Which of the following compound shows optical isomerism ?

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A ketone \([A]\) which undergoes haloform reaction gives compound \([B]\) on reduction. Compound
\([B]\) on heating with sulphuric acid gives compound \([C]\) which forms monozonide \([D]\). The
compound \([D]\) on hydrolysis in the presence of zinc dust gives compound \([E]\). 
Compound \([E]\) on oxidation gives \(C _2 H _4 O _2\) [F]
Compound \([ F ]\left( C _2 H _4 O _2\right)\) on treatment with chlorine, in the presence of small amount of red phosphorus, gives :

Ammonia is manufactured by:
\(N _2(g)+3 H _2(g) \rightleftharpoons 2 NH _3(g) \quad \Delta H=-46.1 kJ / mol\)
The various steps involved are:
(A) Condensation of mixture of gases
(B) Passing the gaseous mixture over catalyst
(C) Compression of the mixture of gases
(D) Recirculation of the gaseous mixture
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The hormone responsible for preparing the uterus for implantation of fertilised egg is :

A solution of copper sulphate cannot be stored in zinc vessel because:

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The noble gases have closed shell electronic configuration and are monatomic gases under normal conditions. The low boiling points of lighter noble gases are due to the weak dispersion forces between the atoms and the absence of other inter atomic interaction. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers \(+2, +4\) and \(+6\).
\(\text{XeF}_4\) reacts violently with water to give \(\text{XeO}_3\). The compound of Xenon exhibit stereoisomerism and their geometries can be deduced considering the total number of electrons in the valence shell.
Match List - I with List – II.

List - I	List - II
A. Its partial hydrolysis does not change the oxidation state of the central atom	I. He
B. It is used in modern diving apparatus	II. \(\text{XeF}_6\)
C. It is used to provide inert atmosphere for filling electrical bulbs	III. \(\text{XeF}_4\)
D. Its central atom is in \(\text{sp}^3\text{d}^2\) hybridisation state	IV. Ar

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The product in the following reaction is

Widal test is used to diagnose:

The function of the soft iron core in the moving coil galvanometer is:

A parallel beam of light of wavelength 500 nm is incident normally on a slit of width d. If the distance between slit and screen is 0.6 m and distance of second order minimum from the centre of the screen is 6.0 mm, What is the width of the slit?

Cyclosporin A, which is used as an immunosuppressive agent, is produced by:

If \(A\) is a square matrix such that \(A^2=A\), then the value of \((I-A)^2-(I+A)^3\) is :

If \(\vec{a}, \vec{b}\) and \(\vec{c}\) are three vectors such that \(\vec{a}+\vec{b}+\vec{c}=\overrightarrow{0},|\vec{a}|=7,|\vec{b}|=3\) and \(|\vec{c}|=5\), then angle between \(\vec{b}\) and \(\vec{c}\) is