Staff Selection Commission Combined Higher Secondary Level Exam
Question : The correct order of electron affinity of Halogens is –
Option 1: F < I < Br < Cl
Option 2: I < Br < Cl < F
Option 3: I < Br < F < Cl
Option 4: I > Br > F > Cl
Correct Answer: I < Br < F < Cl
Solution : The correct option is I < Br < F < Cl.
The electron affinity of an element is the energy change that occurs when an electron is added to a neutral atom to form a negative ion. Generally,
Question : The following bar graph shows the marks of a student from 5 different subjects in 2015 and 2016. Total marks scored in History for 2016 is what percent of the total marks of Civics for both years?
Option 1: 55%
Option 2: 40%
Option 3: 50%
Option 4: 60%
Correct Answer: 40%
Solution : Total marks scored in History in 2016 = 40 Total marks of Civics for both years = 40 + 60 = 100 Percentage of total marks scored in History for 2016 to the total marks of Civics for both years = $\frac{40}{100} × 100 =
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. Five centuries after Leonardo da Vinci painted the Mona Lisa (1503–19), the portrait hangs behind the bulletproof glass (1)_______ in the Louvre Museum and draws thousands of jostling spectators each day. It is the most famous painting in the world, and yet, when viewers manage to see the artwork up close, they are likely to be (2)________ by the small, subdued portrait of an ordinary woman. She’s dressed modestly in a translucent veil, dark robes, and no jewellery. Much has been said about her smile and gaze, but viewers still might wonder what all the (3)_____ is about. Along with the mysteries of the sitter’s identity and her (4)________ look, the reason for the work’s popularity is one of its many conundrums. Although many theories have attempted to pinpoint one reason for the art piece’s celebrity, the most compelling arguments insist that there is no one explanation. The Mona Lisa’s fame is the result of many chance circumstances combined with the painting’s (5)_______ appeal. Question: Select the most appropriate option to fill in the blank number 4.
Option 1: dark
Option 2: occult
Option 3: enigmatic
Option 4: murky
Correct Answer: enigmatic
Solution : The third option is the correct choice.
Enigmatic suggests a depth of meaning and a sense of intentional mystery, describing the mysterious and puzzling look of the Mona Lisa. It conveys the sense of complexity and mystery surrounding the expression of the woman in the
Question : The average weight of 100 students is 34 kg. The average weight of the first 49 students is 34 kg and of the last 50 students is 32 kg. What is the weight of the 50th student?
Option 1: 138 kg
Option 2: 134 kg
Option 3: 130 kg
Option 4: 136 kg
Correct Answer: 134 kg
Solution : The average weight of 100 students = 34 kg $\therefore$ Total weight of 100 students = 100 × 34 = 3400 kg The average weight of first 49 students = 34 kg $\therefore$ Total weight of first 49 students = 34 × 49 =
Question : If $a^2+b^2+c^2=62$ and $a + b + c = 12$, then what is the value of $4ab + 4bc + 4ca$?
Option 1: 164
Option 2: 148
Option 3: 152
Option 4: 160
Correct Answer: 164
Solution : We can solve this problem using the identity, $(a+b+c)^2 = a^2 + b^2 + c^2 + 2(ab + bc + ca)$ Given that $a^2 + b^2 + c^2 = 62$ and $a + b + c = 12$, $⇒12^2 = 62 + 2(ab + bc
Question : Simplify the given expression $\frac{(x+3)^3+(x-3)^3}{x^2+27}$.
Option 1: $3x$
Option 2: $x$
Option 3: $4x$
Option 4: $2x$
Correct Answer: $2x$
Solution : Consider $\frac{(x+3)^3+(x-3)^3}{x^2+27}$ = $\frac{x^3+3^3+3\times x\times 3(x+3)+x^3-3^3-3\times x\times 3(x-3)}{}$ = $\frac{2x^3+9x(x+3)-9x(x-3)}{x^2+27}$ = $\frac{2x^3+9x^2+27x-9x^2+27x}{x^2+27}$ = $\frac{2x^3+2\times 27x}{x^2+27}$ = $\frac{2x(x^2+27)}{x^2+27}$ = $2x$ Hence, the correct answer is $2x$.
Question : Select the most appropriate idiom for the following statement: We should be together to fight any danger. Otherwise, separately, we won't be able to fight.
Option 1: Nothing ventured, nothing gained.
Option 2: A full purse makes the mouth speak.
Option 3: United we stand, divided we fall.
Option 4: Well begun is half done.
Correct Answer: United we stand, divided we fall.
Solution : The correct idiom for this statement is: United we stand, divided we fall.
Explanation: This is the most appropriate idiom, as it emphasises the idea that unity is strength and that being together is crucial, especially in the face of
Question : Directions: Four number pairs have been given, out of which three are alike in some manner and one is different. Select a different one.
Option 1: 17 – 54
Option 2: 19 – 60
Option 3: 15 – 48
Option 4: 14 – 42
Correct Answer: 14 – 42
Solution : Let's check each option – First option: 17 – 54; (17 × 3) + 3 = 54 Second option: 19 – 60; (19 × 3) + 3 = 60 Third option: 15 – 48; (15 × 3) + 3 = 48 Fourth option:
Question : The sum of money which when given on compound interest at 18% per annum would fetch Rs. 960 more when the interest is payable half yearly than when it was payable annually for 2 years is:
Option 1: Rs. 60,000
Option 2: Rs. 30,000
Option 3: Rs. 40,000
Option 4: Rs. 50,000
Correct Answer: Rs. 50,000
Solution : Given: Rate of interest = 18% and Time = 2 year Also, Amount after Compound Interest calculated half-yearly – Amount after Compound Interest calculated yearly = Rs. 960 Now, when the interest is payable half-yearly, Rate of interest = 9% and Time period =
Question : Directions: Which answer figure will complete the pattern in the question figure?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : 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.
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