Which of the following pairs of compounds is isoelectronic and isostructural ?

Which of the following organic compounds has same hybridization as its combustion product \((CO_2)\,?\)

Following solutions were prepared by mixing different volumes of \(NaOH\) and \(HCl\) of different concentrations \((a)\;\;60\; \mathrm{mL} \frac{\mathrm{M}}{10}\; \mathrm{HCl}+40 \;\mathrm{mL} \frac{\mathrm{M}}{10} \;\mathrm{NaOH}\) \((b)\;\;55\; \mathrm{mL} \frac{\mathrm{M}}{10}\; \mathrm{HCl}+45 \;\mathrm{mL} \frac{\mathrm{M}}{10} \;\mathrm{NaOH}\) \((c)\;\;75\; \mathrm{mL} \frac{\mathrm{M}}{5}\; \mathrm{HCl}+25 \;\mathrm{mL} \frac{\mathrm{M}}{5} \;\mathrm{NaOH}\) \((d)\;\;100\; \mathrm{mL} \frac{\mathrm{M}}{10}\; \mathrm{HCl}+100 \;\mathrm{mL} \frac{\mathrm{M}}{10} \;\mathrm{NaOH}\) \(pH\) of which one of them will be equal to \(1\) ?

In the following reaction: \(HC \equiv CH\,\xrightarrow[{H{g^{2 + }}}]{{{H_2}S{O_4}}}\,'P'\) Product \('P'\) will not give

The molar conductance of \(\mathrm{NaCl}, \mathrm{HCl}\) and \(\mathrm{CH}_{3} COONa\) at infinite dilution are \(126.45,426.16\) and \(91.0\, \mathrm{~S} \,\mathrm{~cm}^{2} \,\mathrm{~mol}^{-1}\) respectively. The molar conductance of \(\mathrm{CH}_{3} \mathrm{COOH}\) at infinite dilution is. Choose the right option for your answer. (In \(\mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}\))

Select the reagents that reduce nitriles to primary amines :
A. (i) \(LiAlH _4\); (ii) \(H _2 O\)
B. \(Sn + HCl\)
C. \(H _2 / Ni\)
D. \(Na ( Hg ) / C _2 H _5 OH\)
E. \(Br _2 /\) aq. NaOH
Choose the correct answer from the options given below :

Which of the given compounds can exhibit tautomerism ? Given :

Identify the incorrect statement related to \(\mathrm{PCl}_{5}\) from the following 

Match the catalyst with the process

Catalyst	Process
\((i) \;\mathrm{Na}_{2} \mathrm{O}\)	\((a)\) The oxidation of ethyne to ethanal
\((ii) \;\mathrm{TiCl}_{4}+ \mathrm{Al(CH_3)}_{3}\)	\((b)\) Polymerisation of alkynes
\((iii)\;\mathrm{PdCl_2} \)	\((c)\) Oxidation of \(SO_2\) in the manufacture of \(H_2SO_4\)
\((iv)\;\)Nickel complexes	\((d)\) Polymerisation of ethylene

Which of the following is the correct option ?

The total Lung Capacity (\(TLC\)) is the total volume of air accomodated in the lungs at the end of a forced inspiration. This includes

In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with \(Fe ^{3+}\) due to the formation of-

A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of \(3.14 \times 10^{-3}\) T at its centre. The current flowing through the coil, and the magnitude of the magnetic moment of this coil are, respectively :
(Take \(\mu_0=4 \pi \times 10^{-7} T m / A\) )

Given below are two statements : one is labelled as Assertion \((A)\) and the other is labelled as Reason \((R)\). Assertion \((A)\): Osteoporosis is characterised by decreased bone mass and increased chances of fractures. Reason \((R)\) : Common cause of osteoporosis is increased levels of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below: