Indian Cities and Places

Correct answer is (3). 

Kolkata was the first city in India to have an underground railway corridor - the Kolkata Metro, which started operations in 1984. This was the first underground mass transit system in the country, preceding Delhi's metro by nearly two decades.

The 9th Auto Expo was held at Pragati Maidan in New Delhi in January 2008. This is a major automotive show that has been held in New Delhi since its inception, making it the primary venue for such exhibitions in India.

 The Central Leather Research Institute is located at Chennai

 Calcutta - Amritsar are linked by Grand Trunk Highway.

Bangalore earned the 'Silicon Valley of India' nickname due to its concentration of IT companies and tech startups. The city's pleasant climate and educational institutions attracted global tech giants.

Bangalore houses Hindustan Aeronautics Limited (HAL), India's premier aircraft manufacturing establishment established in 1940. It has produced various aircraft including the Tejas fighter jet and trainer aircraft for the Indian Air Force. The other cities mentioned do not have major aircraft manufacturing facilities.

Panaji (Panjim) is the capital city of Goa, a state on India's west coast known for its beaches and Portuguese heritage. It serves as the administrative center of the state.

Thiruvananthapuram (Trivandrum) is the capital city of Kerala, located at the southern tip of India. It is the largest and most populous city in Kerala, serving as the state's administrative and political center.

Gangtok is the capital city of Sikkim, a northeastern state in India. Located in the Himalayan foothills, it serves as the political and administrative center of Sikkim.

Kavaratti is the capital of Lakshadweep, a union territory of India consisting of coral islands and atolls in the Arabian Sea. It is the most populated island and serves as the administrative headquarters.

Kolkata, West Bengal's capital city, has become India's first fully Wi-Fi enabled metro city. Reliance JIO is reportedly providing the services. So, the correct option is (2).

Correct option is (3).

Correct option is (2).

The GT (Grand Trunk) Express runs between New Delhi and Chennai, covering approximately 2,180 km. It is one of India's oldest and most prestigious train services, started in 1929.