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

Identify the correct order of solubility in aqueous medium

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 ?

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

Which of the following structure is similar to graphite ?

Which of the following does not give oxygen on heating ?

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 ?

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

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.

A coil is self-inductance $L$ is connected in series with a bulb $B$ and an $AC$ source. Brightness of the bulb decreases when :

The characteristics of class Reptilia are

Crystal field stabilisation energy for high spin $d^4$ octahedral complex is

The anion of acetylacetone (acac) forms $Co (acac)_3$ chelate with $Co^{3+}$. The rings of the chelate are :

Some reactions of amines are given. Which one is not correct ?

$6.02 \times 10^{20}$ molecules of urea are present in 100 mL of its solution. The concentration of solution is :-

During sewage treatment biogas produced includes

H-zone in skeletal muscle fibre is due to

Which of the following statements is correct in relation to the endocrine system ?

Consider the half-cell reduction reaction :- $Mn^{2+}+2e^{-}\to Mn, E^{0}=-1.18 V$ $Mn^{2+}\to Mn^{3+}+e^{-}, E^{0}=-1.51 V$ The $E^\circ$ for the reaction $3 Mn^{2+}\to Mn^{0}+2Mn^{3+}$ and possibility of the forward reaction are respectively :

Two metal rods $1$ and $2$ of same lengths have same temperature difference between their ends. Their thermal conductivities are $ K_1$ and $K_2 $ and cross sectional areas $ A_1 $ and $ A_ 2 $ respectively. If the rate of heat conduction in 1 is four times that in 2, then :