Phosphorus is kept in water because
A). Its ignition temperature is very high
B). Its ignition temperature is very low
C). Its critical temperature is high
D). Its critical temperature is low
Its ignition temperature is very low
White phosphorus is highly reactive, and spontaneously ignites at about 30°C in moist air. It is usually stored under water, to prevent exposure to the air. It is also extremely toxic, even in very small quantities.
1. The antiseptic compound present in dettol is
2. Which of the following imparts deep blue colour to glass
3. The main constituent of biogas is
4. Total number of halogen elements found in the periodic table is
5. Which of the following is the petroleum wax
6. The Chairman of the Drafting Committee of the Constituent Assembly of India was
7. The oil used in the froth floatation process is
8. Hamburger effect is otherwise known as–
9. Question 14.8:What are the harmful effects of photochemical smog and how can they be controlled?
10. The polymerisation of which of the following is used in manufacturing of polythene in industry ?