General knowledge MCQ – Change your future

81. Agriculture helped people settle in one place. [University Grants Commission Examination-2022]

Correct Answer: Correct answer is: (A) Neolithic Age.

Exam Relevance: UPSC, GRE, GMAT, Civil Services

Difficulty: Easy

Concept notes: The Neolithic Age, also known as the New Stone Age, is characterized by the development of agriculture and the establishment of permanent settlements.

Common Mistakes: Students may confuse the Neolithic Age with the Paleolithic Age, which is characterized by a hunter-gatherer lifestyle and the absence of settled communities.

Explanations: Agriculture allowed humans to settle in one place, as they no longer needed to follow herds of animals or search for food. This shift to agriculture marks the beginning of the Neolithic Age, where people started cultivating crops and domesticating animals, leading to the establishment of permanent settlements.

Option Analysis:

Option A: Correct. The Neolithic Age is associated with the development of agriculture and permanent settlements.
Option B: Incorrect. The Paleolithic Age is characterized by a nomadic lifestyle and the absence of agriculture.
Option C: Incorrect. The Neolithic Age is the correct period for the development of agriculture and permanent settlements, not the Paleolithic Age.
Option D: Incorrect. The Neolithic Age is the correct period for the development of agriculture and permanent settlements.

Mnemonic: Neolithic: New Life in Towns

82. Permanent hardness of water is due to the presence of [General Knowledge for IBPS PO (CWE PO/MT) Examination-1986]

Correct Answer: Correct answer is: (C) Calcium sulphate.

Exam Relevance: IBPS PO, UPSC, SSC, GATE

Difficulty: Moderate

Concept notes: Permanent hardness of water is caused by the presence of minerals that do not precipitate out of solution when heated. Calcium sulphate is one such mineral that contributes to permanent hardness.

Common Mistakes: Students often confuse temporary hardness with permanent hardness. Temporary hardness is due to bicarbonates of calcium and magnesium, which can be removed by boiling, whereas permanent hardness is due to sulphates and chlorides of calcium and magnesium, which cannot be removed by boiling.

Explanations: Permanent hardness of water is due to the presence of minerals that do not precipitate out of solution when heated. Calcium sulphate (CaSO₄) is a mineral that contributes to permanent hardness because it remains dissolved even when the water is heated. This is in contrast to temporary hardness, which is caused by bicarbonates of calcium and magnesium that can be removed by boiling.

Option Analysis:

Option A: Calcium bicarbonate can be removed by boiling, contributing to temporary hardness, not permanent hardness.
Option B: Magnesium bicarbonate can also be removed by boiling, contributing to temporary hardness, not permanent hardness.
Option C: Calcium sulphate does not precipitate out of solution when heated, contributing to permanent hardness.
Option D: Sodium bicarbonate can be removed by boiling, contributing to temporary hardness, not permanent hardness.

83. Vitamin B 12 is most useful for combating

Correct Answer: Correct answer is: (A) Anemia.

Exam Relevance: UPSC, GRE, MCAT, GMAT

Difficulty: Easy

Concept notes: Vitamin B12 is essential for the production of red blood cells and the maintenance of the nervous system. Deficiency in Vitamin B12 can lead to a specific type of anemia known as pernicious anemia.

Common Mistakes: Students may confuse Vitamin B12 with other vitamins that address different deficiencies, such as Vitamin A for night blindness or Vitamin D for rickets.

Explanations: Vitamin B12 is crucial for the formation of red blood cells. A deficiency in Vitamin B12 can result in a decrease in the number of red blood cells, leading to anemia. This is why Vitamin B12 is most useful for combating anemia.

Option Analysis:

Option A: Vitamin B12 is essential for red blood cell production, making it useful for treating anemia.
Option B: Goitre is related to iodine deficiency, not Vitamin B12.
Option C: Night blindness is associated with Vitamin A deficiency, not Vitamin B12.
Option D: Rickets is caused by a deficiency in Vitamin D, not Vitamin B12.

