Staff Selection Commission Combined Graduate Level Exam
Question : If objects appear enlarged and inverted in a rear-view mirror, then which type of mirror is used?
Option 1: Concave
Option 2: Convex
Option 3: Cylindrical
Option 4: Plane
Correct Answer: Concave
Solution : The correct answer is Concave.
A concave mirror is used when the object appears enlarged and inverted in a rear-view mirror. A concave mirror can form both types of images, diminished or enlarged, depending on the distance of the object from the mirror.
Question : Which of the following books has been written by Atiq Rahimi?
Option 1: Earth and Ashes
Option 2: This Savage Rite
Option 3: The Red Devil
Option 4: Witness the Night
Correct Answer: Earth and Ashes
Solution : The Correct Answer is Earth and Ashes
Atiq Rahimi has succeeded in condensing centuries of Afghan history into a brief tale of three very different generations. His reputation for writing war stories of immense drama and intimacy began with this, his first novel.
Question : In a quadrilateral ABCD, E is a point in the interior of the quadrilateral such that DE and CE are the bisectors of $\angle D$ and $\angle C$, respectively. If $\angle B=82^{\circ}$ and $\angle D E C=80^{\circ}$, then $\angle A=$ ?
Option 1: 75º
Option 2: 81º
Option 3: 84º
Option 4: 78º
Correct Answer: 78º
Solution : Concept used: The sum of all the internal angles of a quadrilateral is 360$^\circ$ The sum of all the internal angles of a triangle is 180$^\circ$ Calculations: In quadrilateral ABCD, $\angle$A + $\angle$B + $\angle$C + $\angle$D = 360$^\circ$ ⇒ $\angle$A + 82° + $\angle$C
Question : A container contains 25 litres of milk. From this container, 5 litres of milk is taken out and replaced by water. This process is further repeated two times. How much milk is there in the container now?
Option 1: 11.5 litres
Option 2: 14.8 litres
Option 3: 13.5 litres
Option 4: 12.8 litres
Correct Answer: 12.8 litres
Solution : Left quantity = Initial quantity(1 – [Fraction removed])N (Where N = Number of times the process is carried out) Fraction of milk removed = $\frac{5}{25}$ = $\frac{1}{5}$ Now, the quantity of milk left in the container $= 25(1 - \frac{1}{5})^3$ $= 25 ×
Question : Directions: The bar graphs represent the number of road accidents due to buses and cars during the years 2008 to 2013. Study the graph and answer the question.
The ratio of the averages of road accidents due to buses to that by cars in the years 2008, 2011 and 2013 is:
Option 1: $4:5$
Option 2: $5:4$
Option 3: $5:1$
Option 4: $1:4$
Correct Answer: $5:4$
Solution : As per the given graph: The average number of road accidents due to buses in the years 2008, 2011, and 2013= $\frac{30+60+10}{3}=\frac{100}{3}$ The average number of road accidents due to cars in the years 2008, 2011, and 2013 = $\frac{40+20+20}{3}=\frac{80}{3}$ The required ratio = $\frac{100}{3}$:$\frac{80}{3}$
Question : Select the correct direct form of the given sentence.
I asked him if it had never occurred to him that he was in the wrong profession.
Option 1: I said to him, “Has it never occurred to you that he was the wrong profession?”
Option 2: I said to him, “Does it never occur to you that you are in the wrong profession?”
Option 3: I said to him, “Have it never occurred to you that he is in the wrong profession?”
Option 4: I said to him, “Has it never occurred to you that you are in the wrong profession?”
Correct Answer: I said to him, “Has it never occurred to you that you are in the wrong profession?”
Solution : The correct choice is the fourth option.
Narration Conversion:
Question : Direction: In the given figure, which letter represents those Nurses who are the doctors as well as the pharmacists?
Option 1: R
Option 2: S
Option 3: P
Option 4: Q
Correct Answer: R
Solution : Nurses who are the doctors as well as the pharmacists is represented by the region common to square, circle, and triangle. The required region is shaded in the Venn diagram below –
So, the letter that represents those nurses who are the doctors as well
Question : Directions: In the following question, select the odd letter cluster from the given alternatives.
Option 1: CEAC
Option 2: FHDF
Option 3: PRMP
Option 4: TVRT
Correct Answer: PRMP
Solution : Let's check the options – First option: CEAC; C + 2 = E; E – 4 = A; A + 2 = C Second option: FHDF; F + 2 = H; H – 4 = D; D + 2 = F Third option: PRMP; P
Question : The third proportional to 12 and 18 is:
Option 1: 3
Option 2: 6
Option 3: 27
Option 4: 144
Correct Answer: 27
Solution : Let the third proportional be $x$. Then, $12:18=18:x$ ⇒ $\frac{12}{18}=\frac{18}{x}$ ⇒ $x=\frac{18×18}{12}=\frac{54}{2}=27$ Hence, the correct answer is 27.
Question : Directions: Which of the following diagrams represents the relationship among staff, manager, and worker?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Based on the general information, some managers can be workers or vice versa, and both managers and workers are staff. Anyone who works in an organisation, whether it is a worker or a manager, is a staff. So, their circles will be inside that of the
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