List of top Chemistry Questions asked in UPSEE

Which of the following is a meso compound ?

Which of the following is Reimer - Tieman reaction?

Which one of the following will be reactive for Perkin condensation ?

Which of the following effects of $-NO_2$ group operates on $-NH_2$ group in this molecule ?

What is the name of the following reaction? $ HCHO + HCHO { ->[{NaOH}][{\Delta}] }CH_3OH + HCOONa$

For car battery which one is correct statement ?

Which of the following is a lyophobic colloid :

The enthalpy of the formation of $CO_2$ and $H_2O$ are - $395\, kJ$ and - $285\, kJ$ respectively and the enthalpy of combustion of acetic acid is $869\, kJ.$ The enthalpy of formation of acetic acid is:

Among the following compounds of Boron, the species which also forms $\pi $ - bond in addition to $\sigma$ - bonds is:

Give the IUPAC name for the following structure :

In terms of polar character which one of the following orders is correct?

Which graph shows zero activation energy for reaction ?

The structure of $XeF_2$ and $NH_3$ respectively are

The half life period of a radio active element is $30$ days, after $90$ days the following quantity will be left

Milk is an emulsion in which:

Micelles are:

Which of the following reacts fastest with conc. $HCl$ ?

The Lewis acidity of $BF_3$ is less than $BCl_3$ even though fluorine is more electronegative than chlorine. It is due to

In $OF_2$, oxygen has hybridization of

Which one is not the property of crystalline soild ?

Friedel - Craft reaction is not related with :

The decreasing order of electron affinity is:

Which of the following compounds contain at least one secondary alcohol?

The isomerism exhibited by following compounds $[Co(NH_3)_6][Cr(CN)_6]$ and $[Cr(NH_3)_6][Cr(CN)_6]$ is

Transition state $2\, (TS2)$ is structurally most likely as: