The battle tanks designed and developed by the Defence Research and Development Organization in collaboration with Heavy Vehicles Factory and Bharat Heavy Electricals Limited are

Arjun
Vijayanta
T-55 and T-72
All of the above

The correct answer is: A. Arjun

The Arjun MBT is a third-generation main battle tank (MBT) developed by India’s Defence Research and Development Organisation (DRDO) in collaboration with the Heavy Vehicles Factory (HVF) and Bharat Heavy Electricals Limited (BHEL). It was designed to replace the Indian Army’s aging fleet of Vijayanta tanks.

The Arjun was first unveiled in 1983 and entered service in 1994. It is armed with a 120 mm smoothbore gun, a coaxial 7.62 mm machine gun, and a roof-mounted 12.7 mm machine gun. It is also equipped with a variety of sensors and fire-control systems.

The Arjun has been deployed in combat in the Kargil War and the Indo-Pakistani standoff of 2019. It has been praised for its performance in both conflicts.

The Arjun is a highly capable tank and is considered to be one of the best in the world. It is a major achievement for India’s defence industry and has helped to boost the country’s self-reliance in defence matters.

The other options are incorrect because:

  • Option B, Vijayanta, is a second-generation main battle tank that was developed by India in the 1960s. It is no longer in service with the Indian Army.
  • Option C, T-55 and T-72, are Soviet-made main battle tanks that were imported by India in the 1970s and 1980s. They are no longer in service with the Indian Army.