Which of the following imparts deep blue colour to glass
1). Cobalt oxide
2). Cupric oxide
3). Ferrous oxide
4). Nickel oxide
2. Atoms of different elements have
3. Question 3.5:In terms of period and group where would you locate the element with Z =114?
4. Which of the following metals causes Itai-Itai disease ?
5. The number of g-molecule of oxygen in 6.02 x 1024 CO molecules is
6. The orientation of an atomic orbital is governed by
7. When Hydrogen starts burning in air it produces ?
8. If ice floating on water in a vessel melts, the water level in the vessel _______.
9. What is nature of pH of Milk?
10. Tear gas is :