The correct answer is d) 104th.

Explanation:

104th Amendment

The 104th Amendment to the Constitution of India, which came into effect in January 2020, abolished the provision of reserving two seats for the Anglo-Indian community in the Lok Sabha (House of the People) and State Legislative Assemblies. This reservation was originally provided under Article 331 and Article 333 of the Indian Constitution to ensure representation for the Anglo-Indian community. However, the government decided to discontinue this special provision, citing that the community is now well-integrated into Indian society and no longer requires reserved representation. Hence, the 104th Amendment is responsible for abolishing these reserved seats.

The correct answer is: d) Odometer

Explanation: An odometer is a device used in vehicles to measure the distance traveled. It records the total distance covered by the vehicle and is typically displayed on the dashboard.

– Ammeter: This measures electric current in a circuit, not distance.
– Speedometer: This measures the speed of the vehicle, not the distance.
– Chronometer: This is a precise timekeeping instrument, unrelated to measuring distance.

Thus, the correct answer is odometer, as it specifically measures the distance moved by the vehicle.

The correct answer is: d) August 10, 2020

Explanation: The undersea cable-based Chennai-Andaman and Nicobar Islands (CANI) Project was inaugurated and dedicated to the nation by Prime Minister Shri Narendra Modi on August 10, 2020. This project aimed to provide high-speed internet connectivity to the Andaman and Nicobar Islands, ensuring better communication facilities, improved e-governance, and enhanced opportunities for businesses and education in the region. The undersea optical fiber cable connects Chennai to Port Blair and other islands, significantly boosting digital connectivity in the area.

The correct answer is Option B: Bhaskar Varman.

Explanation: Bhaskar Varman was a prominent ruler of the Kamarupa kingdom (ancient Assam) during the 7th century. He was a contemporary of Harsha, the ruler of northern India. Bhaskar Varman is well-known for his alliance with Harsha, which was established through diplomatic relations. The Chinese traveler Xuanzang (Hiuen Tsang) also visited Bhaskar Varman’s court and documented his observations about the kingdom. Therefore, Bhaskar Varman ruled Assam during the time of Harsha.

The correct answer is: d) Hydrochloric acid.

Explanation: The stomach secretes hydrochloric acid (HCl) as part of the gastric juice. This acid plays a crucial role in digestion by creating an acidic environment in the stomach. It helps in breaking down food, activating digestive enzymes like pepsin, and killing harmful bacteria or pathogens that may enter the stomach with food.

Hence, the correct answer is hydrochloric acid.

Correct Answer: a) Silicon Valley

Explanation:

Technopolis

A technopolis refers to a region or area that is highly concentrated with technology-based industries, research institutions, and innovation hubs. It is characterized by a strong focus on technological development, innovation, and entrepreneurship. Silicon Valley, located in California, USA, is widely recognized as a technopolis because it is home to numerous technology companies, startups, and research centers. It has become a global hub for technological innovation and development.

On the other hand, cities like London, Paris, and Moscow are major urban centers but are not specifically known as technopolises in the same way Silicon Valley is.

The correct answer is Option C: i, ii, and iv.

Explanation:

Dalton’s atomic theory

Dalton’s atomic theory was a significant milestone in the development of modern chemistry. It successfully explained the following laws:

1. Law of Conservation of Mass: This law states that mass is neither created nor destroyed in a chemical reaction. Dalton’s theory explained this by proposing that atoms are indivisible and cannot be created or destroyed during chemical reactions. Instead, they are rearranged to form new substances.

2. Law of Constant Composition: This law states that a given compound always contains the same elements in the same proportion by mass. Dalton’s theory supported this by suggesting that compounds are formed by the combination of atoms of different elements in fixed ratios.

3. Law of Multiple Proportions: This law states that when two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other are in the ratio of small whole numbers. Dalton’s theory explained this by stating that atoms combine in simple whole-number ratios to form compounds.

However, Dalton’s atomic theory did not address or explain the Law of Radioactivity, as radioactivity was discovered much later (by Henri Becquerel in 1896) and involves the breakdown of atomic nuclei, which was beyond the scope of Dalton’s original theory.

Thus, the correct answer is Option C: i, ii, and iv.