CHEMISTRY Doubt Solver QUESTIONS

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(1) if NaCl doped with 10^-2 mol% GaCl3, then concentration of cationic vacancies,

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(2) if Aluminum Crystallises in cubic close packed unit structure. How many unit cells are there in 6.4 cm^3 (metallic radius of All is 10√2 pm)? 

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Doubt Question:

96g of Mg burnt in air in a closed chamber. On analysis,25% of Mg is converted into Oxide and remaining Mg into possible product. Residue is dissolved in H2O, neutralised by H2SO4. Number moles of H2SO4 required are/is________

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What are Oxo acids of Sulphur and their Structure based questions

Answer:

Sulphurous acid,

( H2SO3 ) Structure

Thio Sulphurous acid,

( H2S2O2 ) Structure

Di Sulphurous acid,

( H2S2O5 ) Structure

Dithionous acid,

( H2S2O4 ) Structure

Sulphuric acid,

( H2SO4 ) Structure

Thio sulphuric acid,

( H2S2O3 ) Structure

Pyro sulphuric acid,

( H2S2O7 ) Structure

Di Thionic acid,

( H2S2O6 ) Structure

Polythionic Acid,

( H2Sn+2O6 ) Structure

Peroxo mono sulphuric acid

( H2SO5 ) Structure

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Question:

Write Common names of following important Aromatic compounds?

Answer: 

(1) Anisole

(2) phenetole

(3) Xylene

(4) Toluene

(5) Cumene

(6) Pyridine

(7) Pyrrole

(8) Furan

(9) Thiophene

(10) Mesitylene

Question: Which of the following oxides will not react with NaOH 

(a) CaO

(b) SiO2

(c) BeO

(d) B2O3

Answer:  (a)

Explanation: 

SiO2 is Acidic oxide

BeO is Amphoteric Oxide

B2O3 is Acidic

CaO is Basic.

NaOH being Base,it will not react with Basic Oxides.

Doubt Question: 

The Products "A" and "B" of the below reaction sequence are 

 H-C=C-CH2-CH2-CO-CH3 --HgSO4 dil H2SO4-> A --EtONa/EtOH--> B

Answer: A,B,C&D

Solution:

Mechanism for option A

Mechanism for option B

Mechanism for option C

Mechanism for option D