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CBSE Class 10 Answered

What kind of chage are the followig process - Physical or chemical ?
 
Passing electric current through copper rod ?
Asked by archita123 | 27 Apr, 2015, 08:40: PM
answered-by-expert Expert Answer
Most physical changes are reversible.
Passing electricity through copper wire is a physical change.
Answered by Vaibhav Chavan | 28 Apr, 2015, 10:23: AM

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CBSE 10 - Chemistry
how we get the result of NH3+ HCL =NH4CL
Asked by shoaibhakak41 | 18 Jan, 2023, 02:17: PM
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CBSE 10 - Chemistry
an iron metal compound 'Y', after decomposition changes into a solid brown substance and evolve a gas having characteristic odour of burning sulphur. Write the chemical reaction associated with this observation.
Asked by nehashekh291 | 03 Jan, 2023, 03:11: PM
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CBSE 10 - Chemistry
solve this
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Asked by Sunita | 21 Jul, 2022, 10:18: AM
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CBSE 10 - Chemistry
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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
State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed.
Asked by pachchigarkeyur | 08 Mar, 2022, 12:05: PM
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CBSE 10 - Chemistry
What are endothermic and exothermic reactions?
Asked by radhikaraut258 | 25 Feb, 2022, 09:07: AM
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CBSE 10 - Chemistry
what is chemical reaction
Asked by siwach.mukesh78 | 03 Nov, 2021, 08:48: AM
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CBSE 10 - Chemistry
Is corrosion both a chemical as well as physical change?
Asked by Trisha Gupta | 23 Sep, 2021, 01:57: PM
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CBSE 10 - Chemistry
what is chemical change
Asked by abhishek707356 | 10 Sep, 2021, 10:29: AM
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