List of top Questions asked in NEET (UG)

Which of these is least likely to act as a Lewis base ?
XeF2 is isostructural with
Structure of the compound whose IUPAC name is 3- Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is
Reaction by which Benzaldehyde cannot be prepared
Which of the following is paramagnetic ?
Which of the following does not give oxygen on heating ?
Which of the following structure is similar to graphite ?
The basic structural unit of silicates is
Which of the following lanthanoid ions is diamagnetic ?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)
The number of carbon atoms per unit cell of diamond unit cell is
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
Maximum deviation from ideal gas is expected from
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
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 × 1023 mol-1)
Which is the strongest acid in the following ?
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.
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
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
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 ?
Crystal field stabilisation energy for high spin $d^4$ octahedral complex is
$6.02 \times 10^{20}$ molecules of urea are present in 100 mL of its solution. The concentration of solution is :-