Which of the following compounds will not give azo coupling reaction with benzene diazonium chloride?

Calculate the magnetic moment of \(K _4\left[ Mn ( CN )_6\right]\) complex:

For the following reaction, at equilibrium the Nernst equation may be written as:
\(\mathrm{Zn}(\mathrm{s})+\mathrm{Cu}^{2+}(\mathrm{aq}) \rightarrow \mathrm{Zn}^{2+}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s})\)

Match List - I (Common name) with List - II (IUPAC name)

List - I (Common Name)	List - II (IUPAC name)
(A) Aniline	(I) N-Phenylethanamide
(B) Acetanilide	(II) Benzenamine
(C) Sulphanilic acid	(III) Prop-2-en-1-amine
(D) Allylamine	(IV) p-aminobenzene sulphonic acid

Choose the correct answer from the options given below:

Given below are reduction potentials :
(A) \(E _{ Cu ^{2+} / Cu }^0=0.34 V\)
(B) \(E _{ Sn ^{2+} / Sn }^0=-0.14 V\)
(C) \(E _{ Zn ^{2+} / Zn }^0=-0.76 V\)
(D) \(E _{ K ^{+} / K }^0=-2.93 V\)
The strongest reducing agent from the above is :

Match List-I with List-II.

List-I	List-II
(A) Element with highest second ionisation enthalpy	(I) Co
(B) Element with highest third ionisation enthalpy	(II) Cr
(C) M\) in \(M(C O)_6\) is	(III) Cu
(D) Element with highest heat of atomisation	(IV) Zn

Choose the correct answer from the options given below:

Equilibrium constant is \(2 \times 10^{37}\) at 298 K for the reaction:
\(Zn(s) + Cu^{2+}(aq) \rightarrow Zn^{2+}(aq) + Cu(s)\).
Predict the spontaneity of the cell and calculate \(E_{\text{cell}}\).
[Given: \(\text{log } 2 = 0.3010\)]

"Match List-l with List-ll

List-l (Terms)	List-II (Features)
(A). Amniocentesis	(I). Maternal mortality rate
(B). MMR	(II). Surgical method of contraception
(C). Periodic abstinence	(III). Process to test genetic disorders in foetus
(D). Vasectomy	(IV). Natural method of contraception

Choose the correct answer from the options given below: "

Read the passage carefully and answer the Questions
A homogeneous mixture of two or more than two components has uniform composition and properties. The binary solutions have two components, which may be solid, liquid or gas. The resultant solution has a larger amount of solvent and a smaller amount of solute. The amount of solute in a given amount of solvent decides the concentration of the resulting solution. The concentration can be expressed in various ways, like molarity, molality, normality and mole fraction. The molality of a 1 liter aqueous solution of \(93 \backslash \% H _2 SO _4\) (mass/volume) is:
(Given: density of the solution \(=1.84 g mL ^{-1}\), molar mass of \(\left.H _2 SO _4=98 g mol ^{-1}\right)\)

Given that two identical coils, one of copper and another of aluminium are rotated with the same angular speed in an external magnetic field, which of the following statements is true?

What is the colour of the third band of a coded resistor of resistance 3.2 \(\times 10^3\) \(\Omega\) ?

Observe the figures and answer the question.

Coleoptile and Coleorrhiza in the embryo of grasses are:

If a host fish species becomes extinct and its unique assemblage of parasites also meets extinction, this is an example of: