Staff Selection Commission Sub Inspector Exam
Question : If in any water body, there is a high BOD value then it is generally _____.
Option 1: very clean
Option 2: very polluted
Option 3: highly productive
Option 4: highly unproductive
Correct Answer: very polluted
Solution : The correct option is very polluted.
Biochemical Oxygen Demand (BOD) is an important water quality measurement that reflects the extent of organic pollution in bodies of water by measuring the quantity of oxygen used by microbes in reducing organic materials, hence assisting in the
Question : Directions: A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in the two matrices, given below. The columns and rows of Matrix (I) are numbered from 0 to 4 and that of Matrix (II) are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g. A can be represented by 40, 01, 13, 32, etc, and N can be represented by 56, 68, 89, etc. Similarly, you have to identify the set for the word given below: SIX-KIDS Matrix I
Matrix II
Option 1: 86, 87, 99 - 40, 41, 86, 64
Option 2: 98, 96, 85 - 42, 78, 88, 77
Option 3: 77, 69, 76 - 22, 95, 28, 31
Option 4: 65, 55, 67 - 05, 25, 91, 40
Correct Answer: 98, 96, 85 - 42, 78, 88, 77
Solution : Given: SIX - KIDS
Number representations of each letter – S→98, 86, 77, 65, 59 I→96, 87, 78, 69, 55 X→99, 85, 76, 67, 58 K→42, 31, 23, 10, 04, I→96, 87, 78, 69, 55 D→95, 88, 79,
Question : The instrument used to study the laws of vibrating string is:
Option 1: hydrometer
Option 2: sonometer
Option 3: sphygmomanometer
Option 4: electrometer
Correct Answer: sonometer
Solution : The correct option is a sonometer.
A sonometer is a device that is used to investigate the properties and characteristics of vibrating strings. It is made up of a hollow wooden box or frame with one or more strings firmly stretched across it. Sonometers
Question : Rocks that are formed by the cooling of magma are called:
Option 1: Sedimentary rocks
Option 2: Igneous rocks
Option 3: Metamorphic rocks
Option 4: Rock salts
Correct Answer: Igneous rocks
Solution : The correct answer is Igneous rocks
Igneous rocks are those that originate from molten rock material that solidifies. These can be divided into two categories: extrusive and intrusive igneous rocks. Intrusive igneous rocks are those formed when magma cools down inside the crust of
Question : 30° Celsius =_________Kelvin (approximately)
Option 1: -243
Option 2: 303
Option 3: 130
Option 4: -30
Correct Answer: 303
Solution : The correct option is 303.
To convert Celsius to Kelvin, the following formulae are required:
Kelvin = Celsius + 273.15
So, for 30 degrees Celsius:
Kelvin = 30 + 273.15 = 303.15 Kelvin
Therefore, 30 degrees Celsius is 303.15 Kelvin, which is approx 303.
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".
Looking forward (1) / to meeting you (2) / in person. (3) / No error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The error lies in the first part of the sentence.
The subject is missing in this sentence. Looking forward to should be replaced with I am looking forward to as the subject (I) should come before the phrasal verb (looking forward), which makes the
Question : Direction: In the following question, a sentence is given with a blank to be filled in with the appropriate words. Four alternatives are suggested for each question. Choose the correct alternative out of the four as your answer.
The recent _________ in the size of the army is alarming.
Option 1: built-up
Option 2: built-in
Option 3: build-up
Option 4: build-on
Correct Answer: build-up
Solution : The correct choice is the third option.
Explanation:
It is a noun that refers to the gradual increase of something, such as a build-up of troops or forces. In the sentence, it conveys the idea that there has been an alarming increase in the
Question : Which of the following substances is used as a substitute for chlorine in bleaching?
Option 1: Ethanal
Option 2: Liquid carbon dioxide
Option 3: Hydrogen peroxide
Option 4: Tetrachloroethene
Correct Answer: Hydrogen peroxide
Solution : The correct answer is Hydrogen peroxide.
Hydrogen peroxide is used as a substitute for chlorine in bleaching. Due to its oxidising property, it oxidises the thiol companies of enzymes and proteins inflicting metabolic inhibition on microbes.
Question : Select the most appropriate SYNONYM of the given word.
Cornucopia
Option 1: Sink hole
Option 2: Treasure trove
Option 3: Malaise
Option 4: Avarice
Correct Answer: Treasure trove
Solution : The second option is correct.
Explanation: The word cornucopia is a noun that originates from the Latin words cornu (horn) and copia (abundance). It is often used metaphorically to represent a symbol of plenty or an abundant supply of good things. In the given
Question : Lal Bahadur Shastri was born on ______.
Option 1: 12 October 1904
Option 2: 2 October 1896
Option 3: 2 October 1904
Option 4: 12 October 1869
Correct Answer: 2 October 1904
Solution : The correct option is 2 October 1904
Lal Bahadur Shastri was born on October 2, 1904. He was born in Mughalsarai, a town in present-day Uttar Pradesh. He was an Indian politician who played a crucial role in the country's struggle for independence
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