Staff Selection Commission Sub Inspector Exam
Question : Directions: Six students are sitting around a circular table facing the centre. A is an immediate neighbour of D and E. C is an immediate neighbour of D and F. F is an immediate neighbour of C and B. Who is the immediate neighbour of both A and B?
Option 1: F
Option 2: D
Option 3: E
Option 4: C
Correct Answer: E
Solution : Given: 1. A is an immediate neighbour of D and E. 2. C is an immediate neighbour of D and F. 3. F is an immediate neighbour of C and B.
From the above-given information, the following seating arrangement can be drawn –
From the
Question : Directions: In this question, a part of the sentence is in bold. Below are given alternatives to the bold part at 1, 2 and 3 which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is 4.
The most important aspect for life is to be humble.
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 2
Solution : The correct option is the second option.
Explanation:
It correctly conveys the idea that the sentence is discussing a particular part or feature of life, which is being humble. Aspect is the appropriate word to use here and is followed by the preposition "of" in
Question : Comprehension: Read the given passage and answer the questions that follow.
Key factors influencing subway air pollution will include station depth, date of construction, type of ventilation (natural/air conditioning), types of brakes (electromagnetic or conventional brake pads) and wheels (rubber or steel) used on the trains, train frequency and more recently the presence or absence of platform screen-door systems. In particular, much subway particulate matter is sourced from moving train parts such as wheels and brake pads, as well as from the steel rails and power-supply materials, making the particles dominantly iron-containing. To date, there is no clear epidemiological indication of abnormal health effects on underground workers and commuters. New York subway workers have been exposed to such air without significant observed impacts on their health, and no increased risk of lung cancer was found among subway train drivers in the Stockholm subway system. But a note of caution is struck by the observations of scholars who found that employees working on the platforms of Stockholm underground, where PM concentrations were greatest, tended to have higher levels of risk markers for cardiovascular disease than ticket sellers and train drivers. The dominantly ferrous particles are mixed with particles from a range of other sources, including rock ballast from the track, biological aerosols such as bacteria and viruses, and air from the outdoors, and driven through the tunnel system on turbulent air currents generated by the trains themselves and ventilation systems.
Question
What is the passage about?
Option 1: Metro life and the subway facilities
Option 2: The benefits of subway life
Option 3: The risky life in the subways
Option 4: Pollution created by the railroad
Correct Answer: The risky life in the subways
Solution : The correct option is the third option.
Explanation: The passage primarily discusses the potential health risks associated with subway air pollution. It highlights factors influencing subway air quality and mentions the absence of clear health effects among workers and commuters,
Question : Select the most appropriate option that can substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’. Harry is the one sitting on the corner.
Option 1: No substitution required
Option 2: upon
Option 3: onto
Option 4: in
Correct Answer: in
Solution : The fourth option is the correct answer.
The preposition "in" is used to indicate location or position, making the sentence grammatically correct by specifying where Harry is sitting (on the corner).
Therefore, the correct sentence should be: Harry is the one sitting in the corner.
Question : Which of the following are valid phases of a computer virus?
Option 1: Only Triggering, Executing
Option 2: Only Propagation, Executing
Option 3: Only Dormant, Propagation, Triggering, Executing
Option 4: Only Dormant, Propagation, Triggering
Correct Answer: Only Dormant, Propagation, Triggering, Executing
Solution : The correct answer is Only Dormant, Propagation, Triggering, Executing.
A computer virus has four legitimate phases: dormancy, propagation, triggering, and executing. The virus is dormant and waits for an event to activate it. During the propagation phase, the virus replicates
Question : A solid cylinder having a radius of the base of 7 cm and a length of 20 cm is directed from its height to get two identical cylinders. What will be the percentage increase in the total surface area?
Option 1: 29.78
Option 2: 25.93
Option 3: 27.62
Option 4: 32.83
Correct Answer: 25.93
Solution : Given: radius of original cylinder = 7 cm Height of cylinder = 20 cm Let radius and height of smaller cylinder be $r$ and $\frac{h}{2}$ Surface Area of old cylinder = $2\pi r^2 + 2\pi rh = 2\pi r(r + h)$ Combined Surface area of
Question : Directions: Six characters A, B, C, 1, 2, and 3 are written on different faces of a dice. Two positions of this dice are shown in the figure. Find the character on the face opposite to 3.
Option 1: B
Option 2: 1
Option 3: 2
Correct Answer: 1
Solution : Taking dice positions 1 and 2 with A as the common face.
Moving clockwise from the common face with A –
So, the opposite pairs are –
Therefore, the opposite face of the 3 is 1. Hence, the second option is correct.
Question : Which of the following is not a tributary of the Krishna River?
Option 1: Koyna
Option 2: Veena
Option 3: Ghataprabha
Option 4: Panchganga
Correct Answer: Veena
Solution : The correct answer is Veena.
The Krishna River rises near Mahabaleshwar, Maharashtra, and flows eastward. It originates in Telangana, Andhra Pradesh, Karnataka, and Maharashtra. The Krishna River has four left-bank tributaries: Bhima, Dindi, Paleru, and Musi.
On the other hand, Koyana, Panchganga, Dudhganga, Malaprabha,
Question : The red blood cells in a blood sample grow by 10% per hour in the first two hours, decrease by 10% in the next one hour, remain constant in the next one hour and again increase by 5% per hour in the next two hours. If the original count of the red blood cells in the sample is 40000, find the approximate red blood cell count at the end of 6 hours.
Option 1: 40,000
Option 2: 45,025
Option 3: 48,025
Option 4: 50,025
Correct Answer: 48,025
Solution : The initial count of RBCs = 40,000 As we know, $x$ becomes $\frac{x(100+y)}{100}$ after increase of $y$% and $x$ becomes $\frac{x(100-y)}{100}$ after decrease of $y$%. According to the question, RBC count after 6 hours $= 40000 ×\frac{(100+10)}{100}×\frac{(100+10)}{100}×\frac{(100-10)}{100}×\frac{(100+5)}{100}×\frac{(100+5)}{100}$ $\therefore$ Approximate red blood cells count after 6
Question : Directions: Which answer figure will complete the pattern in the question figure?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : On comparing the question figure and all the answer figures, the following figure will combine and make the complete pattern –
Hence, the third option is correct.
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