Which of the following acids is called the king of the acids?
1). Carbonic acid
2). Phosphoric acid
3). Nitric acid
4). Sulphuric acid
2. The major constituent of air is
3. Philosopher’s wool is chemically known as ________.
4. Who suggested that most of the mass of the atom is located in the nucleus?
5. Petroleum consists of a mixture of
6. Schwann cells and nodes of Ranvier are found in