Staff Selection Commission Combined Graduate Level Exam
Question : Synthetic detergents are prepared from
Option 1: Potassium salts of higher fatty acids
Option 2: Sodium salts of higher fatty acids
Option 3: Hydrocarbons of petroleum
Option 4: Glycerides
Correct Answer: Hydrocarbons of petroleum
Solution : The correct answer is Hydrocarbons of Petroleum.
Synthetic detergents are commonly used for efficient cleaning in various applications, including laundry, dishwashing and home cleaning. They are made using petroleum-based chemicals, specifically Alkylbenzene sulphonates and Alkyl sulfate, which are obtained from crude oil and
Question : Which of the following number is divisible by 36?
Option 1: 8840
Option 2: 1542
Option 3: 96272
Option 4: 55512
Correct Answer: 55512
Solution : For a number to be divisible by 36, it must be divisible by 4 and 9. For divisibility by 9, the sum of digits should be divisible by 9. For divisibility by 4, the last two digits of the number should be divisible by 4.
Question : Directions: Select the option that is related to the fifth letter cluster in the same way as the second letter cluster is related to the first letter cluster and the fourth letter cluster is related to the third letter cluster. MGX : VPG :: TZC : CIL :: HPX : ?
Option 1: PXF
Option 2: QZG
Option 3: RZG
Option 4: QYG
Correct Answer: QYG
Solution : Given: MGX : VPG :: TZC : CIL :: HPX : ?
Here, add 9 to the place value of each letter of the given letter cluster to get its related letter cluster. MGX→M + 9 = V; G + 9 = P; X +
Question : Directions: In the following question, some parts of the sentence may have 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."
The book, being written (1) / in simple language, is suitable for children (2) / as it contains many good advices. (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 error is because of the use of "advices".
"Advice" is an uncountable noun, so it doesn't take a plural form. Here, "advice" should be replaced with "a lot of good advice".
Therefore, the correct
Question : Directions: In a certain code language, MOBILE is written as PRELOH, and SILENT is written as VLOHQW, how will PAINTING be written in that language?
Option 1: SDLQVKPI
Option 2: SDLQWLQJ
Option 3: RCKPWLQJ
Option 4: RCKPVKPI
Correct Answer: SDLQWLQJ
Solution : Given: MOBILE is written as PRELOH and SILENT is written as VLOHQW.
Add 3 to the place value of each letter of MOBILE, to get the required code – M + 3 = P; O + 3 = R; B + 3 = E; I
Question : Which of the following will satisfy $a^2 = b^2 + (ab)^2$ for the values $a$ and $b$?
Option 1: $a = \sin x \text{ and } b= \cot x$
Option 2: $a = \cos x \text{ and } b = \tan x$
Option 3: $a = \cot x \text{ and } b = \cos x$
Option 4: $a = \sin x \text{ and } b = \tan x$
Correct Answer: $a = \cot x \text{ and } b = \cos x$
Solution : Put $b=\cos x$ and $a=\cot x$ in $a^2 = b^2 + (ab)^2$ to verify the relation. $\cos^2 x + ( \cot x \cos x)^2$ $= \cos^2 x ( 1+ \cot^2 x)$ $= \cos^2 x ×
Question : Who profounded the theory of 'Economic Drain of India ' during British imperialism?
Option 1: W.C. Bannerji.
Option 2: Dadabhai Naroji .
Option 3: Gopal Krishna Gokhale .
Option 4: Gandhiji
Correct Answer: Dadabhai Naroji .
Solution : The correct option is - Dadabhai Naroji .
The Drain of Wealth theory was first put forth by Dadabhai Naoroji in 1867. Due to his six decades of involvement in the Indian national movement, he was known as the Grand Old Man of
Question : Select the INCORRECTLY spelt word.
Option 1: Laproscopy
Option 2: Generate
Option 3: Intermittent
Option 4: Guise
Correct Answer: Laproscopy
Solution : The correct choice is the first option.
The correct spelling of the medical term is laparoscopy. The misspelling is that there should be an "a" after "p", which makes it incorrect. The correct spelling refers to a surgical procedure that uses a laparoscope
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bold part of the sentence. In case no improvement is needed, select "No Improvement."
One day the hare began to make fun of the tortoise as it moved slowly.
(1) mock
(2) shout at
(3) No Improvement
(4) torture
Correct Answer: (1)
Solution : The sentence can be improved using the first option "mock".
"Mock" refers to imitating someone in a way that might be derisive and it is done with the intent to ridicule or criticise, whereas "make fun of" involves finding amusement at someone's expense, which may
Question : Directions: The distance between the two cities is 30 km. A man goes at a speed of 30 km per hour and returns at 20 km per hour. What is his average speed?
Option 1: 25 km/hr
Option 2: 24 km/hr
Option 3: 10 km/hr
Option 4: 26 km/hr
Correct Answer: 24 km/hr
Solution : Given: Distance to be travelled = 30km Speed A = 30km/hr, Speed B = 20km/hr
When the distance is constant, then the average speed = $\frac{2 × Speed A × Speed B}{Speed A + Speed B}$ = $\frac{2 × 30 × 20}{30 + 20}$
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