Staff Selection Commission Sub Inspector Exam
Question : Which of the following is an example of sublimation?
I. Dry ice
II. Camphor
III. Ice
Option 1: I and II
Option 2: I,II,and III
Option 3: Only I
Option 4: Only II
Correct Answer: I and II
Solution : The correct option is I and II
Sublimation is a change in which a substance transitions directly from a solid to a gaseous state, bypassing the intermediate liquid phase. It occurs when the prevailing temperature and pressure conditions allow the substance's vapour pressure
Question : Comprehension:
Read the given passage and answer the questions that follow.
On May 2, 2018, severe dust storms and thunderstorms hit parts of Rajasthan, Uttar Pradesh, and other adjoining regions. Explaining the reasons behind such severe weather systems, M. Mohapatra, a senior scientist with the India Meteorological Department (IMD), said that dust storms and thunderstorms are a result of nearly similar weather conditions, like intense heat. Areas that have moisture in the air experience thunderstorms, while those that don't have moisture experience dust storms. "All such conditions were being fulfilled on that day. The region had moist easterly winds coming from the Bay of Bengal, and there was a western disturbance system too. All this together triggered the events on May 2," he added.
In simple terms, a dust storm can be explained as a phenomenon that occurs when strong winds carry dust over an extensive area.
As far as the timing of their occurrence is concerned, Mohapatra stated that there is no deviation in the time of occurrence of a dust storm or thunderstorm activity, as they usually peak in the pre-monsoon period.
These events happen between March and May only. In the pre-monsoon period, temperatures are very high, around 44–45 degrees Celsius, and lead to such activities.
Even though dust storms and thunderstorms are a common feature every year, there has been no focused work on studying the trends related to them. "In the coming years, there could be more instances of intense thunderstorms and sand storms, but they have to be studied in detail, looking at the data from over 30 to 40 years to notice a trend. Work has been more or less confined to cyclones and monsoon systems, but not much on dust storms or thunderstorms. It needs study," admitted Mohapatra.
The extent of damage caused by thunderstorm activity in India can be gauged from the data of India's National Crime Records Bureau (NCRB). As per the NCRB data, compared to other natural disasters like cyclones, floods, or heat waves, lightning kills more people in India. For instance, at least 25 percent of the 10,510 accidental deaths attributable to forces of nature in 2015 were due to lightning. The number of deaths due to lightning has constantly remained over 2,000 every year since 2005.
Question:
A dust storm mainly occurs due to:
Option 1: moisture in the air
Option 2: easterly wind
Option 3: intense heat
Option 4: extreme cold
Correct Answer: intense heat
Solution : The third option is the correct choice (refer to the first paragraph).
As explained by M. Mohapatra in the passage, both dust storms and thunderstorms are a result of nearly similar weather conditions, particularly intense heat. He mentions that areas experiencing intense heat without
Question : Select the INCORRECTLY spelt word
Option 1: Legitimate
Option 2: Exagerate
Option 3: Propagate
Option 4: Promulgate
Correct Answer: Exagerate
Solution : The correct answer is the second option.
The incorrectly spelled word is exagerate. The correct spelling is exaggerate, which means to represent something as being larger, greater, better, or worse than it is. It involves overstatement or embellishment.
The meanings of the other options are
Question : The credit for discovering the sea route of India goes to the:
Option 1: French
Option 2: Dutch
Option 3: Portuguese
Option 4: English
Correct Answer: Portuguese
Solution : The correct answer is Portuguese.
Vasco da Gama, a Portuguese sailor, discovered a sea route to India in 1498 CE. Initially, trade with India was conducted by a land route from the northwest. However, due to the Turkish Empire's political problems, the land route
Question : The following table shows the data of different colleges whose students participated in the Olympiad.
What is the percentage increase in the number of students who participated in the GK Olympiad to those who participated in the Science Olympiad from all colleges? (Correct to two decimals places.)
Option 1: 29.37%
Option 2: 29.89%
Option 3: 29.74%
Option 4: 29.01%
Correct Answer: 29.37%
Solution : Students participated in GK Olympiad = 182 + 200 + 120 + 130 + 183 = 815 Students participated in Science Olympiad = 100 + 100 + 150 + 200 + 80 = 630 Difference = 815 – 630 = 185 $\therefore$ Required percentage =
Question : Directions: In a certain code language, G is written as S, L as A, A as O, O as N, N as E, E as G, H as L, and S as H. How will HALOGENS be written in that code?
Option 1: LNAOSGEH
Option 2: LOANSGEH
Option 3: HOANSGEL
Option 4: HOENSGAH
Correct Answer: LOANSGEH
Solution : Here, as per the given instructions – G represents S; L represents A; A represents O; O represents N; N represents E; E represents G; H represents L; S represents H.
Therefore, HALOGENS is represented as LOANSGEH. Hence, the second option is correct.
Question : Select the option that can be used as a one-word substitute for the given group of words.
A collection of historical documents or records providing information about a place, institution, or group of people
Option 1: Museum
Option 2: Apostate
Option 3: Asylum
Option 4: Archive
Correct Answer: Archive
Solution : The fourth option is the correct answer.
Archive is a collection of historical documents or records, often in the form of manuscripts, letters, or other materials, providing information about a place, institution, or group of people.
The meanings of other options are as follows:
Question : Who among the following Indian authors has written the autobiography titled "My Story"?
Option 1: Arundhati Roy
Option 2: Shobha Dey
Option 3: Kiran Desai
Option 4: Kamala Das
Correct Answer: Kamala Das
Solution : The correct option is Kamala Das.
The Indian author who wrote the autobiography titled "My Story" is Kamala Das. "My Story" is her candid and controversial autobiography that was published in 1976. It is a candid account of Kamala Das's life, covering various
Question : During the occurrence of thunder and lightning:
Option 1: thunder is heard before lightning is seen
Option 2: lightning is seen at the same time as thunder is heard
Option 3: whether lightning is seen first or thunder is heard first will depend upon the distance and angle of the clouds vis-a-vis Earth
Option 4: lightning is seen before thunder is heard
Correct Answer: lightning is seen before thunder is heard
Solution : The correct option is lightning is seen before thunder is heard.
Light travels very quickly, thus when lightning strikes, one can see the dazzling flash of light practically instantly. Thunder, on the other hand, takes a while to
Question : If $x+\frac{1}{x}=-2$, then the value of $x^p +x^q$ is: (where $p$ is an even number and $q$ is an odd number)
Option 1: –2
Option 2: 2
Option 3: 1
Option 4: 0
Correct Answer: 0
Solution : Given: $x+\frac{1}{x}=-2$ $x^2 + 1 = -2x$ ⇒ $x^2 + 2x + 1 = 0$ ⇒ $(x+1)^2 = 0$ ⇒ $x = -1$ Given expression, $x^p + x^q$, where p is even and q is odd, $(-1)^{even} = 1$ and $(-1)^{odd} = -1$ $\therefore$ The
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