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Metals And Non Metals Free Doubts and Solutions

CBSE - X - Chemistry - Metals and Non Metals

Madam , In topper learning video , the video madam told that k & Na found in helite , sulphate and carbonate in environment . BUT K & Na are reactive in water .. then how sodium helite or sulphate or carbonate found in water ? They should be burn .

Asked by sucharitasahoo1 29th August 2017, 6:51 PM
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CBSE - X - Chemistry - Metals and Non Metals

Sir , m not able to understand what is nascent oxygen ? And what do you mean by decomposition of acids ? If others acids are oxidizing agent then why then liberate H2 ?

Asked by sucharitasahoo1 28th August 2017, 6:25 PM
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CBSE - X - Chemistry - Metals and Non Metals

Sir , m not able to understand what is nascent oxygen ? And what do you mean by decomposition of acids ? If others acids are oxidizing agent then why then liberate H2 ?

Asked by sucharitasahoo1 28th August 2017, 6:25 PM
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CBSE - X - Chemistry - Metals and Non Metals

But sir zinc have 3 also as a valency

Asked by shriya.pandey182 9th August 2017, 9:34 PM
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CBSE - X - Chemistry - Metals and Non Metals

does metal oxide+non metal oxide give salt +water

Asked by afreensyed13 19th September 2016, 3:21 PM
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CBSE - X - Chemistry - Metals and Non Metals

Why NaCl does not exist as molecules but aggregates of oppositely charged ions ?

Asked by rathee95abh 18th September 2015, 9:44 AM
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CBSE - X - Chemistry - Metals and Non Metals

Q. Why gangue has to be removed before extraction of metals ?

Asked by debaratib24 14th August 2015, 9:05 PM
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CBSE - X - Chemistry - Metals and Non Metals

Iron does not burn on heating but iron fillings burn vigorously when sprinkled in the flame of burner.Why?

Asked by SINDHUJA SRIVASTAVA 3rd August 2015, 8:56 PM
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CBSE - X - Chemistry - Metals and Non Metals

I dont know the chapter name exactly
 
Why do fire flies glow at night?

Asked by prabhatsahrawat28 16th June 2015, 9:46 AM
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CBSE - X - Chemistry - Metals and Non Metals

Why are photographic films packed in light proof wrappers ?

Asked by prabhatsahrawat28 13th June 2015, 9:32 AM
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