List of top Chemistry Questions asked in DUET

Which of the following has highest ionisation energy?

An element with configuration $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{5}$ will form a compound of highest ionic character with the element having configuration

Which of the following disaccharide has different type of linkage?

$ NaH $ contains how many covalent bonds?

Number of a and $n$ bonds in $C _{6} H _{5} COOH$ are

In the reaction $CH _{3} CH _{2} COONH _{4} {->[{ P _{2} O _{5}}]} A {->[{ H ^{+} / H _{2} O }]}B A$ and $B$ are

Which of the following process will give soap?

Which of the following does not effect half-life of first order reaction?

Toluene by Etard reaction gives:

At high pressure van der Waals equation becomes :

Reactivity order of following towards $ NaOE,\,EtOH $ :

$R - \underset{\overset{||}{O}}{C} - Cl + H_2 {->[Pd/BaSO_4][S]} RCHO$, the name of reaction is :

Number of atoms in bcc :

Which has equilibrium constant as one?

Starch is converted to ethanol by fermentation. The sequence of enzymes used are

How many ions will be furnished by $ CoCl_{3}\,.\,\,6NH_{3} $ ?

On reduction with hydrogen, $3.6\, g$ of an oxide of metal left $3.2\, g$ of metal. If the vapour density of metal is $32$, the simplest formula of the oxide would be

Ionic compounds are formed most easily with:

Number of unpaired electrons in $Mn^{4+}$ is :

Lattice energy of alkali metal chlorides follows the order :

On reduction with hydrogen, $3.6 \,g$ of an oxide of metal left $3.2 \,g $ of metal. If the vapour density of metal is $32$ , the simplest formula of the oxide would be :

The solubility product of $Ag _{2} CrO _{4}$ is $32 \times 10^{-12}$. What is the concentration of $CrO _{4}^{2-}$ ions in that solution (in $g$ ions $\left.L^{-1}\right)$ ?

The monomer of nylon-6 is/are :