Staff Selection Commission Sub Inspector Exam
Question : Which of the following principles is used to produce 'low temperatures'?
Option 1: Superconductivity
Option 2: Joule-Kelvin effect
Option 3: Thermo-electric effect
Option 4: Adiabatic demagnetisation
Correct Answer: Adiabatic demagnetisation
Solution : The correct option is Adiabatic demagnetisation.
To achieve low temperatures, an adiabatic demagnetisation method is helpful. This technique helps to achieve low temperatures of around 1K for the electronic paramagnetic salts. However, the temperature can be as low as possible for the nuclear
Question : Directions: The sequence of folding a piece of paper and the manner in which the folded paper has been cut is shown below. Choose the figure that would most closely resemble the unfolded form of the paper.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given folded paper is unfolded, it will look like this –
Hence, the second option is correct.
Question : What is the length of a bacterial cell?
Option 1: 3 to 5 µm
Option 2: 1 to 40 µm
Option 3: 30 to 50 µm
Option 4: 0 to 3 µm
Correct Answer: 3 to 5 µm
Solution : The correct option is 3 to 5 µm.
The average length of bacterial cells falls within the range of 3 to 5 micrometres (µm). This range is a generalisation, and the actual size can vary depending on the bacterial species. Some
Question : Study the given table and answer the question that follows. The table shows the number of students in various courses in various cities A, B, C, D and E in India during the academic year 2022-2023.
During the academic year 2022-2023, which city had the largest number of students?
Option 1: C
Option 2: D
Option 3: A
Option 4: B
Correct Answer: B
Solution : From the given table, City B has the maximum number of students = 11000 Hence, the correct answer is B.
Question : Directions: Select the option that arranges the following words in a logical and meaningful way. 1. Mansion 2. Cottage 3. Palace 4. Cabin 5. Villa
Option 1: 2–4–1–5–3
Option 2: 2–1–3–4–5
Option 3: 4–2–5–1–3
Option 4: 3–1–2–4–5
Correct Answer: 4–2–5–1–3
Solution : Given: 1. Mansion 2. Cottage 3. Palace 4. Cabin 5. Villa
According to the options arranging the given words in the increasing order of the space – At the first position, we will arrange a cabin as the area covered by a cabin is the
Question : Uric acid is the chief nitrogenous waste of which of the following?
Option 1: Humans
Option 2: Frogs
Option 3: Fishes
Option 4: Birds
Correct Answer: Birds
Solution : The correct option is Birds
Uric acid is the principal nitrogenous waste product in birds. Birds have evolved a unique method of excreting nitrogenous waste that aids in water conservation, which is critical for their survival in arid areas. Uric acid is a chemical compound
Question : The given pie chart shows the percentage distribution of 450 employees in an organisation. Read the pie chart and answer the question that follows. What is the number of employees working in department F?
Option 1: 36
Option 2: 72
Option 3: 99
Option 4: 63
Correct Answer: 99
Solution : Total number of employees = 450 Number of employees in department F = 22% of 450 = Required number = $\frac{(22 × 450)}{100}$ = 99 $\therefore$ Number of employees in department F is 99. Hence, the correct answer is 99.
Question : Select the most appropriate meaning of the given idiom.
Walking on thin ice
Option 1: performing a ballet
Option 2: doing something risky
Option 3: walking carefully
Option 4: slipping on ice
Correct Answer: doing something risky
Solution : The correct answer is the second option.
Explanation: The idiom walking on thin ice is a figurative expression that conveys the idea of engaging in a risky or precarious situation where the outcome is uncertain and potentially dangerous. It is not a
Question : The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer. Psychology has been / defined the scientific study of / human psyche and behaviour.
Option 1: defined the scientific study of
Option 2: Psychology has been
Option 3: human psyche and behaviour
Option 4: No error
Correct Answer: defined the scientific study of
Solution : The first option is correct.
The error is in the second part of the sentence. The word defined should not be followed by the scientific study of. Instead, it should be followed by as, making the correct phrase defined
Question : Which of the following statements is correct?
Option 1: Atomic radius increases across a period and decreases down a group in the periodic table.
Option 2: Atomic radius decreases across a period and increases down a group in the periodic table.
Option 3: Atomic radius decreases across a period and down a group in the periodic table.
Option 4: Atomic radius increases across a period and increases down a group in the periodic table.
Correct Answer: Atomic radius decreases across a period and increases down a group in the periodic table.
Solution : The correct option is Atomic radius decreases across a period and increases down a group in the periodic table.
This trend occurs because, across a period, increasing nuclear charge attracts electrons
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