NEET 2013

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?

The order of stability of the following tautomeric compounds is

Reaction by which benzaldehyde cannot be prepared

Dipole-induced dipole interactions are present in which of the following pairs

Identify the correct order of solubility in aqueous medium.

XeF2 is isostructural with

Which of the following is paramagnetic?

Which of the following is electron-deficient ?

Which of the following is a polar molecule?

What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20oC to 35oC?
(R = 8.314 J mol\(-\)1 K\(-\)1)

Antiseptics and disinfectants either kill or prevent growth of microgaisms. Identify which of the following statements is not true.

A magnetic moment at 1.73 BM will be shown by one among of the following

An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of moles of AgCl precipitated would be

Which of the following lanthanoid ions is diamagnetic?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)

Which of the following statements about the interstitial compounds is incorrect?

At 25oC molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm\(-\)1 cm2 mol\(-\)1 and at infinite dilution its molar conductance is 238 ohm\(-\)1 cm2 mol\(-\)1. The degree of ionisation of ammonium hydroxide at t...

A button cell used in watches function as following.
Zn(s) + Ag2O(s) + H2O(l) \(\rightleftharpoons\) 2Ag(s) + Zn2+(aq) + 2OH\(-\)(aq)
If half cell potentials are
Zn2+(aq) + 2e\(-\) \(\to\) Zn(s);  Eo = \(-\)0.76 V
Ag2O(s) + H2O(l) + 2e...

A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be

Maximum deviation from ideal gas is expected from

Which of the following compounds will not undergo Friedal-Craft's reaction easily?

Which of these is least likely to act as a lewis base ?

KMnO4 can be prepared from K2MnO4 as per the reaction,
3MnO42\(-\) + 2H2O \(\rightleftharpoons\) 2MnO4\(-\) + MnO2 + 4OH\(-\)
The reaction can go to completion by removing OH\(-\) ions by adding

In the reaction

A is

Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80\(-\)100oC forms which one of the following products?

Which of these is not a monomer for a high molecular mass silicone polymer?

Which of the following structure is similar to graphite?

The basic structural unit of silicates is

Which is the strongest acid in the following?

Which one of the following molecules contains no \(\pi\) bond?

Which of the following does not give oxygen on heating?

Which is the monomer of neoprene in the following?

Nylon is an example of

Roasting of sulphides gives the gas X as a byproduct. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing a...

The number of carbon atoms per unit cell of diamond unit cell is

A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm\(-\)3. The molar mass of the metal is
(NA Avogadro's constant = 6.02 \(\times\) 1023 mol\(-\)1)

How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3? The concentrated acid is 70% HNO3.

6.02 \(\times\) 1020 molecules of urea present in 100 mL of its solution. The concentration of solution is

The radical,

is aromatic because it has

Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is

The structure of isobutyl group in an organic compound is

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ?

The value of Planck's constant is 6.63 \(\times\) 10\(-\)34 J s. The speed of light is 3 \(\times\) 1017 mm s\(-\)1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6 \(\times\) 1015 s$$-...

What is the maximum numbers of electrons that can be associated with the following set of quantum numbers ?
n = 3, \(l\) = 1 and m = \(-\) 1

Based on equation E = \(-\) 2.178 \(\times\) 10\(-\)18 J \(\left( {{{{Z^2}} \over {{n^2}}}} \right)\), certain conclusions are written. Which of them is not correct ?

A reaction having equal energies of activation for forward and reverse reactions has