology, = $900×\frac{30}{100}×\frac{8}{15}$ = 144 Total number of male students in school D who opted for
Question : A and B are 15 km apart and when travelling towards each other, meet after half an hour, whereas they meet two and a half hours later if they travel in the same direction. The faster of the two travels at a speed of:
Option 1: 15 km/h
Option 2: 18 km/h
Option 3: 10 km/h
Option 4: 8 km/h
Correct Answer: 18 km/h
Solution : Let the speeds of A and B be $a$ km/h and $b$ km/h respectively. When moving on opposite sides, relative speed = (a + b) km/h. When moving on the same sides, relative speed = (a – b) km/h. According to the question, (Using:
Question : Select the most appropriate option to fill in the blank.
She reminds me always that I_______ to be a little more careful.
Option 1: had
Option 2: have
Option 3: must
Option 4: has
Correct Answer: have
Solution : The correct answer is the second option.
The sentence is in the present perfect tense, and the auxiliary verb have is used in such sentences.
The complete sentence is: "She reminds me always that I have to be a little more careful."
Question : The noble gas was used for the treatment of cancer is
Option 1: Hellium
Option 2: Argon
Option 3: Krypton
Option 4: Radon
Correct Answer: Radon
Solution : The correct answer is Radon
Radon is a noble gas that is employed in cancer therapy. Radon has an atomic number of 86 and is a 6th period element. It is a radioactive noble gas with no aroma or flavour. Radon treatment is a sort
Question : The length of a train is 330 metres and it is moving at the speed of 72 km/hr. In how much time will it take to cross a platform of length 710 metres?
Option 1: 52 seconds
Option 2: 56 seconds
Option 3: 72 seconds
Option 4: 64 seconds
Correct Answer: 52 seconds
Solution : Given: The length of a train is 330 metres and it is moving at the speed of 72 km/hr. The platform's length = 710 metres. Distance = Speed × Time The total distance = Length of the train + Length of the platform =
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the following 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.) (8, 12, 6) (9, 18, 8)
Option 1: (4, 12, 6)
Option 2: (12, 24, 8)
Option 3: (7, 24, 4)
Option 4: (9, 10, 11)
Correct Answer: (12, 24, 8)
Solution : Given: (8, 12, 6); (9, 18, 8)
In the above-given sets, the pattern followed is as follows – (8, 12, 6)→8 × 6 = 48; 48 ÷ 4 = 12 (9, 18, 8)→9 × 8 = 72; 72 ÷ 4 = 18 Now,
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