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CBSE Class 10 Answered

What happens to the particles of an element when the body gets charged?
Asked by | 06 Mar, 2008, 01:28: PM
Expert Answer

query not clear

Answered by | 07 Mar, 2008, 08:45: PM
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CBSE 10 - Chemistry
         C5H8O2+         NaH+    HCl→____C5H12O2+         NaCl balancing the equation  
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CBSE 10 - Chemistry
Hi sir, Good evening  I have one doubt regarding to Hybridisation. In the hybridisation phenomenon, only the central atom's orbitals get hybridized and form hybrid orbitals then what about the surrounding atom's orbitals they won't get hybridized. For example in a BF3 molecule what about Fluorine hybridization and in a CO2 molecule what about the oxygen atom's orbital hybridization?  Please give clarity on this sir. Thank you sir.
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CBSE 10 - Chemistry
10 examples of enrichment of ore  
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CBSE 10 - Chemistry
The chemical reaction between MnO2 and HCl is an example of?
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CBSE 10 - Chemistry
Mention the type of reaction that take place on heating lead nitrate crystal
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CBSE 10 - Chemistry
1.A farmer has grown the petunia flowers on his field. He observed that the colour of the flowers started changing from blue to reddish purple. • What could be the possible reason for the change in colour? ⚫ What role is played by petunia flowers? • Suggest any two substances playing the same role in the field of agriculture. • What should be added by the farmer to treat the soil? What type of reaction will take place during treatment of soil? 2. A metal X reacts with HCI to liberate gas A but its compound Y releases gas B with HCI along with the salt CaCl,. Name the metal X. • Identify gas A and how will you test for it? ⚫ Name the salt Y and give its molecular formula. • Identify gas B and how will you test for it? What type of reaction takes place when X reacts with HCI? 3. A sodium salt 'A' is used while baking a cake. It makes the cake fluffy and spongy due to the release of gas 'B'. Identify salt 'A'. ⚫ What is the common name of this salt? ⚫ Which gas is released during the process? • How will you test for gas 'B'? 4. Anita's mother asked her to store the pickle in some bowl. She kept the pickle in a brass bowl. Was she right in doing that? Why or why not?
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CBSE 10 - Chemistry
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