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CBSE Class 10 Answered

In electric motor, why electromagnets are preferred over pemanent magnets ?
Asked by | 05 Mar, 2008, 11:21: PM
Expert Answer

phy question

Answered by | 07 Mar, 2008, 08:47: PM
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CBSE 10 - Chemistry
         C5H8O2+         NaH+    HCl→____C5H12O2+         NaCl balancing the equation  
Asked by kashviS.shah | 14 Sep, 2022, 11:27: PM
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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.
Asked by jafferkhan55 | 14 Sep, 2022, 06:40: AM
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CBSE 10 - Chemistry
10 examples of enrichment of ore  
Asked by 83dimplejain29 | 01 Sep, 2022, 03:04: PM
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CBSE 10 - Chemistry
The chemical reaction between MnO2 and HCl is an example of?
Asked by ten.foundation | 29 Aug, 2022, 07:53: PM
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CBSE 10 - Chemistry
Mention the type of reaction that take place on heating lead nitrate crystal
Asked by Shadm4242 | 20 Aug, 2022, 12:35: PM
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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?
Asked by 9414612ji | 19 Aug, 2022, 08:25: AM
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CBSE 10 - Chemistry
solve this
Asked by Sunita | 21 Jul, 2022, 10:18: AM
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CBSE 10 - Chemistry
solve this
Asked by labheshvaidya | 20 Jul, 2022, 10:59: AM
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CBSE 10 - Chemistry
How to Identify the solid liquid gaseous and aqueous states
Asked by ansheera3236 | 11 Jul, 2022, 05:05: PM
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CBSE 10 - Chemistry
Balance the following equation—
Asked by saharupa28041 | 30 Jun, 2022, 11:29: PM
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