______ is used for making chemical apparatus like beakers, flasks etc.
1). Potash glass
2). Hard glass
3). Soda glass
4). Jena glass
2. Chemical name of bleaching powder is
4. The gas which turns into liquid at the lowest temperature among the following is
5. The major harmful gas emitted by automobile vehicles which causes air pollution is
6. Fermentation is a type of _____ _______ process .
7. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is
9. The fundamental particles present in the nucleus of an atom are