General knowledge MCQ – Change your future

761. Which fruit is the most popular and most consumed in the world? [SSC CGL Examination-1987]

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

Exam Relevance: SSC CGL, UPSC, Banking Exams, Railway Exams

Difficulty: Easy

Concept notes: Bananas are the most popular and most consumed fruit in the world due to their widespread availability, affordability, and nutritional benefits.

Common Mistakes: Students might mistakenly believe that apples or oranges are the most consumed fruit due to their common presence in many diets.

Explanations: Bananas are the most popular and most consumed fruit globally because they are widely cultivated, easily accessible, and affordable. They are also rich in essential nutrients such as potassium and fiber, making them a popular choice for many people around the world.

Option Analysis:

Option A: Apples are popular but not the most consumed globally.
Option B: Oranges are widely consumed but not the most popular globally.
Option C: Strawberries are less commonly consumed on a global scale compared to bananas.
Option D: Bananas are the most popular and most consumed fruit globally.

Mnemonic: BANANA: Best Available Nutrient, Affordable, Nutritious, Accessible.

762. This river in China is also known as the Yellow River; flows from Mongolia to the Pacific Ocean [DRDO Examination-2007]

Correct Answer: Correct answer is: (D) Huang He.

Exam Relevance: DRDO Examination, UPSC, Civil Services Examination

Difficulty: Easy

Concept notes: The Huang He, also known as the Yellow River, is one of the major rivers in China.

Common Mistakes: Students may confuse the Huang He with the Yangtze River, which is another major river in China.

Explanations: The Huang He, also known as the Yellow River, is a major river in China that flows from Mongolia to the Pacific Ocean. It is often referred to as the "cradle of Chinese civilization" due to its historical and cultural significance. The river is named "Yellow" due to the high silt content in its water, which gives it a yellowish hue.

Option Analysis:

Option A: The Yangtze River is the longest river in China, not the Yellow River.
Option B: Chiang Jiang is another name for the Yangtze River, not the Yellow River.
Option C: The Indus River is located in South Asia, not in China.
Option D: Huang He is the correct name for the Yellow River in China.

Mnemonic: Huang He: "H" for "Huang He" and "Y" for "Yellow," remember "H-Y" for the Yellow River.

763. Who were the Aryans? [TET Examination-1992]

Correct Answer: Correct answer is: (B) A group of people who migrated to India from Europe and Northern Asia during ancient times.

Exam Relevance: TET, UPSC, SSC, Civil Services

Difficulty: Moderate

Concept notes: The Aryans were a group of people who migrated to India from Europe and Northern Asia during ancient times. They are believed to have brought with them the Indo-European languages and influenced the development of Vedic culture in India.

Common Mistakes: Students often confuse the Aryans with other groups that had significant impacts on Indian history, such as the Maurya Empire or traders who established trade routes between China and Rome.

Explanations: The Aryans were a nomadic group that migrated to India around 1500 BCE. They brought with them a distinct culture, language, and religious practices that significantly influenced the development of ancient Indian civilization. The other options refer to different historical groups and events that are not directly related to the Aryans.

Option Analysis:

Option A: The Aryans did not conquer the Maurya Empire, as the Maurya Empire came much later in Indian history. The Aryans were present in India long before the Maurya Empire was established.
Option B: This is the correct answer. The Aryans migrated to India from Europe and Northern Asia during ancient times, bringing with them significant cultural and linguistic changes.
Option C: The spread of Buddhism to East Asia occurred much later, around the 2nd century BCE, and was not directly related to the Aryans.
Option D: The establishment of trade routes between China and Rome is associated with the Silk Road, which developed much later and is not related to the Aryans.

Mnemonic: Aryans: "A" for Ancient, "R" for Region, "Y" for Yonder (from Europe and Northern Asia)

764. The gas mostly present in air [LIC AAO Examination-2002]

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

Exam Relevance: LIC AAO, UPSC, SSC, Banking Exams

Difficulty: Easy

Concept notes: Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe.

Common Mistakes: Students often mistakenly believe that oxygen is the most abundant gas in the atmosphere because it is essential for human respiration.

