General knowledge MCQ – Change your future

291. Which one of the following is the composition of fuse? [IBPS Clerk Examination-2001]

Correct Answer: Correct answer is: (D) Lead and Tin.

Exam Relevance: IBPS Clerk, SSC CGL, RRB NTPC

Difficulty: Easy

Concept notes: Fuses are safety devices that protect electrical circuits from overcurrent. They are typically made of materials that melt at a specific temperature to break the circuit when excessive current flows through them.

Common Mistakes: Students may confuse the composition of fuses with other electrical components or materials that are not commonly used in fuse manufacturing.

Explanations: Fuses are commonly made from a combination of lead and tin. This combination is chosen because it has a low melting point, which allows the fuse to melt and break the circuit when the current exceeds a safe level. The other options, such as copper and zinc, copper and lead, or zinc and lead, are not typically used in fuse composition due to their higher melting points or other properties that do not suit the purpose of a fuse.

Option Analysis:

Option A: Copper and Zinc are not typically used in fuse composition due to their higher melting points and other properties unsuitable for fuses.
Option B: Copper and Lead are not commonly used together in fuses because copper has a higher melting point and is not ideal for fuse applications.
Option C: Zinc and Lead are not typically used together in fuses because zinc has a higher melting point and is not suitable for fuse applications.
Option D: Lead and Tin are the correct materials used in fuse composition due to their low melting points and suitability for breaking circuits under overcurrent conditions.

292. Who were the Aryans? [National Council for Research Education Training and (NCERT) Examination-2016]

Correct Answer: Correct answer is: (C) Nomads, warriors, and cattle herders.

Exam Relevance: UPSC, SSC, Civil Services

Difficulty: Moderate

Concept notes: The Aryans were a group of people who migrated into the Indian subcontinent around 1500 BCE. They were known for their nomadic lifestyle, warrior culture, and cattle herding.

Common Mistakes: Students may mistakenly believe that Aryans were a specific group of priests or gods, rather than a broader cultural group.

Explanations: The Aryans were a nomadic people who moved across the Eurasian steppes and eventually settled in the Indian subcontinent. They were known for their warrior culture and their reliance on cattle herding. This lifestyle is consistent with the description of nomads, warriors, and cattle herders.

Option Analysis:

Option A: This option is incorrect because "Arya" is not a place, and the term "Aryans" refers to a cultural group, not a specific location.
Option B: This option is incorrect because while the Aryans had priests, they were not exclusively priests.
Option C: This option is correct because the Aryans were known for their nomadic lifestyle, warrior culture, and cattle herding.
Option D: This option is incorrect because the Aryans were not gods but a cultural group of people.

Mnemonic: Aryans: NWC (Nomads, Warriors, Cattle herders)

293. India's national bird is ..... [West Bengal Police Examination-2011]

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

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

Difficulty: Very Easy

Concept notes: The peacock is the national bird of India.

Common Mistakes: Students may confuse the national bird with other common birds like the vulture or hen.

Explanations: The peacock is the national bird of India due to its cultural and religious significance. It is a symbol of grace, joy, and beauty in Indian culture.

Option Analysis:

Option A: Hen is not the national bird of India.
Option B: Vulture is not the national bird of India.
Option C: Peacock is the national bird of India.
Option D: Duck is not the national bird of India.

Mnemonic: P for Peacock, P for Pride.

294. Pick out the scalar quantity [BPSC Examination-2005]

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

Exam Relevance: BPSC, UPSC, SSC, GATE

Difficulty: Easy

Concept notes: Pressure is a scalar quantity because it has magnitude but no direction.

Common Mistakes: Students often confuse scalar and vector quantities. Force, velocity, and acceleration are vector quantities as they have both magnitude and direction.

Explanations: Pressure is defined as force per unit area and is represented by a single numerical value without any direction. Therefore, it is a scalar quantity.

Option Analysis:

Option A: Force is a vector quantity as it has both magnitude and direction.
Option B: Pressure is a scalar quantity as it has only magnitude and no direction.
Option C: Velocity is a vector quantity as it has both magnitude and direction.
Option D: Acceleration is a vector quantity as it has both magnitude and direction.

295. The Delhi General who successfully advanced up to Madurai was [Assam PSC Examination-1989]

Correct Answer: Correct answer is: (C) Malik Kafur.

Exam Relevance: UPSC, SSC, State PSC

Difficulty: Moderate

Concept notes: Malik Kafur was a prominent general in the Delhi Sultanate who led military campaigns in South India, including an expedition to Madurai.

Common Mistakes: Students may confuse Malik Kafur with other Delhi Sultanate generals who also conducted military campaigns in South India.

Explanations: Malik Kafur, a general under Alauddin Khilji, led a successful military campaign in South India, which included the capture of Madurai in 1311. This campaign was part of the broader expansion of the Delhi Sultanate into the southern regions of the Indian subcontinent.

Option Analysis:

Option A: Khizr Khan was a governor of Multan and later became the founder of the Sayyid dynasty, but he did not advance to Madurai.
Option B: Muhammad Ghori was a prominent ruler of the Ghurid Empire and led campaigns in northern India, but he did not advance to Madurai.
Option C: Malik Kafur successfully led the campaign to Madurai under Alauddin Khilji.
Option D: Muhammad bin Tughlaq was a sultan of the Tughlaq dynasty but did not lead a campaign to Madurai.

