JEE 2012 :: General Questions :: Chemistry

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The colour of light absorbed by an aqueous solution of  $CuSO_{4}$ is 

Answer:

Explanation:

The aqueous solution of $CuSO_{4}$consist of the complex$[Cu(H_{2}O)_{4}]^{2+}$ ion which adsorbs in the orange-red region and impart deep blue colouration to the solution.

The carboxyl functional group (-COOH) is present in 

Answer:

Explanation:

Structures of the various compounds are

As per IUPAC nomenclature, the name of the complex $[Co(H_{2}O)_{4}(NH_{3})_{2}]Cl_{3}$ is 

Answer:

Explanation:

First of all, the compound has a complex positive part "$[Co(H_{2}O)_{4}(NH_{3})_{2}]^{3+}"$ therefore, according to IUPAC conventions, the positive part will be named first. Secondly, in writing the name of the complex, ligands are named first in alphabetical order, irrespective of their charge, hence "ammine" will be written prior to "aqua".

The number of optically active products obtained from the complete ozonolysis of the given compound is

Answer:

Explanation:

Ozonolysis of the given triene occur as follows

Since none of the above dials is chiral. no optically active product is obtained

A compound $M_{p} X_{q}$, has a cubic close packing (ccp) arrangement of X. Its unit cell structure is shown below. The empirical formula of the compound is

Answer:

Explanation:

Contribution of atom from the edge centre is 1/4.Therefore, number of 

$M=\frac{1}{4} \times 4$  (from edge centre )+1(from body centre)=2

 Number of X= $\frac{1}{8} \times 8$ (from corners)+$\frac{1}{2} \times 6$( from the  centre)=4

 $\Rightarrow$  Empirical formula= $M_{2}X_{4}=MX_{2}$

• General Questions - Physics
• General Questions - Chemistry
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