Galvanization is applying a coating of :

Given below are two statements:
Statement I : D-glucose pentaacetate reacts with 2, 4-dinitrophenylhydrazine
Statement II : Starch, on heating with concentrated sulfuric acid at \(100^{\circ} \mathrm{C}\) and 2-3 atmosphere pressure produces glucose.
In the light of the above statements, choose the correct answer from the options given below.

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 :

When a hydrocarbon A undergoes complete combustion it requires \(11\) equivalents of oxygen and produces \(4\) equivalents of water. What is the molecular formula of \(A\) ?

What happens to freezing point of benzene when small quantity of napthalene is added to benzene?

Of the species, \(NO , NO ^{+}, NO ^{2+}, NO ^{-},\) the one with minimum bond strength is :

Which of the following is correct set of \(4\) quantum numbers of \(19^{th}\) electron in Chromium (Atomic number \(= 24\)) in accordance with Aufbau principle?

The stepwise formation of \(\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}\) is given below \(Cu ^{2+}+ NH _{3} \stackrel{ K _{1}}{\rightleftharpoons}\left[ Cu \left( NH _{3}\right)\right]^{2+}\) \(\left[ Cu \left( NH _{3}\right)\right]^{2+}+ NH _{3} \stackrel{ K _{2}}{\rightleftharpoons}\left[ Cu \left( NH _{3}\right)_{2}\right]^{2+}\) \(\left[ Cu \left( NH _{3}\right)_{2}\right]^{2+}+ NH _{3} \stackrel{ K _{3}}{\rightleftharpoons}\left[ Cu \left( NH _{3}\right)_{3}\right]^{2+}\) \(\left[ Cu \left( NH _{3}\right)_{3}\right]^{2+}+ NH _{3} \stackrel{ K _{4}}{\rightleftharpoons}\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}\) The value of stability constants \(K _{1}, K _{2}, K _{3}\) and \(K _{4}\) are \(10^{4}, 1.58 \times 10^{3}, 5 \times 10^{2}\) and \(10^{2}\) respectively. The overall equilibrium constants for dissociation of \(\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}\) is \(x \times 10^{-12}\) The value of \(x\) is ............... (Rounded off to the nearest integer)

The radius of the second Bohr orbit for hydrogen atom is  .......... \(\mathop A\limits^o \) (Plank's const. \( h = 6. \times 10^{-34}\, Js\,;\) mass of electron \(= 9.1091 \times 10^{-31}\, kg\,;\) charge of electron \(e= 1.60210 \times 10^{-19}\, C\,;\) permittivity of vaccum \(\epsilon _0 = 8.854185 \times 10^{-12} \,kg^{-1} \,m^{-3} A^2\))

The minimum value of the sum of the squares of the roots of \(x^{2}+(3-a) x+1=2 a\) is.

Statement \(1\) : The only circle having radius \(\sqrt {10} \) and a diameter along line \(2x + y = 5\) is \(x^2 + y^2 - 6x +2y = 0\).
Statement \(2\) : \(2x + y = 5\) is a normal to the circle \(x^2 + y^2 -6x+2y = 0\).

A thermally insulted vessel contains \(150\, g\) of water at \(0\,^oC\). Then the air from the vessel is pumped out a adiabatically. A fraction of water turns into ice and the rest evaporates at \(0\,^oC\) itself. The mass of evaporated water will be closes to ....... \(g\) (Latent heat of vaporization of water \(= 2.10 \times10^6\, Jkg^{-1}\) and Laten heat of Fusion of water \( = 3.36 \times10^5\,Jkg^{-1}\) )

The correct sequence of reagents for the preparation of \(Q\) and \(R\) is :