Explanations: Nitrogen is the most abundant gas in the Earth's atmosphere, comprising approximately 78% of the air. Oxygen, while crucial for life, only makes up about 21% of the atmosphere. Therefore, nitrogen is the correct answer.

Option Analysis:

Option A: Oxygen is not the most abundant gas in the atmosphere, although it is essential for human respiration.
Option B: Nitrogen is the most abundant gas in the atmosphere, making up about 78% of the air.
Option C: This option is incorrect because only nitrogen is the most abundant gas, not oxygen.
Option D: This option is incorrect because nitrogen is indeed the most abundant gas in the atmosphere.

Mnemonic: N for Nitrogen, N for Number one.

765. Lime is sometimes applied to soil in order to

Correct Answer: Correct answer is: (A) Increase the alkalinity of the soil.

Exam Relevance: GRE, GMAT, Civil Services Exam, Agricultural Science Exams

Difficulty: Moderate

Concept notes: Lime is used to increase the pH level of soil, making it less acidic and more alkaline.

Common Mistakes: Students may confuse lime with substances that increase soil acidity, such as sulfur.

Explanations: Lime, typically calcium carbonate or calcium oxide, is applied to soil to neutralize acidity. This process raises the pH level, making the soil more alkaline. This is beneficial for plants that prefer a higher pH environment and can improve nutrient availability in overly acidic soils.

Option Analysis:

Option A: Correct. Lime increases soil alkalinity by raising the pH level.
Option B: Incorrect. Lime does not increase soil acidity; it decreases it.
Option C: Incorrect. Lime does not restore nitrates to the soil; it primarily affects pH.
Option D: Incorrect. Lime does not make the soil more porous; it affects soil chemistry.

Mnemonic: Lime lifts pH, not lowers.

766. Which of the following determined a person's job, social group, and marriage in early India? [Goa PSC Examination-2005]

Correct Answer: Correct answer is: (C) Caste system.

Exam Relevance: UPSC, SSC, PSC

Difficulty: Moderate

Concept notes: The caste system in early India was a hierarchical social structure that determined a person's job, social group, and marriage.

Common Mistakes: Students may confuse the caste system with other social structures or religious practices.

Explanations: The caste system in early India was a rigid social hierarchy that divided people into different groups based on their birth. These groups, known as castes, determined a person's occupation, social status, and even whom they could marry. This system was deeply ingrained in Indian society and had a profound impact on the lives of individuals.

Option Analysis:

Option A: Ahimsa is the principle of non-violence in Hinduism, Buddhism, and Jainism, not a social structure.
Option B: British colonial rule came much later and did not determine job, social group, and marriage in early India.
Option C: The caste system was the social structure that determined a person's job, social group, and marriage in early India.
Option D: The Eightfold Path is a concept in Buddhism, not a social structure.

Mnemonic: Caste: Categorizes, Assigns, Socially, Traditionally

767. Who was the first Test centurion in Indian Cricket? [General Knowledge for Indian Revenue Service (IRS-IT) Examination-2000]

Correct Answer: Correct answer is: (C) Lala Amarnath.

Exam Relevance: Civil Services Exam, UPSC, IAS, IRS

Difficulty: Moderate

Concept notes: Lala Amarnath was the first Indian cricketer to score a century in Test cricket.

Common Mistakes: Students may confuse the first Indian Test centurion with other early Indian cricket legends.

Explanations: Lala Amarnath scored his first Test century against England in 1933, making him the first Indian cricketer to achieve this milestone in Test cricket. This historical fact is significant in the context of Indian cricket's early years and its development on the international stage.

Option Analysis:

Option A: Vinu Mankad was a notable Indian cricketer but not the first Test centurion.
Option B: K. Naidu was also a significant player but not the first to score a Test century.
Option C: Lala Amarnath was the first Indian cricketer to score a century in Test cricket.
Option D: Pankaj Roy was another early Indian cricketer but not the first Test centurion.

Mnemonic: Lala's Lead: Lala Amarnath Led Indian Test Centuries.

