List of top Chemistry Questions asked in KEAM

In the adsorption of a gas on solid, Freundlich isotherm is obeyed. The slope of the plot is zero. Thus, the extent of adsorption is

Consider the following compounds 1. $(NH_4)_2Cr_2O_7$ 2. $NH_4NO_2$ 3. $NH_4 VO_3$ 4. $NH_4 NO_3$ Which compound(s) yield nitrogen gas upon heating?

At $ 25{}^\circ C, $ at 5% aqueous solution of glucose (molecular weight $ =180\,g\,mo{{l}^{-1}} $ ) is isotonic with a 2% aqueous solution containing and unknown solute. What is the molecular weight of the unknown solute?

The compound that undergoes dehydration very easily is

For a first order reaction the rate constant is 6.909 $min^{-1}$. The time taken for 75% conversion in minutes is

Which among the following statements are correct? (i) Carbon monoxide is neutral whereas $ S0_3 $ is acidic (ii) Potassium oxide is basic whereas nitrous oxide is acidic (iii) Aluminium and zinc oxides are amphoteric (iv) Sulphur trioxide is acidic whereas phosphorus pentoxide is basic (v) Carbon dioxide is netural whereas sulphur dioxide is amphoteric

In the reaction,$2KMnO_4 + 16 HCl \rightarrow 5Cl_2 + 2MnCl_2 + 2KCl+8H_2O $ reduction product is

The compound ${[Pt(NH3)2Cl2]}$ can exhibit

The values if ?H and ?S for the reaction C(graphite) + CO(g) ?2CO(g) Are 170 kJ and 170 JK-1 respectively. The reaction will be spontaneous only a

An organic compound with the molecular formula $C_8H_8O$ forms $2,4-DNP$ derivative, reduces Tollen?s reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives $1,2$-benzene dicarboxylic acid. The organic compound is

Freon-12 is manufactured from tetrachloromethane by

An odd electron molecule among the following is

Which of the following is paramagnetic with bond order $ 0.5 $ ?

Which of the following is not in green house gas?

The organic compound with two asymmetric carbon atoms is

Which one of the following pairs consists of only paramagnetic species?

Which one of the following has the smallest bond angle ?

The standard electrode potentials of $ A{{g}^{+}}/Ag $ is $ +0.80\text{ }V $ and $ C{{u}^{+}}/Cu $ is $ +0.34\text{ }V $ . These electrodes are connected through a salt bridge and if:

The change in potential of the half-cell $Cu^{2+}|Cu$, when aqueous $Cu^{2+}$ solution is diluted $100$ times at $298 \,K$ ? $\left( \frac{2.303 RT}{F} = 0.06 \right)$

The number of lone pair and bond pair of electrons on the sulphur atom in sulphur dioxide molecule are respectively

Sangers reagent is used for the identification of:

Aluminium (atomic mass = $27$) crystallizes in a cubic system with edge length of $4 \, ?$. Its density is $2.7 \,g \,cm^{-3}$. The number of aluminium atoms present per unit cell is

The molecular geometry of $BF_3$ is

Propanal on reaction with dilute sodium hydroxide forms:

An alloy of transition metal containing a non transition metal as a constituent is