Kolkata Police SI Mock Test - 3 - Kolkata Police SI MCQ

• Assertion (A): The rupee is widely accepted as a medium of exchange in India.


• Reason (R): It is authorized by the government of the country.

• Assertion (A) is correct: The rupee is indeed widely accepted as a medium of exchange in India. It is the official currency of the country and is used for all transactions.


• Reason (R) is also correct: The rupee is authorized by the government of India as the legal tender for transactions. It is issued and regulated by the Reserve Bank of India, which is the central monetary authority in the country.


• R is the correct explanation of A: The reason why the rupee is widely accepted as a medium of exchange in India is because it is authorized and backed by the government. The government ensures its stability and acceptance in the economy.

Solar energy - Greenhouse effect - Incorrect

• The term ‘Greenhouse effect’ has been derived from a phenomenon that occurs in a greenhouse.
• A greenhouse looks like a small glasshouse and is used for growing plants, especially during winter.
• In a greenhouse, the glass panel lets the light in but does not allow heat to escape.
• Therefore, the greenhouse warms up, very much like inside a car that has been parked in the sun for a few hours. 
• The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth’s surface and atmosphere.
• Solar energy is trapped by the earth atmosphere and radiates slowly so as to cover our earth with a warm blanket.
• This is the natural process of the greenhouse effect on earth to maintain its temperature and makes the earth perfect for life.
• Without the greenhouse effect, the average temperature at the surface of Earth would have been a chilly –18°C rather than the present average of 15°C.
• Carbon dioxide, methane and water vapour are the major greenhouse gases that absorb the infrared radiation from the Earth and re-emit it.
• It is not caused due to solar energy but due to greenhouse gasses.

Thus, the solar energy-greenhouse effect is not the correct pair.

Additional Information

Fossil fuel-burning - Release of CO₂ - Correct

• Carbon dioxide (CO₂) is released into the atmosphere by respiration, the burning of fossil fuels for energy.
• In recent years, their quantities have increased significantly due to the burning of fossil fuels.
• The increased amount of CO₂ in the air is mainly responsible for global warming.

Nuclear power - Radioactive wastes - Correct

• Initially, nuclear energy was hailed as a non-polluting way of generating electricity.
• Later on, it was realised that the use of nuclear energy has very serious inherent problems i.e. the generation of radioactive waste.
• Safe disposal of radioactive wastes is important in nuclear power energy factories.
• Improper disposal of nuclear waste can cause serious physical and biological deformities in living organisms when directly exposed to them. 

Biomass burning - Release of CO₂  - Correct

• Biomass burning means the burning of living or dead vegetation.
• It happens during land cleaning in the agriculture process when crops are out of the field.
• In this process, a high amount of CO₂ is released into the environment.

The Zimbabwe African National Union-Patriotic Front has been the ruling party in Zimbabwe since independence in 1980. The party was led for many years under Robert Mugabe, first as Prime Minister with the Zimbabwe African National Union and then as President from 1987 after the merger with the Zimbabwe African People's Union and retaining the name ZANU–PF, until 2017 when he was removed as leader.

Mauna Kea (Hawaii) in the Pacific Ocean is an undersea mountain. It is higher than Mount Everest being 10,205 metres high.

The correct answer is 15th July, 1997.

Key Points

• Jhajjar was separated from Rohtak district on 15th July 1997 (officially).
• Jhajjar district was created out of Rohtak district by carving out Jhajjar and Bahadurgarh tahsils on 25th June 1997. 
• During the period of 1991-2001, the following jurisdictional changes were observed.:
  • Bahadurgarh tahsil contained 62 villages and Bahadurgarh Town.
  • Jhajjar tahsil contained 199 villages and two towns, namely, Jhajjar and Beri, and these were part of Rohtak district.
  • Beri tahsil was newly created on 27th July 1995 by transferring 39 villages and Beri Town from Jhajjar tahsil.
  • Bahadurgarh tahsil gained 9 villages from Jhajjar tahsil and lost 2 villages to Rohtak tahsil (Rohtak district).

The Universal Declaration of Human Rights is a landmark document adopted by the UN that outlines fundamental human rights.

The Indian government aims to set up 'Bharat Park,' a trade zone in the UAE, with showrooms and warehouses to display and store Indian-made goods, facilitating international transactions and showcasing products globally.

• Statement 1 is correct: During the Gupta period, Brahmanism indeed became more prominent, with a significant emphasis on the worship of gods such as Shiva and Vishnu. This shift is reflected in the religious practices and literary compositions of the time, indicating the period's religious orientation.
• Statement 2 is incorrect: Contrary to the considerable patronage Brahmanism received, Buddhism did not enjoy the same level of royal support during the Gupta era. While the Gupta kings practiced religious tolerance and did not persecute Buddhists or Jains, the focus and patronage shifted more towards Brahmanism, affecting the religious landscape.
• Statement 3 is correct: The Gupta period was marked by the composition of several key religious texts, including the Vishnupurana and the Bhagavad Gita (though the Gita itself is part of the Mahabharata, which reached its final form during this era). These texts played a crucial role in shaping Hindu philosophy and religious practices, reflecting the era's intellectual and spiritual achievements.

