Given below are two statements :- Statement \(I:\)- In redox titration, the indicators used are sensitive to change in \(pH\) of the solution. Statement \(II:\)- In acid-base titration, the indicators used are sensitive to change in oxidation potential. In the light of the above statements, choose the most appropriate answer from the options given below

From the compounds given below, number of compounds which give positive Fehling's test is _______. [Benzaldehyde, Acetaldehyde, Acetone,  Acetophenone,Methanal, \(4-\)nitrobenzaldehyde, cyclohexane carbaldehyde].

Gaseous \(N_2O_4\) dissociates into gaseous \(NO_2\) according to the reaction \([{N_2}{O_4}\,(g)\, \rightleftharpoons \,2N{o_2}(g)]\) At \(300\,K\) and \(1\,atm\) pressure, the degree of dissociation of \(N_2O_4\) is \(0.2.\) If one mole of \(N_2O_4\) gas is contained in a vessel, then the density of the equilibrium mixture is.......\(g/L\)

Consider the following reactions \((a)\;\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCH}(\mathrm{OH}) \mathrm{CH}_{3} \stackrel{\mathrm{conc.H}, \mathrm{SO}_{4}}{\longrightarrow}\) \((b)\;\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCH}(\mathrm{Br}) \mathrm{CH}_{3} \stackrel{\text { alc.KOH }}{\longrightarrow}\) \((c)\;\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCH}(\mathrm{Br}) \mathrm{CH}_{3} \xrightarrow[\text { It should be }\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CO}^{-} \mathrm{K}^{+}]{\text { given by } \mathrm{NTA}\left(\mathrm{CH}_{3}\right)_{3} \mathrm{O}^{-} \mathrm{K}^{+}}\) \((d)\;\begin{array}{*{20}{c}}
  {{{(C{H_3})}_2}C - C{H_2} - CHO} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}\xrightarrow{\Delta }\) Which of these reaction(s) will not produce Saytzeff product ?

Assume carbon burns according to following equation : \(2 C _{( s )}+ O _{2( g )} \rightarrow 2 CO ( g )\) When \(12\,g\) carbon is burnt in \(48\,g\) of oxygen, the volume of carbon monoxide produced is \(......\times 10^{-1}\,L\) at STP [nearest integer] [Given : Assume \(CO\) as ideal gas, Mass of \(C\) is \(12\,g\,mol ^{-1}\), Mass of \(O\) is \(16\,g\,mol ^{-1}\) and molar volume of an ideal gas at STP is \(22.7\,L\, mol ^{-1}\) ]

For the electro chemical cell \(\mathrm{M}\left|\mathrm{M}^{2+}\right||\mathrm{X}| \mathrm{X}^{2-}\) If \(\mathrm{E}_{\left(\mathrm{M}^{2+} / \mathrm{M}\right)}^0=0.46 \mathrm{~V}\) and \(\mathrm{E}_{\left(\mathrm{x} / \mathrm{X}^{2-}\right)}^0=0.34 \mathrm{~V}\). Which of the following is correct?

Number of bromo derivatives obtained on treating ethane with excess of \(Br _2\), in diffused sunlight is \(..........\).

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

List\(-I\)	List\(-II\)
\((a)\) \(Ne _{2}\)	\((i)\) \(1\)
\((b)\) \(N _{2}\)	\((ii)\) \(2\)
\((c)\) \(F _{2}\)	\((iii)\) \(0\)
\((d)\) \(O _{2}\)	\((iv)\) \(3\)

Choose the correct answer from the options given below:

For the reaction \(H _{2} F _{2( g )} \rightarrow H _{2( g )}+ F _{2( g )}\) \(\Delta U =-59.6\,kJ\,mol ^{-1} \text { at } 27^{\circ}\,C\). The enthalpy change for the above reaction is (-) \(kJ mol ^{-1}\) [nearest integer] Given : \(R =8.314\,JK ^{-1}\,mol ^{-1}\)

\(\lim\limits_{x \rightarrow 2} \frac{3^{x}+3^{3-x}-12}{3^{-x / 2}-3^{1-x}}\) is equal to

A spherical surface separates two media of refractive indices 1 and 1.5 as shown in figure. Distance of the image of an object ' O ' is :
( C is the center of curvature of the spherical surface and \(R\) is the radius of curvature)

A liquid column of height \(0.04 \mathrm{~cm}\) balances excess pressure of soap bubble of certain radius. If density of liquid is \(8 \times 10^3 \mathrm{~kg} \mathrm{~m}^{-3}\) and surface tension of soap solution is \(0.28 \mathrm{Nm}^{-1}\), then diameter of the soap bubble is _______ \(\mathrm{cm}\). \(\text { (if } g=10 \mathrm{~ms}^{-2} \text { ) }\)

Let two fair six-faced dice \(A\) and \(B\) be thrown simultaneously. If  \(E_1\) is the event that die \(A\) shows up four, \(E_2 \) is the event that die \(B\) shows up two and \(E_3\) is the event that the sum of numbers on both dice is odd, then which of the following statements is NOT true \(?\)