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The correct answer is option 4.

Key Points Tangential acceleration:

• In a circular motion, the component of the acceleration directed along the tangent of the circle is called tangential acceleration. Tangential acceleration is responsible for changing the speed of the particle.

Centripetal acceleration:

• In a circular motion, the component of the acceleration directed along the radius of the circle is called centripetal acceleration. It is responsible for the change in direction of velocity. It is always variable because due to this acceleration, the direction of the particle changes continuously.

• A particle moving in a circle of radius r with constant speed V undergoes a centripetal (or radial) acceleration because the direction of V changes in time.

• The magnitude of the acceleration is given by a** = $\dfrac{V^2}{r}$**

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  Since the particle is moving at a constant speed, the tangential acceleration will be zero.

• A particle is moving along a circular path, so there will be centripetal acceleration and the centripetal acceleration always acts along the radius.

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The correct answer is Debendranath Tagore.

Key PointsTattwabodhini Sabha-:

• On 6 October 1839, Debendranath Tagore established Tattvaranjini Sabha which was shortly thereafter renamed the Tattwabodhini ('Truth-seekers') Sabha. Hence, option 2 is correct.
• Initially confined to immediate members of the Tagore family, in 2 years it mustered over 500 members.
• In 1840, Debendranath published a Bangla translation of the Katha Upanishad. A modern researcher describes Sabha's philosophy as modern middle-class (bourgeois) Vedanta.
• Among its first members were the "two giants of Hindu reformation and Bengal Renaissance, Akshay Kumar Datta "who in 1839 emerged from the life of an anonymous squalor-beset individual" and Ishwar Chandra Vidyasagar the "indigenous modernizer".

Additional Information

• The Brahmo Samaj was a monotheistic sect of Hinduism. The movement began through meetings of Bengalis in Calcutta in 1828. One of the leading figures was Raja Ram Mohan Roy.
• This group was known as the Brahmo Sabha. In 1831, Roy visited England as a reforming ambassador and died there in 1833.

The correct answer is the Governor.

Key Points

• The Governor of each State shall appoint a person who is qualified to be appointed a Judge of a High Court to be Advocate-General for the State. Hence, option 3 is correct.
• It shall be the duty of the Advocate-General to give advice to the Government of the State upon such legal matters,
• And to perform such other duties of a legal character, as may from time to time be referred or assigned to him by the Governor, and to discharge the functions conferred on him by or under this Constitution or any other law for the time being in force.
• The Advocate-General shall hold office during the pleasure of the Governor, and shall receive such remuneration as the Governor may determine.
• Article 165 of the constitution talks about the Advocate General of states.
• He is the highest law officer in the state.

Additional Information 

Chief Minister of the state: 

• Chief Minister of a state of India is the 'elected' head of the government and the executive authority lies with the Chief Minister.
• He is appointed by the respective State Governor.

President of India: 

• He is the supreme commander of the Indian armed forces.
• The qualifications to become a president are: 
• He should be a citizen of India,
• He must have completed 35 years of age.
• He must be qualified to become a member of Lok Sabha.
• He should not hold any office of profit under the Union or state government.

Governor of the state: 

• He is the constitutional head of the state.
• He is appointed by the president.
• He must have at least 35 years of age to become a governor.

Chief Justice of the high court:

• He is appointed by the President in consultation with the Chief justice of India as well as the Governor of the state concerned.

The correct answer is Sivasamudram.

Key Points

Bhavani Sagar-:

• Bhavanisagar Dam or Lower Bhavani Dam is located in Erode district, Tamil Nadu, India. The dam is constructed on the Bhavani river. It is one of the world's largest earthen dams.
• The purpose: Irrigation and Power

Sivasamudram-:

• Shivanasamudra Falls is a waterfall on the border of Malavalli taluk, Mandya district and Kollegala taluk, Chamarajanagara district of the state of Karnataka, India.
• It is situated along the river Kaveri, which forms here the boundary to the Chamarajanagara district and Mandya district.

Krishnaraja Sagar-:

• Krishna Raja Sagara, also popularly known as KRS, is a lake and the dam that creates it. They are close to the settlement of Krishna Raja Sagara in the Indian State of Karnataka.
• The construction of the Krishna Raja Sagar Dam, would provide drinking water and be a source of irrigation.

Bhakra Nangal-:

• Bhakra Nangal Dam is a concrete gravity dam on the Satluj River in Bhakra Village near Bilaspur in Bilaspur district, Himachal Pradesh in northern India.
• The dam forms the Gobind Sagar reservoir.
• The primary use of the Bhakra-Nangal dam is irrigation, and storing rainwater.
• The dam provides irrigation water to Haryana, Rajasthan, Gujarat and Himachal Pradesh.

Hence, Sivasamudram is a waterfall and not for irrigation purposes.

The correct answer is option 3.

Key Points(a)Hyun Tsang (629-645 AD)-

• Hiuen Tsang was a famous Chinese Buddhist monk.
• He came to India during the reign of Harshavardhana in the seventh century.
• The Chinese traveller Hieun Tsang visited India with the aim of acquiring Buddhist scripts.
• He lived in India for about fifteen years and recorded his experience in his book "Si-yu-ki".
• This book throws light on religion, customs, traditions, etc.