The correct option is Option C. 
The origin of the Maratha Confederacy may be traced to the revival of the Jagir or Saranjam system by Rajaram. The bases of this system were laid during the time of Balaji Rao I.
 

World Poetry Day is celebrated on March 21 every year. This day is significant as it honours the role of poetry in cultural and linguistic expression. It was adopted by UNESCO in 1999 to promote linguistic diversity, revive poetry traditions, and increase awareness and understanding of endangered languages. The theme for World Poetry Day 2024 is "Standing on the Shoulders of Giants," highlighting the influence and inspiration that past poets have on contemporary poetry.

The correct answer is Refrigerators.

Important Points

• Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. Mostly used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.
• Chlorofluorocarbons or CFCs are strong ozone-depleting substances. They are widely used in Refrigerator, Air conditioner.
• How they affect the environment:
  • They remain in the atmosphere for a long period of time 
  • They enter the stratosphere from the troposphere, disintegrating slowly by the action of UV radiation and thus releasing Chlorine(Cl) radicals which cause Ozone depletion.
  • One Chlorine atom has the capability to destroy over 4000 molecules of Ozone(O₃) in one month.
• Montreal Protocol-1987
  • The Montreal Protocol is the most effective international environmental treaty to phase out the Ozone Depleting Substances from the atmosphere.
  • Came into force in 1989.
  • It successfully curbed the 98% production of chlorofluorocarbons.
• Kigali Agreement-2016
  • It is an amendment to the Montreal protocol
• Paris Agreement-2015
  • It is an international agreement to combat climate change. 

The groundbreaking discovery of India's first lithium deposits, estimated at 5.9 million tonnes, was made in Jammu and Kashmir in February. Subsequent modifications to mining rules in July allowed private miners to explore these critical minerals, and reports indicate that the region will auction its lithium reserves in the coming months.

The correct answer is Kurukshetra.

• Statement 1: Correct. The Harappan Civilization used a sophisticated system of weights and measures, often based on multiples of 16, which indicates their advanced understanding of standardization and trade.
• Statement 2: Incorrect. The script of the Harappan Civilization remains undeciphered. Despite numerous efforts, the meaning of the symbols is still unknown.
• Statement 3: Correct. Archaeologists have discovered over 1500 sites associated with the Harappan Civilization across the Indian subcontinent.

Thus, only two statements are correct.

• These upsurges were like a direct and violent conflict with authority, which had obvious limitations.

• Only the more militant sections could participate. 

• These upsurges were short-lived and were confined to a few urban centres while the general INA agitation reached the remotest villages. Communal unity witnessed was more organizational than unity among the people. 

• Muslim ratings went to the League to seek advice and the rest to the Congress and the Socialists.

The International Day of Older Persons is celebrated on October 1st every year. It is a day to recognize the contributions of older persons and to examine issues that affect their lives. The theme for the International Day of Older Persons in 2023 is "Resilience of Older Persons in a Changing World." This theme highlights the resilience of older persons in the face of challenges such as climate change, pandemics, and conflict.

The Varuna naval exercise is a biennial exercise between the Indian Navy and the French Navy. The 21st edition of the exercise, Varuna-23, was held in the Arabian Sea in September 2023. Phase II of the exercise was held from September 6 to 9, 2023.

The following rights make sure each individual has equal rights and freedom to exercise their rights.

The family chart is as follows:

i) A is father of C and D is son of B.

ii) E is brother of A.

iii) If C is sister of D

Drawing the family tree as per the given information:

Thus we can see B is the wife of A.

E is the brother of A.

Thus we can conclude B is the sister-in-law of E.

Hence, the correct answer is "Sister-in-law".

The family chart is as follows:

i) A is brother of B
ii) B is brother of C
iii) C is husband of D
iv) E is father of A
Drawing the family tree as per the given information:

Thus we can see D is the Daughter - in - law of E.
Hence, the correct answer is "Daughter - in - law".

Given expression,

84% of 9600 + 48% of 6900 = ? + 50% of 2000

⇒ (84/100) × 9600 + (48/100) × 6900 = ? + (50/100) × 2000

⇒ 84 × 96 + 48 × 69 = ? + 50 × 20

⇒ 8064 + 3312 = ? + 1000

⇒ 11376 = ? + 1000

⇒ ? = 11376 - 1000 = 10376

Total Mango trees = 40%

Remaining trees = (100 – 40 – 50)% = 10%

Hence, Option B is correct.

–12, –6, 0, 6,…
Let a(1) = -12, a(2) = -6, a(3) = 0, a(4) = 6
First relational d,
a(2) – a(1) = -6 – (-12) = 6
Second relational d,
a(3) – a(2) = 0 – (-6) = 6
Third relational d,
a(4) – a(3) = 6 – (0) = 6
all the d are equals to each other, hence
d = 6.

Area of Trapezium  = 1/2 (sum of Parallel sides ) * height
let a and b are the parallel sides:
a= 4cm
b= 6 cm
h= 3cm
according to formula -> 1/2(4+6)*(3)
=>1/2(10)(3)
=>30/2
=>15 cm²

Diameter of the circle = breadth of the rectangle = 42 meters
Radius of the circle

So the answer 

Hence, Option D is correct.

Time → A : C = 40 : 90 = 4 : 9
Efficiency → A : C = 9 : 4

Hence, Option D is correct.