Staff Selection Commission Combined Graduate Level Exam
Question : Rubi goes to a multiplex at a speed of 3 km/h to see a movie and reaches 5 minutes late. If she travels at the speed of 4 km/h she reaches 5 minutes early, then the distance of the multiplex from her starting point is:
Option 1: 2 km
Option 2: 5 km
Option 3: 2 metres
Option 4: 5 metres
Correct Answer: 2 km
Solution : Let the distance be $x$ km. According to the question, Speed = $\frac{\text{Distance}}{\text {Time}}$ $\frac{x}{3}–\frac{x}{4}=\frac{5+5}{60}$ ⇒ $x=2$ Hence, the correct answer is 2 km.
Question : The bar graph given below shows the percentage distribution of the total production of six different types of cars by a car manufacturing company over 2 years. If 75% of the T-type cars produced each year were sold by the company, how many T-type cars remain unsold?
Option 1: 23500
Option 2: 22000
Option 3: 24125
Option 4: 25000
Correct Answer: 24125
Solution : According to the question, 75% of the T-type cars are sold. Now, if 75% of the T-type cars produced each year were sold by the company, the number of T-type cars remain unsold = 350000 $\times$ (90 – 75)% $\times$ (100 – 75)% $+$ 440000
Question : The climatic zones are classified on the basis of
Option 1: distance from equator
Option 2: elevation
Option 3: rainfall
Option 4: distance from the sea
Correct Answer: rainfall
Solution : The correct option is - rainfall
The maximum and minimum temperatures, temperature range, total and seasonal distribution of precipitation, and other factors are used to classify the climatic zones. The most well-known classification scheme was initially created by Wladimir Koppen based on these parameters.
Question : If, $\frac{r}{13}+\frac{13}{r}=1$, then the value of $r^3$ is:
Option 1: –2157
Option 2: 2197
Option 3: 2157
Option 4: –2197
Correct Answer: –2197
Solution : $\frac{r}{13}+\frac{13}{r}=1$ We know that if $x+\frac{1}{x} = 1$, then $x^3 = -1$ Let $\frac{r}{13} = x$ The equation becomes, $x+\frac{1}{x} = 1$ ⇒ $x^2-x+1=0$ $x^3+1^3=(x+1) (x^2-x+1)$ ⇒ $x^3+1^3 =0$ ⇒ $x^3 = -1$ ⇒ $(\frac{r}{13})^3 = -1$ ⇒ $r^3 = -2197$ Hence, the correct answer
Question : Muddy water is treated with alum in purification process, it is same as
Option 1: Emulsification
Option 2: Absorbtion
Option 3: Adsorbtion
Option 4: Coagulation
Correct Answer: Coagulation
Solution : The correct answer is coagulation.
When the suspended particles in any liquid solution form a precipitate and settle down, then this process is known as coagulation. The most common example of it is coagulation of blood which forms a blood clot and stops bleeding. Similarly
Question : Directions: Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 45 : 15 :: 20 : 10 :: 125 : ?
Option 1: 20
Option 2: 25
Option 3: 28
Option 4: 24
Correct Answer: 25
Solution : Given: 45 : 15 :: 20 : 10 :: 125 : ?
Like, 45 : 15→(45 × 5) = 225; √225 = 15 20 : 10→(20 × 5) = 100; √100 = 10 Similarly, follow the same pattern for 125 : ?→(125 × 5) =
Question : Directions: Select the correct mirror image of the given combination when the mirror is placed at line MN as shown.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. So, according to the above property and the information provided, the mirror is placed on the right side of the figure (on line MN). So, the left side of the
Question : The distance between two places A and B is 60 km. Two cars start at the same time from A and B, travelling at speeds of 35 km/h and 25 km/h, respectively. If the cars run in the same direction, then they will meet after how many hours?
Option 1: 6.5
Option 2: 6.2
Option 3: 6
Option 4: 6.52
Correct Answer: 6
Solution : The car runs in the same direction. So, the relative speed is (35 – 25) = 10 km/h. Use the formula, $\text{Time}=\frac{\text{Distance}}{\text{speed}}$ to find the required time that two cars take to meet. ${\text{Time}}=\frac{60}{10}=6$ hours Hence, the correct answer is 6 hours.
Question : Comprehension:
Read the passage and answer the questions that follow.
The Roman Empire covered a vast stretch of territory that included most of Europe as we know it today and a large part of the Fertile Crescent and North Africa. The Roman Empire embraced a wealth of local cultures and languages; women had a stronger legal position then than they do in many countries today; but also that much of the economy was run on slave labor, denying freedom to substantial numbers of persons. From the fifth century onwards, the empire fell apart in the west but remained intact and exceptionally prosperous in its eastern half. Roman historians have a rich collection of sources to go on, which we can broadly divide into three groups: (a) texts, (b) documents and (c) material remains. Textual sources include letters, speeches, sermons, laws, and histories of the period written by contemporaries. These were usually called ‘Annals’ because the narrative was constructed on a year-by-year basis. Documentary sources include mainly inscriptions and papyri. Inscriptions were usually cut on stone, so a large number survived, in both Greek and Latin. The ‘papyrus’ was a reed-like plant that grew along the banks of the Nile in Egypt and was processed to produce sheets of writing material that was very widely used in everyday life. Thousands of contracts, accounts, letters, and official documents survive ‘on papyrus’ and have been published by scholars who are called ‘papyrologists’. Material remains include a very wide assortment of items that mainly archaeologists discover (for example, through excavation and field survey), for example, buildings, monuments and other kinds of structures, pottery, coins, mosaics, and even entire landscapes. Each of these sources can only tell us just so much about the past, and combining them can be a fruitful exercise, but how well this is done depends on the historian’s skill!
Question:
Documentary sources of the history of the Roman Empire include:
Option 1: inscriptions
Option 2: pottery
Option 3: sermons
Option 4: landscapes
Correct Answer: inscriptions
Solution : The first option is correct.
Question : Directions: In the following question, some parts of the sentence may have some errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No Error".
According to scientists (1) /, there are a lot of (2) / answers about it. (3) / No Error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The error lies in the third part of the sentence.
The preposition "to" is needed after "answers" to correctly convey the idea that there are many answers related to the topic. The preposition "about" doesn't convey the intended meaning of the sentence. In this context,
The Question containing Inaapropriate or Abusive Words
Question lacks the basic details making it difficult to answer
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