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Subject: Chemistry, asked on 25/1/19

what is the nature of zinc oxide in this statement
zinc oxide reacts with dil hydrochloric acid to form salt and water
 

Subject: Chemistry, asked on 10/1/19

Why does no nitrogen,co2 and other gases act on a substance during a reaction even though they are present in the nature?

Subject: Chemistry, asked on 6/1/19

What is p block & s block in periodic table

Subject: Chemistry, asked on 19/8/18

Define catalyst, effervescence and isobars

Subject: Chemistry, asked on 9/8/18

pls answer no g

Subject: Chemistry, asked on 31/7/18

name the substance in which the following acids are present : ethanoic acid , tartaric acid

Subject: Chemistry, asked on 28/2/18

Cu+H2SO4=CuSO4+H2 is correct or not.

Subject: Chemistry, asked on 6/12/17

A chocolate brown solid when heated give a solid residue which is yellow in colour and a colourless gas. Red hot iron when introduced in the same gas gives a reddish brown solid. A yellow coloured solid burns with a blue flame when introduced in the same gas to give another colourless gas. The gas so obtained reacts with water to give colourless solution which turns blue litmus red.

Subject: Chemistry, asked on 3/12/17

How is petroleum as a resource contributing in strengthening the Economy of UAE

Subject: Chemistry, asked on 12/9/17

decomposition of copper (I) hydroxide

Subject: Chemistry, asked on 12/9/17

decomposition of lead IV hydroxide

Subject: Chemistry, asked on 12/9/17

decomposition of copper(I) nitrate

Subject: Chemistry, asked on 6/9/17

decomposition of Cu(NO3)2

Subject: Chemistry, asked on 6/9/17

decomposition of CuNO3

Subject: Chemistry, asked on 6/9/17

decomposition of Pb(No3)​4

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