Kolkata Police SI Mock Test - 1 - Kolkata Police SI MCQ

The RBI’s “Finances of Panchayati Raj Institutions (PRIs)” report analyzes data from 2.58 lakh Panchayats for 2020-21 to 2022-23, highlighting key findings. Panchayats heavily rely on grants (95%) due to limited own revenue sources like property taxes. Inter-state variations in devolution impact socio-economic outcomes. Inconsistent data poses challenges in assessing fiscal health. PRIs struggle with local tax revenue generation due to a limited tax base, administrative issues, and unclear guidelines. Revenue sources include Central and State government grants, and PRIs have the authority to impose taxes and fees.

The correct answer is It is a closed system.
Key Points

• Ecosystem:
  • Ecosystem, a natural resource system, the complex of living organisms, their physical environment, and all their interrelationships in a particular unit of space.
  • An ecosystem is an open system that can be categorized into its abiotic constituents, including minerals, climate, soil, water, sunlight, and all other nonliving elements, and its biotic constituents, consisting of all its living members. Hence, statement 3 is incorrect.
  • Linking these constituents together are two major forces: the flow of energy through the ecosystem, and the cycling of nutrients within the ecosystem.
  • The fundamental source of energy in almost all ecosystems is radiant energy from the Sun.
  • The energy of sunlight is used by the ecosystem’s autotrophic, or self-sustaining, organisms. Consisting largely of green vegetation, these organisms are capable of photosynthesis i.e., they can use the energy of sunlight to convert carbon dioxide and water into simple, energy-rich carbohydrates.
  • The autotrophs use the energy stored within the simple carbohydrates to produce the more complex organic compounds, such as proteins, lipids, and starches, that maintain the organisms’ life processes.
  • The autotrophic segment of the ecosystem is commonly referred to as the producer level.

Additional Information

• The organic matter generated by autotrophs directly or indirectly sustains heterotrophic organisms.
• Heterotrophs are the consumers of the ecosystem; they cannot make their own food.
• They use, rearrange, and ultimately decompose the complex organic materials built up by the autotrophs.
• All animals and fungi are heterotrophs, as are most bacteria and many other microorganisms.
• Together, the autotrophs and heterotrophs form various trophic (feeding) levels in the ecosystem: the producer level, composed of those organisms that make their own food; the primary consumer level, composed of those organisms that feed on producers; the secondary consumer level, composed of those organisms that feed on primary consumers; and so on.
• The movement of organic matter and energy from the producer level through various consumer levels makes up a food chain.
• For example, a typical food chain in a grassland might be grass (producer) → mouse (primary consumer) → snake (secondary consumer) → hawk (tertiary consumer).
• Actually, in many cases the food chains of the ecosystem overlap and interconnect, forming what ecologists call a food web.
• The final link in all food chains is made up of decomposers, those heterotrophs that break down dead organisms and organic wastes.
• A food chain in which the primary consumer feeds on living plants is called a grazing pathway; that in which the primary consumer feeds on dead plant matter is known as a detritus pathway.
• Both pathways are important in accounting for the energy budget of the ecosystem.

The Correct Answer  is A: 1 Only

Explanation for the Correct Answer:
The Bhimbetka rock shelters are an archaeological site in central India that spans the prehistoric Paleolithic and Mesolithic periods, as well as the historic period. It exhibits the earliest traces of human life on the Indian subcontinent and evidence of Stone Age habitation starting at the site in Acheulian times.
1. Evidence of Use of Tools and Implements:

• Bhimbetka caves indeed demonstrate the continuity of human evolution from the Lower Paleolithic period to the Mesolithic period to the Chalcolithic period. This is primarily because these caves contain a rich collection of archaeological findings.
• The site has yielded tools and implements from all these periods, providing concrete evidence of human evolution and progress in tool-making techniques and survival strategies.
• The artifacts found here include tools from the Old Stone Age (Lower Palaeolithic), tools from the Middle Stone Age (Mesolithic), as well as tools from the New Stone Age (Chalcolithic).
• This shows a clear progression and continuity of human activities and evolution over a long period of time, which is why statement 1 is correct.

