IIT-JEE 2005 Mains

In the following reaction

Identify X and Y.

Which of the following disaccharide will not reduce Tollen's reagent?

Predict whether the following molecules are iso-structural or not. Justify your answer.
(A) NMe\(_3\)
(B) N(SiMe\(_3\))\(_3\)

Given : that \({\mu _{obs}} = \sum {{\mu _i}\,{x_i}}\) where \({\mu _i}\) is the dipole moment of stable conformer and \({x_i}\) is the mole fraction of that conformer.
(A) Write stable conformer for Z-CH\(_2\)-CH\(_2\)-Z in Newman's proje...

Fill in the blanks:
(A) \(_{92}^{235}\)U + \(_{0}^{1}\)n \(\to\) \(_{52}^{137}\)A + \(_{40}^{97}\)B + ____________.
(B) \(_{34}^{82}\)Se \(\to\) 2 \({}_{ - 1}{e^0}\) + __________.

For the following reaction
2X(g) \(\to\) 3Y(g) + 2Z(g)
assuming ideal gas conditions, the data for change of partial pressure with time is as follows:
$$
\begin{array}{llll}
\hline \text { Time (in min) } & 0 & 100 & 200 \\
\hline \begin{ar...

In the following reaction, X is optically active.
$\underset{\mathbf{X}}{\mathrm{C}_5 \mathrm{H}_{13}} \mathrm{~N} \xrightarrow[\mathrm{~N}_2]{\mathrm{NaNO}_2 / \mathrm{HCl}} \mathbf{Y}($ Tertiary alcohol $)+$ Other products
Find X and Y. I...

In the following reaction sequence :

Identify A, B, C and D. Also write chemical equations for cons version of A to B and A to C.

\(F{e^{3 + }}\buildrel {SN{C^ - }(excess)} \over \longrightarrow\) blood red \(F{e^{3 + }}\buildrel {SN{C^ - }(excess)} \over \longrightarrow\) colourless (B):
(A) Identify compound A and B and write their IUPAC names.
(B) Determine the...

In the following reaction sequence, M is a transition metal.

Identify the metal M and MCl\(_4\). Explain the difference in colours of MCl\(_4\) and A.

Write the balanced chemical equation for developing a back and white photographic film. Also explain why the solution of sodium thiosulphate on acidification turns milky white.

(A) Calculate \(\Delta_r G^\circ\) of the following reaction
\(A{g^ + }(aq.) + C{l^ - }(aq.) \to AgCl(s)\)
Given :
\(\mathrm{\Delta_r G^\circ(AgCl)\quad-109~kJ/mole}\)
\(\mathrm{\Delta_r G^\circ(Cl^-)\quad-129~kJ/mole}\)
$$\mathrm{\Delta_r ...

Give reasons :

(A) Calculate the amount of calcium oxide required to react with 852 g of P\(_4\)O\(_{10}\).
(B) Write the structure of P\(_4\)O\(_{10}\).

Monomer A of a polymer on ozonolysis yields two moles of HCHO and one mole of CH\(_3\)COCHO.
(A) Deduce the structure of A.
(B) Write the structure of "all \(cis\)" forms of polymer of compound A.

An element crystallises in fcc lattice having edge length 400 pm. Calculate the maximum diameter of the atom which can be placed in interstitial site such that the structure is not distorted.

(A) Calculate velocity of electron in the first orbit of hydrogen atom (Given : \(r=a_0=0.529\) \(\mathop A\limits^o\)).
(B) Calculate the de Broglie's wavelength of the electron in first Bohr orbit.
(C) Calculate the orbital angular momen...

Nitrogen gas is absorbed on 20% surface sites. On heating N\(_2\) gas evolved from sites and was collected at 0.01 atm and 298 K in a container of volume 2.46 cm\(^3\). Find out the number of surface sites occupied per molecule of N, if the...