List of top Chemistry Questions

Given below are two statements :
Statement-1: Aldol condensation is caused by acidity of a hydrogens.
Statement-2: Cross aldol is not possible between Ph-CHO and CH3CHO
In the light of the above statements, choose the most appropriate answer from the options given below:
How many of the following compounds are sp3 hybridized
Clemmensen Reduction \(\xrightarrow[Conc.HCL]{Zn-Hg}\) Product?
Which of the following is the correct order of first ionization enthalpy?
Among the following, decreasing order of basic strength will be:
OH-, H-, HCOO-, CH3COO-, -OR
(I)     (II)    (III)         (IV)          (V)
For which of the following elements, only one oxidation state is possible?
If emf of hydrogen electrode at 25 ℃ is zero in pure water, then pressure of H2 in bar is?
Which of the following has a maximum dipole moment?
Which of the following is the correct structure of L- Glucose
Iii which of the following, the solubility of $AgCl$ will be minimum?
The hybridisation of atom $'X'$ with atomic number $27$ in $\left[X F _{6}\right]^{3-}$ is
If two liquids $A$ and $B$ form minimum boiling azeotrope at some specific composition then ___________ .
Which one of the following oxyacids of chlorine is the least oxidizing in nature ?
The reason for the stability of $Gd^{3+}$ ion is

Among [Ni(CO)4], [Ni(CN)4] 2–, [NiCl4] 2– species, the hybridization states at the Ni atom are, respectively(At. No. of Ni = 28)

Name the members of the lanthanoid series which exhibit +4 oxidation state and those which exhibit +2 oxidation state. Try to correlate this type of behavior with the electronic configurations of these elements.

The conductivity of 0.02 N solution of a cell of KCl at 25∘C is 2.765×10−3S cm−1. If the resistance of a cell containing this solution is 4×103 ohm, what will be the cell constant?
The atomic masses of He and Ne are 4 and 20 a.m.u., respectively. The value of the de-Broglie wavelength of He gas at −73∘C is "M" times that of the de-Broglie wavelength of Ne at 727∘C.M is
The effective atomic number of iron in $[Fe(CN)_6]^{3-}$ is
The percentage of nitrogen in urea is about
In the modern periodic table, the period indicates the value of:
Elements with atomic number 35 belongs to
Which pair will show common ion effect ?

Strong reducing & oxidizing agent among the following respectively.

A binary solution of ethanol and n-heptane is an example of