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Why is white phosphorus kept immersed under water?

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प्रश्न

Why is white phosphorus kept immersed under water?

अति संक्षिप्त उत्तर
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उत्तर

White phosphorus is kept immersed in water because it spontaneously ignites when exposed to air. But it does not react with water.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १६६]

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लखमीर सिंह Chemistry [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 51. (b) | पृष्ठ १६६

संबंधित प्रश्‍न

.................... liberated when acetic acid reacts with sodium metal.
(a) Hydrogen
(b) Chlorine
(c) Oxygen
(d) Nitrogen


‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.


Write equations for the reactions of iron with steam. 


Write equations for the reactions of calcium and potassium with water.


What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.


Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).


What will happen if a strip of zinc is immersed in a solution of copper sulphate?


What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?


How would you show that silver is chemically less reactive than copper?


Complete and balance the following equation:

\[\ce{Na2O + H2O ->}\]


The white powder formed when magnesium ribbon burns in oxygen is of ______.


Write the equation for the reaction of Aluminium with dilute hydrochloric acid.

Name the products formed. Also indicate the physical states of all the substances involved.


Which non-metal has been placed in the reactivity series of metals?


An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na


Name a metal which does not react with cold as well as hot water but reacts with steam.


When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?


Calcium floats over water during the reaction with water. Give reason.  


Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

  1. Good thermal conductivity
  2. Good electrical conductivity
  3. Ductility
  4.  High melting point

Which of the following property is not responsible for copper to be used as electrical conduction wires?


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