নাইট্ৰিক অক্সাইডনাইট্ৰীকৰণ
নাইট্ৰিক এছিড (Assamese)
1. Nitric acid is the inorganic compound with the formula HNO3. It is a highly corrosive mineral acid. The compound is colorless, but samples tend to acquire a yellow cast over time due to decomposition into... from wikipedia.org