Which one of the following compounds shows the presence of intramolecular hydrogen bond ?

Statement \(I :\) Acid strength increases in the order given as \(\mathrm{HF}<\mathrm{HCl}<<\mathrm{HBr}<<\mathrm{HI}\) Statement \(II :\) As the size of the elements \(\mathrm{F}, \mathrm{Cl}, \mathrm{Br}, \mathrm{I}\) increases down the group, the bond strength of \(\mathrm{HF}\), HCl, HBr and HI decreases and so the acid strength increases. In the light of the above statements, choose the correct answer from the options given below.

If the equilibrium constant for \(N_{2(g)} + O_{2(g)} \rightleftharpoons  2NO_{(g)}\) is \(K,\) the equilibrium constant for \(\frac{1}{2} N_{2(g)} + \frac{1}{2} O_{2(g)} \rightleftharpoons  NO_{(g)}\) will be

Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below \(\mathrm{BrO}_{4}^{-} \stackrel{1.82 \mathrm{V}}{\longrightarrow} \mathrm{BrO}_{3}^{-} \stackrel{1.5 \mathrm{V}}{\longrightarrow} \mathrm{HBrO}\)\(\stackrel{1.0652 \mathrm{V}}{\longrightarrow} \mathrm{Br}_{2} \stackrel{1.595 \mathrm{V}}{\longrightarrow} \mathrm{Br}^{-}\) Then the species undergoing disproportionation is

For the tetrahedral complex \([ MnBr _{-} 4]^{2-}\), the spin only magnetic moment value is \(....\) [At. no. of \(Mn = 25 ]\)

A mixture of \(2.3\; \mathrm{g}\) formic acid and \(4.5 \;\mathrm{g}\) oxallic acid is treated with conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\). The evolved gaseous mixture is passed through KOH pellets. Weight  of the remaining product at \(STP\) ..........\(g\)

The following solutions were prepared by dissolving \(10\, \mathrm{~g}\) of glucose \(\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)\) in \(250 \,\mathrm{ml}\) of water \(\left(\mathrm{P}_{1}\right)\), \(10\, \mathrm{~g}\) of urea \(\left(\mathrm{CH}_{4} \mathrm{~N}_{2} \mathrm{O}\right)\) in \(250\, \mathrm{ml}\) of water \(\left(\mathrm{P}_{2}\right)\) and \(10\, \mathrm{~g}\) of sucrose \(\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)\) in \(250\, \mathrm{ml}\) of water \(\left(\mathrm{P}_{3}\right)\). The right option for the decreasing order of osmotic pressure of these solutions is :

If \(8 \;g\) of a non-electrolyte solute is dissolved in \(114 \;g\) of n-octane to reduce its vapour pressure to \(80 \%,\) the molar mass (in \(g mol ^{-1}\) ) of the solute is Given that molar mass of n-octane is \(114 \;g\; mol ^{-1}\)

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Genetic drift operates in

All of the following are included in ‘Ex-situconservation’ except

A uniform conducting wire of length \(12 \mathrm{a}\) and resistance \('R'\) is wound up as a current carrying coil in the shape of, \((i)\) an equilateral triangle of side \('a'.\) \((ii)\) a square of side \('a'.\) The magnetic dipole moments of the coil in each case respectively are:

Which of the statements given below is not true about formation of Annual Rings in trees ?