2. Presence of Shankhalipi Inscriptions:

• While the Bhimbetka caves do contain ancient inscriptions, the presence of "Shankhalipi" inscriptions specifically is not a significant factor in demonstrating the continuity of human evolution from the Lower Paleolithic period to the Mesolithic period to the Chalcolithic period.
• Shankhalipi, also known as shell-script, is a unique and lesser-known script found in India, and it is not associated with the Paleolithic, Mesolithic, or Chalcolithic periods.
• Therefore, the presence of Shankhalipi inscriptions in the Bhimbetka caves does not directly support the evidence of continuity of human evolution over these periods. This is why statement 2 is not correct.

So, the correct answer to the question is option A: 1 only.

The correct answer is: 'Both (A) and (R) are true and (R) is the correct explanation of (A)'

• SAGAR (Security and Growth for All in the Region) is a strategic vision launched by India in 2015 for enhancing maritime cooperation in the Indian Ocean region.
  • This statement is accurate.
  • SAGAR was indeed introduced by India to strengthen its ties with maritime neighbors and foster regional collaboration in the Indian Ocean.
• India's objective with SAGAR is to enhance economic and security connections with its maritime neighbors while also aiding in the development of its maritime security capabilities.
  • This serves as a correct and precise explanation of the purpose behind SAGAR.
  • Through SAGAR, India aims to boost economic cooperation and trade, ensure maritime security, and support sustainable development within the region.
  • By helping neighboring countries in enhancing their maritime security capabilities, India aims to promote a secure and stable Indian Ocean region.

Additional Information

• Within the framework of SAGAR, India looks to bolster maritime cooperation through activities like joint patrols, capacity-building initiatives, information sharing, and maritime drills with partner nations.
• The scope of SAGAR goes beyond security aspects to encompass sustainable development, blue economy, disaster management, and environmental preservation in the Indian Ocean region.

Food and Agriculture Organization (FAO) released its flagship report, the State of Food and Agriculture (SOFA). Although current agrifood systems provide nourishment and sustain economies, they also impose huge hidden costs on health and the environment – the equivalent of at least $10 trillion annually.
The figure represents nearly 10 per cent of global Gross Domestic Product (GDP), according to the 2023 edition of the report which covers 154 countries.

Union Home Minister Amit Shah addressed the 5th International and 44th All India Criminology Conference at the National Forensic Science University in Gandhinagar, Gujarat. The conference focused on Forensic Behavioural Science, an emerging field highlighted by Shah. Emphasizing the role of Behavioral Science in crime prevention, he inaugurated a Digital Forensic Excellence Centre for capacity building and investigations, underscoring its importance alongside a robust administration and judiciary.

Israel Aerospace Industries (IAI) is the aerospace and defence company that set up AeroSpace Services India (ASI) as its Indian subsidiary. This move signifies IAI's expansion into the Indian market, with ASI being authorized as the sole OEM's Technical Representative for the medium-range surface-to-air Missile (MRSAM) system in India.

The 12th edition of the India-Italy Military Cooperation Group (MCG) meeting took place in New Delhi on March 12–13, 2024. The two-day meeting focused on new initiatives to enhance defense cooperation and military-to-military exchange between the two countries. Both sides expressed satisfaction with the proposed new initiatives.

The Indian arm wrestlers won 11 medals at the 44th World Armwrestling Championship and 25th Para Armwrestling Championship held in Almaty, Kazakhstan from August 24 to September 3, 2023. The team won three gold, six silver and two bronze medals.

Reliance Industries (RIL) has announced a merger deal with Viacom18 Media and The Walt Disney Company to establish a joint venture (JV) integrating Viacom18 and Star India operations. With RIL committing a significant investment of Rs 11,500 crore (approximately US$ 1.4 billion) into the JV, this strategic move aims to reshape the Indian entertainment and sports industry landscape.

Preparing the family tree using the following symbols:

A possible tree diagram will be:

Praveena’s father’s sister’s mother is the grandmother of Sandhya.

