Select the correct relation between the electrochemical cell and Gibbs free energy for the following reaction
\(Zn (s)+ Cu ^{2+}(a q) \rightarrow Zn ^{2+}(a q)+ Cu (s)\)

Solubility of a gas in a liquid:

The solubility of a gas in a liquid

List-I	List-II
(A) Tollen's reagent	(I) Rochelle salt
(B) Jones reagent	(II) Conc. HCl and \(ZnCl _2\)
(C) Lucas reagent	(III) Ammoniacal silver nitrate
(D) Fehling solution	(IV) Chromium trioxide-sulfuric acid

Choose the correct match:

Choose the statements that are valid for the molecularity of a reaction
(A) Molecularity is equal to the number of reacting species involved in the overall reaction
(B) Decomposition of ammonium nitrite is an example of unimolecular reaction
(C) Reactions with the molecularity three are very rare
(D) Molecularity can only be determined experimentally
Choose the correct answer from the options given below:

With reference to the elimination reaction of alkyl halides, the correct statements are;
(A) Zaitsev rule predicts the major product in dehydrohalogenation reaction.
(B) Grignard's reagent is prepared under perfectly anhydrous conditions.
(C) Alkyl halides on reaction with aqueous KOH forms an eliminated product but with alcoholic KOH forms a substituted product.
(D) Alkyl halides on reaction with aqueous KOH forms a substituted product but with alcoholic KOH forms an eliminated product.
Choose the correct answer from the options given below:

Which of the following is correct about the nature of ligand?

Which factors are responsible for making fluorine the strongest oxidising agent ?
(A) \quad Highest electronegativity
(B) \quad High electron gain enthalpy
(C) \quad High bond dissociation enthalpy
(D) \quad Small size of flourine
Choose the correct answer from the options given below :

The IUPAC Name for the complex \(Hg [Co(SCN)_4]\)

Two capacitors of capacitances \(3 \mu F\) and \(6 \mu F\) are charged to potentials of \(2 V\) and \(3 V\), respectively. Now, if they are connected in parallel, the charge on each of the two capacitors, will be

p-block elements are placed in groups 13 to 18 of the periodic table. Group 15 is nitrogen family.
Nitrogen makes various compounds like \(NH _3, HNO _3, N_2 O , NO _2\) etc. Phosphorus exists in the form of white and red phosphorus. White phosphorus glows in dark. \(PH _3\) gas is used as smoke screen. Group 16 is called oxygen family. Dry air contains \(21\% O_2\) gas by volume. Combined sulphur exists as sulphates such as gypsum, epsome salt, baryte etc. The allotropic forms of sulphur are Rhombic and monoclinic sulphur. \(S_2\) is paramagnetic like \(O_2\) and it stable at high temperature.
Group 17 is Halogen family. \(F_2\) is highly reactive, \(Cl _2\) is greenish yellow gas. Both \(SO _2\) and \(Cl _2\) are used for bleaching. Group 18 is Noble gas family but some noble gases also form compounds.
Complete hydrolysis of \(XeF _6\) gives HF and \(XeO _3\) as main products.
At elevated temperature \((\sim 1000 K)\) the dominant form of sulphur is :

On a multiple choice examination with 4 possible answers (out of which one is correct)
for each of the five questions, the probability that a candidatewould get 4 or more correct answers just by guessing is:

Two pipes P and Q can fill a tank in 26 minutes and 52 minutes respectively.
Both the pipes are opened together for some time and then pipe P is closed.
If the tank is filled in 26 minutes, then after how many minutes pipe P is closed?