`Fe^(3+)overset(SCN^(-) ("excess"))rarr "Blood red (A)" overset(F^(-)("excess"))rarr "Colourless (B)"` Identify A and B. (i) Write IUPAC name of A and

Correct Answer - B `E_(Fe^(2+)//Fe^(3+))^(@)` is positive in alkaline solution, therefore, it is easier to oxidise `Fe^(2+) " to " Fe^(2+)` in alkaline medium

Correct Answer - A since all collision are elestic and total energy is conserved Time period of motion of right block is `t_(1) = (2L)/(v)`. Time period of motion of left...

Correct Answer - A=`Na_(2)CrO_(4)`, B=`Na_(2)Cr_(2)O_(7)` , C=`Na_(2)CrO_(4)` , D=`Ag_(2)CrO_(4)` `CrO_(2)Cl_(2)+4NaOH to Na_(2)CrO_(4) (A)+2NaCl + 2H_(2)O` `Na_(2)CrO_(4)+H_(2)SO_(4) to 2Na_(2)Cr_(2)O_(7)(B)+Na_(2)SO_(4)+H_(2)O` `Na_(2)Cr_(2)O_(7) +2Na_(2)CrO_(4) (C )+H_(2)O` `Na_(2)CrO_(4) +2AgNO_(3) to Ag_(2)CrO_(4) (D) +2NaNO_(3)`

Correct Answer - (a) `CH_(3)-overset(CH_(3))overset(|)(C )=O` , (b) `CH_(3)-underset(O)underset(||)(C )-underset(O)underset(||)(C )-CH_(3)`, (c ) `CH_(3)-COOH` , (d) `CH_(3)-overset(CH_(3))overset(|)(C )=O+CH_(3)-overset(O)overset(||)(C )-OH`

Correct Answer - a. `(A)rarrCH_(3)-underset(CH_(2))underset(||)C-CH=CH_(2)`

`Fe^(3+)(aq)+SCN^(-)(aq)hArrFe(SCN)^(2+)(aq)` (A) For given Q `alpha` V `rArr` on addition of water `QgtK` reaction move backward (B) `Fe^(+3)+3OH^(-)hArrFe(OH)_(3)(s)` reaction moves backward

`CH_(3)-O-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(3) ` IUPAC name: 2-methoxy-2-methylpropane.

Correct Answer - Mass number = 180, Atomic number = 72

Correct Answer - `X=Cl_(3)C-underset(O)underset(||)(C)-OH,Y=Cl_(3)C-underset(O)underset(||)(C)-Cl,Z=Cl_(3)C-underset(O)underset(||)(C)-H,W=CHCl_(3),S=HCOO^(Theta)`

Correct Answer - 99