The most abundant element in the human body is
1). carbon
2). iron
3). nitrogen
4). oxygen
1. The blue colour of water in the sea is due to-
2. The major harmful gas emitted by automobile vehicles which causes air pollution is
3. Conversion of chemical energy into electrical energy occurs in
4. The chemical name of 'Hypo' commonly used in photography is
5. Which algorithm is used to decide the path to transfer the packets from source to destination?
6. Which of the following is riot a greenhouse gas
7. The element absorbed both in cation and anion form is
8. Which of the following is used as anaesthetics?
9. Which one of the following is radioactive ?
10. Which one of the following is used for dating very old objects of archaeological importance?