Mnemonic: Kafur to Madurai, South India's capture.

296. Which is the biggest Indian state? [Assam PSC Examination-2010]

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

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

Difficulty: Easy

Concept notes: Rajasthan is the largest state in India by area.

Common Mistakes: Students may confuse the largest state by population with the largest by area.

Explanations: Rajasthan is the largest state in India by area, covering approximately 342,239 square kilometers. This makes it larger than other states like Uttar Pradesh, Madhya Pradesh, and Maharashtra.

Option Analysis:

Option A: Uttar Pradesh is the most populous state but not the largest by area.
Option B: Madhya Pradesh is a large state but not the largest by area.
Option C: Maharashtra is a populous state but not the largest by area.
Option D: Rajasthan is the largest state by area.

Mnemonic: Rajasthan, R for Largest.

297. Which among the following is a 'Public Sector Bank' in India? [Haryana Forest Department Examination-1999]

Correct Answer: Correct answer is: (A) Dena Bank.

Exam Relevance: SSC, UPSC, Banking Exams, State PSC

Difficulty: Easy

Concept notes: Dena Bank is a public sector bank in India, which means it is owned and operated by the government.

Common Mistakes: Students may confuse public sector banks with private sector banks or foreign banks.

Explanations: Dena Bank is a public sector bank because it is owned and operated by the government of India. Public sector banks are those in which the government holds a majority stake. Dena Bank was nationalized in 1969, making it a public sector bank.

Option Analysis:

Option A: Dena Bank is a public sector bank.
Option B: IndusInd Bank is a private sector bank.
Option C: Karnataka Bank is a private sector bank.
Option D: ING Vysya Bank is a private sector bank.

Mnemonic: D for Dena, D for Government (Dena = Government-owned)

298. A tree from which strychnine is obtained: [UPSC Examination-2009]

Correct Answer: Correct answer is: (B) Kuchla Tree.

Exam Relevance: UPSC, Civil Services, IAS, Competitive Exams

Difficulty: Moderate

Concept notes: Strychnine is a highly toxic alkaloid that is derived from the seeds of the Kuchla tree, also known as the Strychnine tree (Strychnos nux-vomica).

Common Mistakes: Students may confuse the Kuchla tree with other trees that have medicinal or toxic properties.

Explanations: Strychnine is obtained from the seeds of the Kuchla tree, which is scientifically known as Strychnos nux-vomica. This tree is native to parts of South and Southeast Asia and is known for the strychnine content in its seeds, which has been used both medicinally and as a poison.

Option Analysis:

Option A: Cuchla tree is not a recognized term for the tree from which strychnine is obtained.
Option B: Kuchla Tree is the correct term for the tree from which strychnine is obtained.
Option C: Ginkgo Tree is not related to the production of strychnine.
Option D: Chilean Pine Tree is not associated with the production of strychnine.

Mnemonic: Kuchla keeps the key to strychnine.

299. What is scientific name of "Brinjal"? [CDS Examination-2016]

Correct Answer: Correct answer is: (B) Solanum melongena.

Exam Relevance: CDS Examination, UPSC, SSC

Difficulty: Easy

Concept notes: The scientific name for brinjal, also known as eggplant, is Solanum melongena.

Common Mistakes: Students may confuse brinjal with other vegetables in the Solanaceae family, such as tomatoes or peppers.

Explanations: Brinjal, or eggplant, belongs to the genus Solanum and the species melongena. This scientific name is universally recognized and used in botanical and agricultural contexts.

Option Analysis:

Option A: Daucas carota is the scientific name for carrot, not brinjal.
Option B: Solanum melongena is the correct scientific name for brinjal.
Option C: Capsicum fruitscence is the scientific name for bell pepper, not brinjal.
Option D: Mangifera indica is the scientific name for mango, not brinjal.

Mnemonic: S.M. for Solanum melongena, think "S.M. Eggplant."

300. From 1906 to 1920, the role of Md. Ali Jinnah during freedom struggle of India was - [Karnataka High Court Examination-1984]

Correct Answer: Correct answer is: (A) Nationalist and Secular.

Exam Relevance: UPSC, SSC, State PSC

Difficulty: Moderate

Concept notes: During the early years of the Indian freedom struggle, Muhammad Ali Jinnah was known for his nationalist and secular views.

Common Mistakes: Students often confuse the early and later phases of Jinnah's political career, mistaking his later separatist stance for his earlier nationalist views.

Explanations: From 1906 to 1920, Muhammad Ali Jinnah was a prominent nationalist and secular leader. He was a member of the Indian National Congress and worked alongside leaders like Motilal Nehru and Jawaharlal Nehru. Jinnah advocated for Hindu-Muslim unity and was against the partition of India. His early political career was marked by his commitment to a united and secular India, which aligns with the nationalist and secular stance described in Option A.

Option Analysis:

Option A: Correct. Jinnah was a nationalist and secular leader during this period.
Option B: Incorrect. Jinnah's separatist stance came later, after 1920.
Option C: Incorrect. Jinnah was not known for fundamentalist views during this period.
Option D: Incorrect. While Jinnah was nationalist, the term "secular" is also important to describe his early political views.

Mnemonic: N-S: Nationalist and Secular

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