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Asked/Added Questions From NCERT:


Question 1. Asked on :21 August 2019:11:04:19 PM

 At which the solid and liquid states of substances can exist together?

-Added by Akki chauhan Science » Is Matter Around Us Pure

Answer:

Master Purushottam

0 degree celcius

-Answered by Master Purushottam On 21 August 2019:11:25:29 PM


Question 2. Asked on :21 August 2019:11:01:33 PM

 Define condensation.

-Added by Akki chauhan Science » Is Matter Around Us Pure

Answer:

Master Purushottam

 The change of solid state into liquid state on cooling. this is called condensation

-Answered by Master Purushottam On 21 August 2019:11:27:27 PM


Question 3. Asked on :14 January 2019:05:43:06 PM

 How can we seprate a mixture of salt and Ammonium Chloride?

-Added by Himanshi Verma Chemistry » Is Matter Around Us Pure

Answer:

Master Purushottam
By the process of sublimation

-Answered by Master Purushottam On 24 August 2019:12:02:19 AM


Question 4. Asked on :12 January 2019:10:38:08 AM

What is meant by a substance?

-Added by Rohit Rajput Science » Is Matter Around Us Pure

Answer:

Master Purushottam
Mixtures are constituted by more than one kind of pure form of matter,known as a substance.

-Answered by Master Purushottam On 22 August 2019:09:09:20 PM


 

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