List of top Chemistry Questions asked in UP CPMT

Which one of the following options is correct?

Which is the most acidic compound among the following?

What is the product formed when acetylene reacts with hypochlorous acid ?

The reaction, $2H_{2}O_{2} \to 2H_{2}O +O_{2} ; $ shows that $H_{2}O_{2}$

The raw material for Raschig process is

The order of osmotic pressure of three equimolar aqueous solutions of $CaCl_{2}, NaCl$ and $C_{6}H_{12}O_{6}$ (glucose) is

The dissociation constant of a substituted benzoic acid at $25^{\circ}C$ is $1.0 \times 10^{-4}$. The $pH$ of $0.01 \,M$ solution of its sodium salt is

Shape and hybridisation of $SO_2$ are

Oxidation number of $Cr$ in $Cr_{2} O^{2-}_{7}$ is

Gypsum is added to cement to

$H_{3}BO_{3}$ is acidic because it

The most stable $+2$ oxidation state is exhibited by

In Kjeldahl's method, the nitrogen present is estimated as

What is the $pH$ of a $0.5\, M$ aqueous solution of $NH_4Cl$ with $0.2\, M \,NH_3$? $ (pK_a = 9.25)$

Phosphine is prepared by the action of

Which of the following ions has the maximum magnetic moment?

The molecular weight of acetic acid in vapour phase is

The ionisation potential for $He^+$ is

The given reaction is an example of $As_2O_3 +H_2S \to As_2S_3 + H_2O$

The energy of an electron in $n^{th}$ orbit of the hydrogen atom is given by $E_n = -\frac{13.6}{n^2} eV$. The energy required to raise an electron from the first orbit to the second orbit will be

The compound obtained by heating a mixture of ethyl amine and chloroform with ethanolic potassium hydroxide $(KOH)$ is

Colour imparted to the flame by $Ba^{2+}$ is

Which one of the following is paramagnetic?

Which of the following molecular spedes has impaired electron(s) ?

Which one of the following have lowest $pK_a$?