General knowledge MCQ – Change your future

171. What is the national animal of UAE [Goa PSC Examination-2012]

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

Exam Relevance: UPSC, PSC, SSC, Civil Services

Difficulty: Easy

Concept notes: The national animal of the United Arab Emirates (UAE) is the Oryx.

Common Mistakes: Students may confuse the national animal of the UAE with other animals such as the camel, which is also significant in the region.

Explanations: The Oryx, also known as the Arabian Oryx, is a species of antelope native to the Arabian Peninsula. It is a symbol of the UAE and is featured on the coat of arms of the country. The Oryx was chosen as the national animal due to its resilience and adaptability to the harsh desert environment, reflecting the spirit of the UAE.

Option Analysis:

Option A: Correct. The Oryx is the national animal of the UAE.
Option B: Incorrect. The camel is significant in the UAE but is not the national animal.
Option C: Incorrect. The tiger is not native to the UAE and is not the national animal.
Option D: Incorrect. The horse is not the national animal of the UAE.

Mnemonic: Oryx, O for Oryx, UAE's official.

172. When a moving bus stops suddenly, the passenger are pushed forward because of th [SSC JE Examination-1993]

Correct Answer: Correct answer is: (D) Inertia of the passengers.

Exam Relevance: SSC JE, GATE, GRE, GMAT

Difficulty: Easy

Concept notes: Inertia is the tendency of an object to resist changes in its state of motion. When a bus stops suddenly, the passengers continue to move forward due to their inertia.

Common Mistakes: Students may mistakenly think the bus's inertia is the cause, but inertia applies to the passengers, not the bus.

Explanations: Inertia is the property of matter that resists changes in its state of motion. When a moving bus stops suddenly, the passengers, due to their inertia, continue to move forward. This is because the passengers were initially in motion with the bus and resist the sudden change in motion. Therefore, the inertia of the passengers is the reason they are pushed forward.

Option Analysis:

Option A: The inertia of the bus does not cause the passengers to move forward. The bus stops, but the passengers continue moving due to their own inertia.
Option B: Friction between the passengers and the earth is not the cause. The forward motion is due to inertia, not friction.
Option C: Friction between the earth and the bus is irrelevant to the passengers' forward motion.
Option D: The inertia of the passengers is the correct explanation for why they are pushed forward when the bus stops suddenly.

Mnemonic: Inertia keeps you in motion, not the bus.

173. Cylindrical lens is used by a person suffering from: [General Knowledge for Jharkhand Police Examination-1983]

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

Exam Relevance: Jharkhand Police Examination, UPSC, SSC

Difficulty: Moderate

Concept notes: Astigmatism is a common eye condition where the cornea or lens is irregularly shaped, causing blurred vision. Cylindrical lenses are used to correct this condition by compensating for the irregular curvature of the eye.

Common Mistakes: Students often confuse cylindrical lenses with spherical lenses, which are used to correct myopia or hypermetropia.

Explanations: Astigmatism is caused by an irregular curvature of the cornea or lens, leading to distorted vision. Cylindrical lenses are specifically designed to correct this irregularity by providing different magnification in different meridians of the eye. This makes them the appropriate choice for individuals suffering from astigmatism.

Option Analysis:

Option A: Astigmatism is corrected using cylindrical lenses.
Option B: Myopia is corrected using concave lenses.
Option C: Hypermetropia is corrected using convex lenses.
Option D: Presbyopia is corrected using bifocal or progressive lenses.

Mnemonic: Cylindrical for Curvature Correction

174. My leaves open when the Sun rises and close at night. [Chhattisgarh Postal Circle Examination-2011]

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

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

Difficulty: Easy

Concept notes: Lotus leaves exhibit a unique behavior known as nyctinasty, where they open during the day and close at night.

Common Mistakes: Students may confuse the behavior of lotus leaves with other plants that have similar characteristics, such as sunflowers, which follow the sun but do not open and close their leaves.

Explanations: Lotus leaves open when the sun rises and close at night due to a mechanism called nyctinasty. This behavior is an adaptation that helps the plant regulate temperature and moisture. The leaves of the lotus plant are known to move in response to light and temperature changes, opening during the day to maximize photosynthesis and closing at night to conserve water and reduce transpiration.

Option Analysis:

Option A: Rose leaves do not exhibit the behavior of opening and closing with the sun.
Option B: Lotus leaves open when the sun rises and close at night due to nyctinasty.
Option C: Sunflowers follow the sun but do not open and close their leaves.
Option D: Tulip leaves do not exhibit the behavior of opening and closing with the sun.

Mnemonic: Lotus leaves open, close, day, night.

175. What were American's called who supported independence? [Armed Forces Headquarters Civil Services (AFHCS) Examination-2005]

Correct Answer: Correct answer is: (C) Patriots.

Exam Relevance: AFHCS, UPSC, GRE, GMAT

Difficulty: Easy

Concept notes: Patriots were American colonists who supported independence from British rule during the American Revolution.

Common Mistakes: Students may confuse Patriots with Loyalists, who supported British rule.

Explanations: Patriots were American colonists who supported independence from British rule during the American Revolution. They were also known as revolutionaries or rebels. The term "Patriots" reflects their commitment to the cause of American independence and their efforts to achieve it.

Option Analysis:

Option A: Tories were British loyalists who opposed American independence.
Option B: Separatists is not a term commonly used to describe those who supported American independence.
Option C: Patriots were American colonists who supported independence from British rule.
Option D: Loyalists were those who remained loyal to the British crown and opposed American independence.

Mnemonic: Patriots for Independence, Loyalists for Loyalty

176. "Abhinava Bharat" a secret society of revolutionaries, was organized by [General Knowledge for Maharashtra Excise Department Examination-1983]

Correct Answer: Correct answer is: (B) V.D. Savarkar.

