Given below are two statements :
Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C-atoms.
Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other class of compounds such as ethers, haloalkanes.
In the light of the above statements, choose the correct answer from the options given below :

Consider the following reactions.
\( PbCl_{2}+K_{2}CrO_{4}\rightarrow A+2KCl \)
(Hot solution)
\( A+NaOH\rightleftharpoons B+Na_{2}CrO_{4} \)
\( PbSO_{4}+4CH_{3}COONH_{4}\rightarrow(NH_{4})_{2}SO_{4}+X \)
In the above reactions, A, B and X are respectively.

Given below are two statements :
Statement \((I)\) : \(p-\)nitrophenol is more acidic than \(m-\)nitrophenol and \(o-\)nitrophenol.
Statement \((II)\) : Ethanol will give immediate turbidity with Lucas reagent.
In the light of the above statements, choose the correct answer from the options given below :

Match List \(I\) with List \(II\)

List \(-I\)  (Atomic Number)	List \(-II\) (Block of periodic table)
\(A\) \(37\)	\(I\) \(p-\)block
\(B\) \(78\)	\(II\) \(d-\)block
\(C\) \(52\)	\(III\) \(f-\)block
\(D\) \(65\)	\(IV\) \(s-\)block

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The number of isomers possible for \(\left[ Pt ( en )\left( NO _{2}\right)_{2}\right]\) is :  

The increasing order of diazotisation of the following compounds is

For a given chemical reaction \(\gamma_{1} A +\gamma_{2} B \rightarrow \gamma_{3} C +\gamma_{4} D\) Concentration of \(C\) changes from \(10\, mmol\) appearance of \(D\) is \(1.5\) times the rate of disappearance of \(B\) which is twice the rate of disappearance \(A\). The rate of appearance of \(D\) has been experimentally determined to be \(9 \,m\,mol\) \(dm ^{-3} s ^{-1}\). Therefore the rate of reaction is \(......\,m\,mol\, dm ^{-3} \,s ^{-1}\). (Nearest Integer)

The sum and product of the mean and variance of a binomial distribution are \(82.5\) and \(1350\) respectively. They the number of trials in the binomial distribution is.

The square of the distance of the point \((-2, -8, 6)\) from the line \(\dfrac{x-1}{1} = \dfrac{y-1}{2} = \dfrac{z}{-1}\) along the line \(\dfrac{x+5}{1} = \dfrac{y+5}{-1} = \dfrac{z}{2}\) is equal to:

Given below are two statements: Statement \(I\): Fluorine has most negative electron gain enthalpy in its group. Statement \(II\): Oxygen has least negative electron gain enthalpy in its group. In the light of the above statements, choose the most appropriate from the options given below.

\(Fe ^{3+}\) cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of.

For electron gain enthalpies of the elements denoted as \(\Delta_{ eg } H\), the incorrect option is :

Evaluate the following statements related to group \(14\) elements for their correctness. \((A)\)Covalent radius decreases down the group from \(\mathrm{C}\) to \(\mathrm{Pb}\) in a regular manner. \((B)\) Electronegativity decreases from \(\mathrm{C}\) to \(\mathrm{Pb}\) down the group gradually. \((C)\) Maximum covalence of \(\mathrm{C}\) is \(4\) whereas other elements can expand their covalence due to presence of \(d\) orbitals. \((D)\) Heavier elements do not form \(\mathrm{p} \pi-p \pi\) bonds. \((E)\) Carbon can exhibit negative oxidation states. Choose the correct answer from the options given below: