Staff Selection Commission Sub Inspector Exam
Question : Which ecosystem is the only one that does not thrive on solar energy?
Option 1: Marine organisms
Option 2: Phytoplanktons
Option 3: Deep-sea hydrothermal ecosystem
Option 4: Nitrogen-fixing bacteria
Correct Answer: Deep-sea hydrothermal ecosystem
Solution : The correct option is the Deep sea Hydrothermal Ecosystem.
In deep-sea hydrothermal vents, where sunlight doesn't penetrate, certain bacteria use the energy from the chemical reactions between minerals in the vent fluids and seawater to produce organic molecules. This process is called
Question : Comprehension: Read the passage carefully and answer the questions that follow. India's favourable demographic trends, which have increased the workforce's percentage of the overall population, have paved the way for a significant middle-class expansion. A big population bulge emerging from absolute poverty and set to reach the middle class would generate new dynamics. In India, over 55 percent of the population is predicted to reach the middle class. In reality, because India's demographics are significantly younger than China and the United States, the country's middle class might be the world's largest (in terms of population) by 2025. It is no exaggeration to argue that future growth will be reliant on the increasing middle class and that the middle class's development will be reliant on growth. Growth has been fuelled by both private consumption and saving, both of which are fuelled by the middle class. India's private consumption accounts for over 60% of the country's GDP, while private consumption growth has contributed to 70% of the country's growth since 2000. Even though China's middle class is now greater than India's, private spending in the former accounts for a lesser share of growth. In contrast to the United States, where domestic savings are dropping and the country borrows excess funds from outside to invest and expand, India's domestic savings and investments are increasing and funding investments. The emergence of the middle class is anticipated to coincide with a transition away from large-scale informality, which now characterises much of the services and industrial sectors, and toward more formal, wage-earning, and medium-scale firms. Technological advancements will spread at a faster rate. Cities will expand as the necessities concentrate on them. If there is enough movement across states and from rural to urban regions, the population increase will be more evenly distributed.
Question: Which of the following options has contributed to the expansion of the middle class?
Option 1: Evenly distributed economic opportunities
Option 2: Increased private consumption
Option 3: Increased workforce percentage
Option 4: Increased foreign investment
Correct Answer: Increased workforce percentage
Solution : The correct option is the third option.
The passage states that India's favourable demographic trends have increased the workforce's percentage of the overall population, which, in turn, has paved the way for a significant middle-class expansion.
The population bulge emerging from absolute poverty
Question : There are some plastics when moulded once, cannot be softened by heating. These are called:
Option 1: Thermosetting polymers
Option 2: Polyvinyl chloride
Option 3: Thermoplastic polyurethanes (TPU)
Option 4: High-density polyethene (HDPE)
Correct Answer: Thermosetting polymers
Solution : The correct answer is Thermosetting polymers.
Some polymers become inflexible once formed and cannot be softened through heating. These are termed thermosetting polymers. Melt-processable thermoplastic elastomers with excellent flexibility and durability are called thermoplastic polyurethanes, or TPUs in short.
Question : The sides of a rectangle are in the ratio of 3 : 8 and its area is 1944 cm2. What is its perimeter?
Option 1: 189 cm
Option 2: 208 cm
Option 3: 198 cm
Option 4: 308 cm
Correct Answer: 198 cm
Solution : Given: Area = 1944 cm2 Side ratio = 3 : 8 Let, Length = $3x$ Breadth = $8x$ Now, $\Rightarrow 3x\ \times 8x\ =\ 1944$ $\Rightarrow 24x^2\ =\ 1944$ $\Rightarrow x^2\ =\ 81$ $\Rightarrow x\ =\ 9$ So, Length $=3\times 9\ =\ 27$
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’. This is the worse famine this country has seen in a decade.
Option 1: most worse
Option 2: very worst
Option 3: No substitution required
Option 4: the worst
Correct Answer: the worst
Solution : The fourth option is the right choice.
We know that adjectives have three forms: positive (e.g., bad), comparative (e.g., worse), and superlative (e.g., worst). The superlative form is used when comparing more than two things or describing something as the highest degree or most
Question : Multicasting is _________.
Option 1: sending a frame to a group of stations
Option 2: sending a frame to a single station
Option 3: sending a frame to a minimum of 100 groups of stations
Option 4: not sending a frame to any group of station
Correct Answer: sending a frame to a group of stations
Solution : The correct answer is sending a frame to a group of stations.
Multicast is a type of group communication in which a sender simultaneously distributes data to several recipients or network nodes. It is a form of
Question : Rajkumar decides to sell his watch at a discount of 5%. However, his brother purchases it from him and receives an 8% discount. Raj loses Rs. 45 in profit as a result of this. What was the watch's marked price?
Option 1: Rs. 1,500
Option 2: Rs. 1,410
Option 3: Rs. 1,430
Option 4: Rs. 1,560
Correct Answer: Rs. 1,500
Solution : Let the marked price of the watch be $x$. After the 5% discount the selling price = $x×(\frac{100-5}{100})$ = $\frac{95x}{100}$ Also after an 8% discount the selling price = $x×(\frac{100-8}{100})$ = $\frac{92x}{100}$ According to the question, $\frac{95x}{100}-\frac{92x}{100}=45$ ⇒ $3x=4500$ ⇒ $x=\frac{4500}{3}=1,500$ Hence, the correct
Question : Directions: A @ B means A is the husband of B; A & B means A is the mother of B; A # B means A is the daughter of B. If D & G @ F & E @ H, then how is G related to H?
Option 1: Husband’s father
Option 2: Husband’s mother
Option 3: Mother
Option 4: Father
Correct Answer: Husband’s father
Solution : Given: A @ B ⇒ A is the husband of B A & B ⇒ A is the mother of B A # B ⇒ A is the daughter of B
As per the given information, the family tree will be as follows –
Question : The area (in m2) of a circular path of uniform width $x$ metres surrounding a circular region of diameter d metres is _____.
Option 1: $\pi x(x+2 \mathrm{~d})$
Option 2: $\pi x(x+\mathrm{d})$
Option 3: $\pi x(2 x+\mathrm{d})$
Option 4: $\pi x\left(x+\frac{\mathrm{d}}{2}\right)$
Correct Answer: $\pi x(x+\mathrm{d})$
Solution : Radius of circular region ($r$) = $\frac{d}{2}$ Width of path = $x$ m External radius of path ($R$) = $\frac{d}{2} + x$ As we know, Area of path = $π(R^2 - r^2)$ = $\pi[(\frac{d}{2} + x)^2 - (\frac{d}{2})^2]$ = $\pi [\frac{d^2}{4} + x^2+ dx
Question : 'Ashta Mahasthan' refers to the eight significant places associated with the life of the Buddha. Which among the following is not one of those?
Option 1: Lumbini
Option 2: Raigad
Option 3: Sarnath
Option 4: Bodh Gaya
Correct Answer: Raigad
Solution : The correct option is Raigad.
Raigad is not one of the Ashta Mahasthan, the eight significant places associated with the life of Buddha. These include Lumbini, Bodh Gaya, Sarnath, Kushinagar, Shravasti, Sankissa, and Rajgir. Raigad, a historic fort in Maharashtra, lacks any connection to Buddha's
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