Exam Relevance: UPSC, SSC, Maharashtra Excise Department Examination

Difficulty: Moderate

Concept notes: V.D. Savarkar organized "Abhinava Bharat," a secret society of revolutionaries, to fight against British colonial rule in India.

Common Mistakes: Students may confuse V.D. Savarkar with other revolutionaries like Khudiram Bose or Bhagat Singh, who were also involved in revolutionary activities.

Explanations: V.D. Savarkar, a prominent Indian revolutionary and political leader, organized "Abhinava Bharat" to promote revolutionary activities against British rule. This society aimed to mobilize and train revolutionaries to fight for India's independence. The other options, while also revolutionaries, did not organize this specific society.

Option Analysis:

Option A: Khudiram Bose was a revolutionary but did not organize "Abhinava Bharat."
Option B: V.D. Savarkar organized "Abhinava Bharat," a secret society of revolutionaries.
Option C: Prafulla Chaki was a revolutionary but did not organize "Abhinava Bharat."
Option D: Bhagat Singh was a revolutionary but did not organize "Abhinava Bharat."

Mnemonic: Savarkar Secret Society

177. Upon arrival at an ideal planet, humans would encase the alien world inside of a protective shell, this is called? [(PPS) Service Police Pondicherry Examination-2005]

Correct Answer: Correct answer is: (C) Shell World.

Exam Relevance: PPS, Competitive Science Exams, Space Engineering Exams

Difficulty: Moderate

Concept notes: A Shell World is a hypothetical megastructure that encases an entire planet within a protective shell.

Common Mistakes: Students may confuse Shell World with other space-related concepts like space mirrors or artificial magnetospheres.

Explanations: A Shell World is a concept in space engineering where a planet is enclosed within a protective shell. This shell can provide a controlled environment, protect the planet from external threats, and potentially allow for the modification of the planet's atmosphere and climate. The term "Shell World" directly refers to this encasement, making it the correct answer.

Option Analysis:

Option A: Interplanetary Contamination refers to the risk of biological contamination between planets, not a protective shell.
Option B: Space Mirrors are hypothetical structures used to reflect sunlight, not to encase a planet.
Option C: Shell World is the correct term for encasing a planet in a protective shell.
Option D: Artificial Magnetosphere is a concept related to creating a magnetic field around a planet, not encasing it in a shell.

Mnemonic: Shell World: "Shell" for encasing, "World" for planet.

178. A bat looks like a..... [Reserve Bank of India Examination-2021]

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

Exam Relevance: Reserve Bank of India Examination, UPSC, SSC

Difficulty: Easy

Concept notes: Bats are often compared to rats due to their small size, fur, and nocturnal habits.

Common Mistakes: Students might confuse bats with rabbits due to their similar size and fur, but bats have distinct features like wings and nocturnal behavior.

Explanations: Bats are mammals that are often compared to rats because of their small size, fur, and nocturnal habits. They are not typically compared to rabbits, which are diurnal and have different physical characteristics.

Option Analysis:

Option A: Correct. Bats are often compared to rats due to their small size and fur.
Option B: Incorrect. Bats are not typically compared to rabbits, which are diurnal and have different physical characteristics.
Option C: Incorrect. Bats are more similar to rats than rabbits.
Option D: Incorrect. Bats are often compared to rats, so this option is not correct.

Mnemonic: Bats are furry flyers, like rats, not rabbits.

179. Which of the following events happened last? [Andhra Pradesh Forest Examination-2008]

Correct Answer: Correct answer is: (C) Siddhartha Gautama gained insight into human suffering.

Exam Relevance: UPSC, SSC, Bank PO, State PSC

Difficulty: Moderate

Concept notes: The sequence of events in Siddhartha Gautama's life leading to his enlightenment is crucial for understanding the development of Buddhism.

Common Mistakes: Students may confuse the order of events, particularly the meditation under the tree and the insight into human suffering.

Explanations: Siddhartha Gautama first became aware of the sickness, death, and old age around him, which prompted him to leave his family's home. He then meditated under a tree, where he gained insight into human suffering. Therefore, gaining insight into human suffering happened last among the given options.

Option Analysis:

Option A: Siddhartha Gautama became aware of all the sickness/death/old age around him. This event happened first.
Option B: Siddhartha Gautama left his family's home. This event happened after becoming aware of the suffering around him.
Option C: Siddhartha Gautama gained insight into human suffering. This event happened last among the given options.
Option D: Siddhartha Gautama meditated underneath a tree. This event happened before gaining insight into human suffering.

Mnemonic: Awareness, Departure, Meditation, Insight (ADMI)

180. The most important stimulant present in tea leaves is [General Knowledge for IBPS PO Examination-1996]

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

Exam Relevance: IBPS PO, SSC CGL, UPSC

Difficulty: Easy

Concept notes: Caffeine is the primary stimulant found in tea leaves.

Common Mistakes: Students may confuse caffeine with other stimulants like theobromine, which is more commonly found in cocoa.

Explanations: Caffeine is the most important stimulant present in tea leaves. It is a central nervous system stimulant that can enhance alertness and reduce fatigue. The other options, such as phenylalanine, brucine, and theobromine, are not the primary stimulants found in tea leaves.

Option Analysis:

Option A: Caffeine is the correct answer as it is the primary stimulant in tea leaves.
Option B: Phenylalanine is an amino acid, not a stimulant.
Option C: Brucine is a toxic alkaloid found in certain plants, not in tea leaves.
Option D: Theobromine is a stimulant found in cocoa, not in tea leaves.

Mnemonic: Tea Time: T for Tea, T for Tonic (Caffeine)

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General knowledge MCQ - Set 18

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