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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

State Two Important Uses of Following Non-metals Uses of Nitrogen - Chemistry

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प्रश्न

State two important uses of following non-metals  

Uses of nitrogen  

टीपा लिहा

उत्तर

Uses of nitrogen :

  • It dilutes the activity of oxygen.
  • The compounds of nitrogen are of vital importance to plant for growth.
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पाठ 6: Metals and Non-metals - Additional questions 2

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 2 | Q 6.1

संबंधित प्रश्‍न

Give an example of a metal which is a liquid at room temperature.


Explain the meaning of malleable.


Can you store lemon pickle in an aluminium utensil? Explain.


Give the name and formulae of two acidic oxides.


 Name one non-metal which is stored under water.


Name the metal which is used in making thermometers.


Name a metal which is so soft that it can be cut with a knife.


Name the metals present in the following alloys  

Stainless steel   


Give four differences between metals and non-metals with reference to their:

  1. Melting point and boiling point
  2. The conductivity of heat and electricity
  3. Malleability
  4. Solubility 

Name a non-metal which is good conductor of electricity.  


Name:

a metal with low melting and boiling points


`Na _____ → Na^+`


Explain the term Minerals.


Which metal occurs as a sulphide also gives the name of their respective ore.


Which metal occurs as an oxide also gives the name of their respective ore.


Distinguish between the physical properties of metals and non-metals with reference to:

(a) lusture (b) malleability (c) ductility (d) tensile strength (e) sonority (f) conduction of heat and electricity (g) melting and boiling point (h) density.


State whether the statement given below is true or false. If false write the correct statement.

The chemical name of rust is iron [III] oxide.


The sound of one metal colliding with another makes a noise, this property is called as _______.


Non-metals form covalent chlorides because ____________.


Which of the following non-metals is a liquid?


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