Mnemonic: B12 for Blood, A for Night, D for Bones

84. By area, which is the largest state in the USA? [Manipur High Court Examination-2018]

Correct Answer: Correct answer is: (B) Alaska.

Exam Relevance: UPSC, SSC, Bank PO, Civil Services

Difficulty: Easy

Concept notes: Alaska is the largest state in the United States by area.

Common Mistakes: Students may confuse Alaska with Texas, which is the second-largest state by area.

Explanations: Alaska is the largest state in the United States by area, covering approximately 663,268 square miles. This makes it significantly larger than the next largest state, Texas, which covers about 268,597 square miles. The vast size of Alaska is due to its location and geographical features, including extensive coastlines and large expanses of wilderness.

Option Analysis:

Option A: California is the third-largest state by area, not the largest.
Option B: Alaska is the largest state by area.
Option C: Texas is the second-largest state by area, not the largest.
Option D: This option is incorrect as Alaska is the correct answer.

Mnemonic: A: Alaska, Area's Apex

85. Allauddin Khalji did not levy [General Knowledge for Postal Kerala Circle Examination-2022]

Correct Answer: Correct answer is: (C) Qismat-i-khoti.

Exam Relevance: UPSC, SSC, Banking Exams, Postal Exams

Difficulty: Moderate

Concept notes: Qismat-i-khoti was a tax levied on the produce of the land, but it was not introduced by Allauddin Khalji. It was a tax system that existed in some form before his reign and was not specifically associated with him.

Common Mistakes: Students may confuse the tax systems introduced by different rulers of the Delhi Sultanate, leading to incorrect answers.

Explanations: Allauddin Khalji introduced several taxes to increase state revenue, including Kharaj, Ghari, and Charai. However, Qismat-i-khoti was not one of the taxes he introduced. This tax was a pre-existing system that was modified or continued by various rulers, but it was not specifically a tax introduced by Allauddin Khalji.

Option Analysis:

Option A: Kharaj was a land tax introduced by Allauddin Khalji.
Option B: Ghari was a tax on non-Muslims introduced by Allauddin Khalji.
Option C: Qismat-i-khoti was not introduced by Allauddin Khalji.
Option D: Charai was a tax on pastures introduced by Allauddin Khalji.

Mnemonic: K-G-C-Q: Kharaj, Ghari, Charai, Qismat-i-khoti (Q is not Khalji's)

86. The Kelkar proposals were [General Knowledge for NDA NA Examination-1988]

Correct Answer: Correct answer is: (B) Recommendations for tax reforms.

Exam Relevance: NDA NA Examination, UPSC Civil Services, SSC CGL

Difficulty: Moderate

Concept notes: The Kelkar Committee was established to recommend reforms in the tax system of India.

Common Mistakes: Students may confuse the Kelkar Committee with other committees that dealt with different sectors such as power or environmental issues.

Explanations: The Kelkar Committee, officially known as the Committee on Reforms in the Central Excise and Service Tax, was set up in 1994 to recommend reforms in the tax system. The committee's recommendations were aimed at simplifying and rationalizing the tax structure, making it more efficient and easier to administer. This makes the correct answer the recommendations for tax reforms.

Option Analysis:

Option A: The Kelkar Committee did not focus on the power sector.
Option B: The Kelkar Committee's primary focus was on tax reforms.
Option C: The Kelkar Committee did not address privatization of public sector undertakings.
Option D: The Kelkar Committee did not deal with vehicular pollution or CNG production.

Mnemonic: K for Kelkar, T for Tax.

87. When was Insolvency and Bankruptcy Board of India established? [Civil Services Examination-1996]

Correct Answer: Correct answer is: (C) 1st October, 2016.