768. Which of the following 'key ratios' is monitored by the regulators to ensure that the bank can absorb a reasonable amount of loss and complies with statutory Capital Requirements? [General Knowledge for Haryana School Selection Teachers Board Examination-1980]

Correct Answer: Correct answer is: (A) Capital Adequacy Ratio (CAR).

Exam Relevance: Banking Exams, Financial Regulatory Exams, Competitive Exams

Difficulty: Moderate

Concept notes: The Capital Adequacy Ratio (CAR) is a key financial ratio used by regulators to ensure that banks have enough capital to cover potential losses and meet statutory requirements.

Common Mistakes: Students may confuse the Capital Adequacy Ratio with other financial ratios such as the Credit to Deposit Ratio or Cost to Income Ratio, which are not directly related to capital adequacy.

Explanations: The Capital Adequacy Ratio (CAR) is monitored by regulators to ensure that banks have sufficient capital to absorb losses and comply with statutory capital requirements. This ratio is crucial for maintaining the stability and solvency of banks. The other ratios mentioned, such as the Credit to Deposit Ratio and Cost to Income Ratio, are important for other aspects of bank performance but do not directly address capital adequacy.

Option Analysis:

Option A: Correct. The Capital Adequacy Ratio (CAR) is the key ratio monitored by regulators to ensure banks can absorb losses and comply with statutory capital requirements.
Option B: Incorrect. The Credit to Deposit Ratio (CD Ratio) measures the proportion of a bank's loans to its deposits and is not directly related to capital adequacy.
Option C: Incorrect. This option is not applicable as the correct answer is provided in the other options.
Option D: Incorrect. The Cost to Income Ratio (CIR) measures the efficiency of a bank's operations and is not related to capital adequacy.

769. Formic acid is produced by [General Knowledge for SSC JE Examination-2011]

Correct Answer: Correct answer is: (C) Red ants.

Exam Relevance: SSC JE, UPSC, Civil Services

Difficulty: Easy

Concept notes: Red ants produce formic acid, which is a key component of their defense mechanism.

Common Mistakes: Students may confuse the type of insect that produces formic acid, as other insects like white ants and cockroaches are also known for their chemical defenses.

Explanations: Red ants produce formic acid as part of their defense mechanism. This acid is stored in their bodies and can be released when the ants feel threatened. Formic acid is a simple carboxylic acid and is the primary component of the venom that red ants use to deter predators and other threats.

Option Analysis:

Option A: White ants do not produce formic acid; they are actually termites and have different defense mechanisms.
Option B: Cockroaches do not produce formic acid; they have other defensive mechanisms such as running away or secreting other chemicals.
Option C: Red ants produce formic acid as part of their defense mechanism.
Option D: Mosquitoes do not produce formic acid; they use other methods for defense and feeding.

Mnemonic: Red ants, acid spray, defense display.

770. Which are some environmental risks associated with energy? [Goa Police Examination-2002]

Correct Answer: Correct answer is: (D) All of the above.

Exam Relevance: UPSC, SSC, Banking Exams, Civil Services

Difficulty: Moderate

Concept notes: Environmental risks associated with energy production and usage include acid rain, nuclear spills, and oil spills. Each of these poses significant threats to the environment and human health.

Common Mistakes: Students may overlook the comprehensive nature of the question and choose only one or two options instead of recognizing that all listed risks are valid.

Explanations: Acid rain results from sulfur dioxide and nitrogen oxides released during the burning of fossil fuels, which can damage ecosystems and infrastructure. Nuclear spills, such as those from nuclear power plant accidents, can lead to radioactive contamination and long-term health risks. Oil spills, often from offshore drilling or tanker accidents, can devastate marine ecosystems and coastal communities. Therefore, all of these are valid environmental risks associated with energy.

Option Analysis:

Option A: Acid rain is a valid environmental risk associated with energy production, particularly from coal and oil combustion.
Option B: Nuclear spills are a significant environmental risk, especially from nuclear power plant accidents.
Option C: Oil spills are a major environmental risk, often resulting from offshore drilling or tanker accidents.
Option D: This option correctly identifies that all the listed environmental risks are associated with energy production and usage.

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General knowledge MCQ - Set 77

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