Hence, "Grandmother" is the correct answer.

Checking Statement I:

As per hints, following arrangements can be formed

H > J > K > I > G > F

Clearly H earns the maximum amount.

Hence data in statement I is sufficient to answer the question.

Checking Statement I:

As per hints, following arrangements can be formed

H > J > K > I > G > F

Clearly H earns the maximum amount.

Hence data in statement II is sufficient to answer the question.

Here, the data in either Statement I or II alone is sufficient to answer the question.

Hence, Option C is correct.

The pattern followed is:

Hence, the correct answer is "110".

The Logic is:

First Number² + First Number = Second Number

25 : 650 → 25 : 25² + 25 = 625 + 25 = 650

Similarly,

21 : ? → 21 : 21² + 21 = 462

⇒ ? = 441 + 21

⇒ ? = 462

Hence, '462' is the correct answer.

The logic follows here is:-

From The Statement

Parrot is a bird, but 'parrot' is called 'rat'. So 'rat' is a bird.

Hence "rat" is the correct answer.

Hence, the data is inadequate.

Checking Statement I:
Using statement I, we do not get any relation between car and cycle.
Therefore, the conclusion cannot be derived using statement I alone.
Checking Statement II:
Using statement II, we do not get any relation between car and cycle.
Therefore, the conclusion cannot be derived using statement II alone.
Checking both statements I and II:
Using both statements I and II, we get the following diagram:

Since some cycles are trains and no train is buses and all cars are buses, therefore, some cycles are not cars is definitely true.
Since the required conclusion can be derived by using statements I and II together.
Hence, Option D is correct.

From Statement I:  From this statement, we have three possible scenarios as shown:

Clearly, Statement I alone is insufficient to answer the question.

From Statement II:

From this statement, we get the following table

Clearly, Statement II alone is not sufficient to answer the question.

Now combining both the statements, we get,

Hence, option D is the correct answer.

v₁ = speed in first half

D = total distance traveled = 50 km

d₁ = distance of the first half = 25 km

t₁ = time taken in first half

t₁ = d₁ /v₁

t₁ = 25/v₁                                                 (1)

for the second half :

v₂ = speed in second half = v₁ + 10

d₂ = distance of the second half = 25 km

t₂ = time taken in second half

t₂ = d₂ /v₂

t₂ = 25/(v₁ + 10)                                          (2)

given that :

t₁ - t₂ = 5/60                        (5 min in h = 5/60 h)

(25/v₁ ) - (25/(v₁ + 10)) = 5/60

v₁ = 50 km/h

Total surface area of a cylinder = πr²+2πrh+πr²=2πr(r+h)

Sum of decimal places = 7.
Since the last digit to the extreme right will be zero (since 5 x 4 = 20), so there will be 6 significant digits to the right of the decimal point.

Let AB be the taller building of height 60 m and CD be the smaller one of height h m.

⇒ DB / AB = tan 30º = 1/√3

⇒ DB = AB x tan 30º

= 34.64 m.

tan 30º = AE/CE = AE/DB = 1/ = AE/34.64

∴ AE = 60 – h = 20

∴ h = 40 m

HCF = 12
Numbers = 12x and 12y
where x and y are prime to each other.
∴ 12x × 12y = 2160

= 15 = 3 × 5, 1 × 15
Possible pairs = (36, 60) and (12, 180)
Hence , Number of such possible pairs is 2.

Hence, Option B is correct.

Hence, Option D is correct.

Let AB be the building and the man is standing at A.

When the car is 200m away from the building, the angle of depression is 60°

tan 60° = BD/AB = √3

⇒ 200/AB = √3

⇒ AB = 115.47 m

⇒ tan30° =BC/AB = x/115.47 = 1/√3

⇒ x = 66.67

Now, the car travels distance CD in 8 seconds

 CD = BD – BC = 200 – 66.67 = 133.33 m

 Speed = 133.33/8 = 16.67 m/s

Hence, Option A is correct.