(b)I-sing (635-713 AD) -

• He was a Chinese traveller and Buddhist monk who came to India by sea via Sumatra in 675 AD.
• He stayed at "Nalanda University" for 10 years.
• He read the texts of Sanskrit and Buddhism from the famous Acharyas there.
• He wrote his famous treatise, "Description of Buddhism prevalent in India and Malay Archipelago" In 691 AD.​

(c)Fahien (399 A.D.-412 A.D.) -

• India had a period of "Chandragupta" of the Gupta Dynasty at the time of Fahyan's visit.
• They reached India in 402 AD on foot via Central Asia, (Silk Route) Peshawar.
• The purpose of Fahyan's visit to India was to find Buddhist manuscripts and Buddhist memories.
• In 414 AD, he wrote the account of his journey under the name of the "Records of the Buddhist States", which are known today as "Fahyan's Tours".

(d)Megasthenes(350-290 BCE)-:

• Megasthenes visited India sometime between circa 302 BCE and 298 BCE.
• Megasthenes was an ancient Greek historian, diplomat, and Indian ethnographer.
• He was an ambassador of Seleucus Nicator I, in the court of Chandragupta Maurya.
• Megasthenes compiled information about India in the book Indika/Indica, which is now a lost work and only survives in quotes quoted by later writers in their books.

Hence, The correct order is (d), (c), (a), (b)

Additional InformationIbn Battuta-:

• Ibn Battuta (l. 1304-1368/69) was a Moroccan explorer from Tangier whose expeditions took him further than any other traveller of his time and resulted in his famous work, The Rihla of Ibn Battuta.
• Scholar Douglas Bullis notes that “Rihla” is not the book's title, but the genre, Rihla being Arabic for journey and a Rihla, travel literature.

The correct answer is Megasthenes.

Key Points

• Megasthenes, a Greek ambassador to ancient India, wrote in his book "Indica" that there were no slaves in India during his time in the 4^th century. Hence, option 3 is correct.
• Megasthenes visited India sometime between circa 302 BCE and 298 BCE.
• Megasthenes was an ancient Greek historian, diplomat, and Indian ethnographer.
• He was an ambassador of Seleucus Nicator I, in the court of Chandragupta Maurya.

The correct answer is India.

Key Points

• India won its maiden Thomas Cup title on 15 May 2022, beating 14-time champion Indonesia 3-0 in the final in Bangkok. Hence, option 2 is correct.
• World championships bronze medallist Lakshya Sen defeated Indonesia's Anthony Sinisuka Ginting 8-21, 21-17, 21-16 in the first men's singles to give India a 1-0 lead.
• India had previously reached the semifinals of the Thomas Cup in 1952, 1955, and 1979.

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Additional Information

• The Thomas Cup, sometimes called the World Men's Team Championships, is an international badminton competition among teams representing member nations of the Badminton World Federation (BWF).
• The championships have been conducted every two years since 1982.
• The Uber Cup (first held in 1956–1957) is the world women's team championship.

The correct answer is Victoria.

Key Points

• The Australian state of Victoria will host the 2026 Commonwealth Games. Hence, option 1 is correct.
• The 2026 Games will be held in four regional hubs in the towns of Geelong, Ballarat, Bendigo, and Gippsland.
• The state has confirmed 16 sports for the Games so far, including aquatics, cycling, and Twenty20 cricket.
• The 2022 Commonwealth Games are due to be held in Birmingham, England, from July 28 to August 8, 2022.

Additional Information

• It will be the sixth time that Australia has staged the Commonwealth Games and the second time in Victoria after Melbourne hosted the 2006 event.
• The opening ceremony will be held at Australia's largest sports stadium, the Melbourne Cricket Ground, which can hold more than 100,000 spectators.
• The Games, held every four years, attract more than 4,000 athletes from the 54 nations of the Commonwealth, almost all of whom are former territories of the British Empire.

The correct answer is Antiochus II Theos.

Key Points

• The Greek king Antiochus ("the Yona king named Antiyoga" in the text of the Edicts) is also named as a recipient of Ashoka's generosity, together with the other kings neighbouring him.
• The Greek king of Syria mentioned in the Asokan edict was Antiochus II Theos. Hence, option 1 is correct.
• Antiochus II Theos was the third ruler of the Seleucid Empire.
• The seleucid empire was one of the Hellenistic kingdoms that emerged after the death of Alexander.
• According to the edict, Antiochus II Theos sent an ambassador to Ashoka's court to establish friendly relations and exchange gifts.
• Antiochus II Theos was a Greek king of the Hellenistic Seleucid Empire who reigned from 261 to 246 BC.
• Antiochus II was a forceful personality who in his lifetime largely succeeded to hold the sprawling Seleucid realm intact.

The correct answer is Zymase.

Key Points

• Zymase is an enzyme complex that catalyzes the fermentation of sugar into ethanol and carbon dioxide. It occurs naturally in yeasts. Hence, option 2 is correct.
• Zymase activity varies among yeast strains
• Zymase was first isolated from the yeast cell in 1897 by a German chemist named Eduard Buchner who fermented sugar in the laboratory without living cells, leading to the 1907 Nobel Prize in Chemistry.
• Zymase is also the brand name of the generic enzyme mixture pancrelipase, a dietary supplement containing the enzymes amylase, peptidase, and lipase.
• It is sold to help digestion in people who do not produce enough of their own digestive enzymes.

Additional Information

• Amylase is an enzyme, or special protein, that helps you digest carbohydrates. Most of the amylase in your body is made by your pancreas and salivary glands. A small amount of amylase in your blood and urine is normal.
• Invertase is an enzyme that is widely distributed among plants and microorganisms and that catalyzes the hydrolysis of the disaccharide sucrose into glucose and fructose.
• Galactose sometimes abbreviated Gal is a monosaccharide sugar that is about as sweet as glucose and about 65% as sweet as sucrose. It is an aldohexose and a C-4 epimer of glucose.