List of top Questions asked in NEET (UG)- 2013

At 25°C 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 the same concentration and temperature is

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

A button cell used in watches functions as following
Zn(s) + Ag₂O(s) + H₂O(l) ⇌ 2Ag(s) + Zn²⁺ (aq) + 20H^- (aq)
If half cell potentials are
Zn²⁺(aq) + 2e^- → Zn(s); E° = -0.76 V
Ag₂O(s) + H₂O(l) + 2e^- → 2Ag(s) + 20H^-(aq),
E° = 0.34 V
The cell potential will be

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.

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

Maximum deviation from ideal gas is expected from

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
(N_A Avogadro's constant = 6.02 × 10²³ mol^-1)

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

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

Roasting of sulphides gives the gas X as a by-product. This is a colorless 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 agent and its acid has never been isolated. The gas X is

Which is the strongest acid in the following ?

Which of the following is paramagnetic ?

Which of the following structure is similar to graphite ?

The basic structural unit of silicates is

Reaction by which Benzaldehyde cannot be prepared

Which of the following does not give oxygen on heating ?

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

Identify the correct order of solubility in aqueous medium

XeF₂ is isostructural with

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 these is least likely to act as a Lewis base ?

KMnO₄ can be prepared from K₂MnO₄ as per the reaction:
\(3MnO^{2-}_4+2H_2O⇌2MnO^-_4+MnO_2+4OH^-\)
The reaction can go to completion by removing OH^- ions by adding

Which of the following is electron-deficient?

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

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