Read the following passage and answer the questions-

Our visit to the National War Memorial began with our teacher explaining that even after independence, India has had to fight many wars to protect itself, and the freedom and security we enjoy today is because of the many brave men and women who have served in the Indian Armed Forces over decades. Sadly, she said, war always takes its toll, and therefore, many brave soldiers have had to sacrifice their lives for the country even after our independence in 1947. This is what makes monuments like the National War Memorial extremely important so that we should never forget the cost of freedom. We are aware, always, of the pain and horrors of war. We learnt that each brick of the memorial is called a tablet, and it bears the names of soldiers who fought for India and made the supreme sacrifice in different wars from 1947 till date, including the Indo-China conflict of 1962, the Indo-Pak Wars in 1965 & 1971 and the Kargil War in 1999. There are 29,000 tablets on which more than 26,000 names of fallen soldiers have been etched. It was heartening to know that our government has recognised the sacrifice of brave soldiers. Our teacher told us about the 21 bravehearts who were awarded the Param Vir Chakra (PVC), India’s highest wartime gallantry medal, for their service to the nation. She also told us about Maha Vir Chakra (MVC), Kirti Chakra (KC), Vir Chakra (VrC) and Shaurya Chakra (SC).