Exam Relevance: Civil Services Examination, UPSC, Banking Exams, MBA Entrance Exams

Difficulty: Moderate

Concept notes: The Insolvency and Bankruptcy Board of India (IBBI) was established on 1st October, 2016, under the Insolvency and Bankruptcy Code, 2016.

Common Mistakes: Students often confuse the date of establishment with other significant dates related to the Insolvency and Bankruptcy Code, such as the date of enactment or the date of commencement of the code.

Explanations: The Insolvency and Bankruptcy Board of India (IBBI) was established on 1st October, 2016, as per the Insolvency and Bankruptcy Code, 2016. This date is significant as it marks the operational commencement of the regulatory body responsible for overseeing insolvency and bankruptcy processes in India.

Option Analysis:

Option A: Incorrect, as the IBBI was not established on 1st March, 2016.
Option B: Incorrect, as the IBBI was not established on 1st July, 2016.
Option C: Correct, as the IBBI was established on 1st October, 2016.
Option D: Incorrect, as the IBBI was not established on 1st December, 2016.

88. The Constitution of India mandates that the elections of the Panchayati Raj should be held regularly after a gap of [General Knowledge for SSC Examination-2016]

Correct Answer: Correct answer is: (D) 5 years.

Exam Relevance: SSC, UPSC, State PSC

Difficulty: Moderate

Concept notes: The Constitution of India, specifically the 73rd Amendment Act of 1992, mandates the regular election of Panchayati Raj institutions.

Common Mistakes: Students often confuse the term limits for Panchayati Raj elections with those of other local or national elections.

Explanations: The 73rd Amendment Act of 1992 introduced the Panchayati Raj system and mandated that elections for these local self-governance bodies should be held every five years. This ensures a regular turnover of leadership and maintains democratic participation at the grassroots level.

Option Analysis:

Option A: 3 years is incorrect as the Constitution mandates a longer period.
Option B: 4 years is incorrect as the Constitution mandates a longer period.
Option C: 2 years is incorrect as the Constitution mandates a longer period.
Option D: 5 years is the correct period as mandated by the Constitution.

Mnemonic: Panchayat, Raj, Five-Year Cycle

89. What is a synonym for 'edict'? [RRB JE Examination-2019]

Correct Answer: Correct answer is: (D) Command.

Exam Relevance: RRB JE, SSC CGL, UPSC Civil Services

Difficulty: Easy

Concept notes: An edict is a formal proclamation or command issued by a person in authority, such as a monarch or government.

Common Mistakes: Students may confuse 'edict' with 'recommendation' or 'wish', which do not carry the authoritative and binding nature of an edict.

Explanations: An edict is a formal and authoritative command or proclamation. It is issued by someone in a position of authority and is expected to be followed. The term 'command' accurately reflects this authoritative nature, making it the correct synonym for 'edict'.

Option Analysis:

Option A: Recommendation is a suggestion or advice, not a formal command.
Option B: Offering is a proposal or presentation, not a formal command.
Option C: Wish is a desire or hope, not a formal command.
Option D: Command is a formal order or instruction, which aligns with the meaning of an edict.

Mnemonic: E for Edict, C for Command.

90. Which is the official language of "Saint Lucia"? [IBPS Clerk Examination-1982]

Correct Answer: Correct answer is: (B) English.

Exam Relevance: IBPS Clerk, UPSC, SSC

Difficulty: Easy

Concept notes: Saint Lucia is an island nation in the Caribbean, and its official language is English.

Common Mistakes: Students might confuse the official language of Saint Lucia with other Caribbean nations that may have different official languages.

Explanations: Saint Lucia, as a former British colony, adopted English as its official language. This is consistent with many other Caribbean nations that were also part of the British Empire.

Option Analysis:

Option A: Arabic is not the official language of Saint Lucia.
Option B: English is the official language of Saint Lucia.
Option C: Spanish is not the official language of Saint Lucia.
Option D: Portuguese is not the official language of Saint Lucia.

Mnemonic: Saint Lucia, English, British Influence

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