Inorganic Chemistry Doubts

And D
In my opinion answer should be B, coz Ni+2 require higher amount of S-2 to get ppt. as it’s Ksp is higher. Answer given D.


Ans AB
Answer is given as AB. I have doubt in A.


Ans ZN OH2


Ans BC

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Ans(a)
Answer is given A. Why not AC?


Ans. (D)
Answer given D. Both here means “HCl as well as H2S” or “HCl and H2S together” by both ways answer not coming.

For second answer key is most probably wrong , whenever aqueous NH3 is given , elements will precipitate out as hydroxides so the elements whose hydroxides are gonna ppt due to NH3 is Aluminium and bismuth ( notable white flakes ) This is what I remember . Calcium hydroxide is soluble so it wont ppt.
For Potassium thiocyanate , Fe+3 ( ferric ) gives red colour

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no bro you are right ca+2 won’t ppt

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you’re right again

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For last one its given as ion that wont be ppt by either H2S or Hcl
Pb ppt by H2S
Cu ppt by HCl
Ag ppt by Hcl
Sn not ppt by either ( usually by hydroxides)

fe+3 gives red color KSCN

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i myself am not sure with the other questions bruv

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how A bro?

So2 is the gas with irritating smell
But h2s also smells like rotten eggs

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Yeah, that’s my doubt both H2S and SO2 have irritating smell.

From where did you guys study salt analysis??
Quantitative analysis comes in this only right?? (kjeldah’s method etc…)

We learnt kjedahl method and all in POC (practical organic chemistry )

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this poc as harish said

PS Sir :pray: :pray:

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Kjeldahl and Duma was taught to us in mole concept itself. Detection of elements in POC and estimation of elements in mole concept. Detection of functional groups also in POC.

Salt was taught in the coaching i joined.

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Ya bro. Disha PYQ has wrong answer. In Arihant, it’s given BC (said my friend).

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Before Christ?

Option B and C. :rofl:

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Then from where should i do POC and salt analysis???

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