Quiz1:chapter2 chemical analysis

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Quiz1:chapter2 <a href="https://gogoacademy.net/science-for-primary-4th-final-revision-for-primary-4/">chemical</a> analysis (dil. HCl )group

 <a href="https://gogoacademy.net/science-for-primary-4th-final-revision-for-primary-4/">chemical</a> analysis , the types of <a href="https://gogoacademy.net/science-for-primary-4th-final-revision-for-primary-4/">chemical</a> analysis ,qualitative 

analysis and 

analysis quantitative  

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<a href="https://gogoacademy.net/science-for-primary-4th-final-revision-for-primary-4/">chemical</a> analysis is useful in etraction iron from its ores because it ….

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Analysis of inorganic compounds included detection of ……

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To identify <a href="https://gogoacademy.net/science-for-primary-4th-final-revision-for-primary-4/">chemical</a> formula of a compound we should identify ……

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To identify a substance by measuring its molar <a href="https://gogoacademy.net/science-prep-1-final-revision/">mass</a> or melting point  it should be …

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    The most stable acid is ….

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7)The most stable acid is ….

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Dil. HCl  can detect all the following except ….

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Anion (A) from dil. HCl groups ……

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Acid form which  nitrate ion is derived from is ….

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Dil. HCl is used to detect CO32-  because …

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If A=K2CO3 , B=CaCO3 and C=(NH4)2CO3

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Ca(HCO3)2  and Al(HCO3)3 are two salts :

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Which of the following pairs of ions forms ppt. when mixed with a dilute aqueous medium ?

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All carbonate of  Na+ ,Mg2+, Ca2+ are soluble in ….

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All bicarbonate of  Na+ ,Mg2+, Ca2+ are soluble in ….

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which of the following may give a white ppt. 

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By adding dil. HCl to salts of unstable acids it can replace them in the form of …..

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All of thes unstable acids replaced by dil. HCl  then decoplosed except …

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By adding dil. HCl to ……… salt it gives a bad smell gas

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By adding dil. HCl to ……… salt it gives gas turbid lime water

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By adding dil. HCl to ……… salt it gives  an irritating smell gas

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By adding dil. HCl to a solid ……… salt  it gives  colorless gas turns into reddish brown gas at the mouth of the tube

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By adding MgSO4 to ……… salts solutions it gives  white ppt on cold

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By adding MgSO4 to ……… salts solutions it gives  white ppt after heating

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By adding AgNO3 to ……… salt solutions it gives  black ppt directly

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By adding AgNO3 to ……… salt solutions it gives  balck ppt after heating

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By adding I2 solution to ……… salt solutions it removes the brown color of I2

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By adding acidified KmnO4 solution to ……… salt solutions it removes the brown color of I2

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By adding AgNO3 to ……… salt solutions it gives  white ppt. that turns into balck ppt after heating

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By adding dil. HCl  to ……… solid salt  it gives  irritating smell gas and a yellow ppt of an element

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By adding dil. HCl  to ……… solid salt  it gives  irritating smell gas ,and changes a pape wet with acidified potsium dicromate from orange to green yellow ppt of an element

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