Staff Selection Commission Combined Graduate Level Exam
Question : Find the fourth proportional to the numbers 17, 272, and 19.
Option 1: 332
Option 2: 323
Option 3: 403
Option 4: 304
Correct Answer: 304
Solution : Fourth proportional to the numbers 17, 272 and 19 = $\frac{272×19}{17}$ = 304 Hence, the correct answer is 304.
Question : Direction: In the following question, select the related number from the given alternatives.
49 : 56 :: 36 : ?
Option 1: 52
Option 2: 44
Option 3: 42
Option 4: 43
Correct Answer: 42
Solution : Given: 49 : 56 :: 36 : ?
Here,
7x7= 49
7x8= 56
Similarly, 6x6= 36
6x7= 42
Hence, third option is correct.
Question : If $x^{2}-3x+1=0$, then the value of ($x + \frac{1}{x}$) is:
Option 1: 1
Option 2: 0
Option 3: 3
Option 4: 2
Correct Answer: 3
Solution : Given: $x^{2}-3x+1=0$ ⇒ $x^{2}+1=3x$ ⇒ $\frac{x^{2} +1}{x}= 3$ (dividing both sides by $x$) $\therefore x + \frac{1}{x} = 3$ Hence, the correct answer is 3.
Question : If the profit from selling an article for Rs. 425 is the same as the loss from selling it for Rs. 355, then the cost price of the article is:
Option 1: Rs. 410
Option 2: Rs. 380
Option 3: Rs. 400
Option 4: Rs. 390
Correct Answer: Rs. 390
Solution : Let the cost price of the article be Rs. x. According to the given information, Profit = loss ⇒ 425 – x = x – 355 ⇒ x + x = 425 + 355 ⇒ 2x = 780 $\therefore$ x = 390 Hence, the
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. The air has become very dirty in (1)______ parts of the world. This is of course (2)______ to your health. Experts say many people die (3)______ it each year. There is a new study on (4)______ pollution which comes from the experts of the World Health Organization (WHO) (5)______ is an agency of the United Nations. If you (6)______ unhealthy air for a long period of time, you could (7)______ sick. Air pollution has been linked to many diseases (8)______stroke and cancer. The WHO says that seven million (9)______ die each year as a result of the (10)______ air. Question: Select the most appropriate option to fill in the blank no. 3.
Option 1: through
Option 2: by
Option 3: from
Option 4: with
Correct Answer: from
Solution : The right choice is the third option.
Explanation: In the sentence, the word from is a preposition that establishes a relationship between the action (die) and its cause (it). So, grammatically, "from" connects the verb to the source or
Question : Which of the following coals contains ninety per cent carbon?
Option 1: Anthracite
Option 2: Bitumen
Option 3: Lignite
Option 4: Peat
Correct Answer: Anthracite
Solution : The correct answer is Anthracite.
Question : Saving is that portion of money income that is
Option 1: spent for the development of industries
Option 2: not spent on consumption
Option 3: spent on health and education
Option 4: spent for consumer durables
Correct Answer: not spent on consumption
Solution : The correct answer is not spent on consumption.
Saving is defined as the share of income that is not spent on current consumption. It refers to the quantity of money set aside for future usage. Savings can be used for several
Question : Directions: Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series. DY_GMI_ _YTG _ ILDYT _ MILD _ TGM _ L
Option 1: TLDGMIY
Option 2: TDLGMYI
Option 3: TLDMGYI
Option 4: TLDYMIG
Correct Answer: TLDMGYI
Solution : Given: DY_GMI_ _YTG _ ILDYT _ MILD _ TGM _ L
To fill the series we have to divide the series – DY _ GMI _ / _ YTG _ IL / DYT _ MIL / D _ TGM _ L
Let's check each option
Question : Directions: Select the related letter cluster from the given alternatives. APPARENT : RENTAPPA :: MUSCULAR : ?
Option 1: ULAMMUSC
Option 2: ULARMUSC
Option 3: UMAMLUSC
Option 4: ULARMUCS
Correct Answer: ULARMUSC
Solution : Given: APPARENT : RENTAPPA :: MUSCULAR : ?
Consider the first four letters of APPARENT (APPA) as a single group and the next four letters (RENT) as a single group. Now, on interchanging the places of these two groups, (RENT) will come first and (APPA)
Question : The morphology of chromosomes can be best studied at
Option 1: interphase
Option 2: prophase
Option 3: metaphase
Option 4: zygotene
Correct Answer: metaphase
Solution : The correct option is metaphase.
The morphology of chromosomes is best studied during metaphase during cell division because the chromosomes are most compacted, and visible under a microscope at that time. Metaphase is a stage of mitosis (cell division) in which the chromosomes align along
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