List of top Questions asked in KEAM- 2017

The reaction of propene with HBr in presence of peroxide proceeds through the intermediate

The major product P formed in the following reaction is

Cycloheptatrienyl cation is

The correct order of increasing reactivity of the following alkyl halides, CH$_3$CH$_2$CH(Br)CH$_3$ (I), CH$_3$CH$_2$CH$_2$Br (II), (CH$_3$)$_2$CClCH$_2$CH$_3$ (III) and CH$_3$CH$_2$CH$_2$Cl (IV) towards S$_N$2 displacement is

The correct increasing order of the acid strength of acids, butyric acid (I), 2-chlorobutyric acid (II), 3-chlorobutyric acid (III) and 2,2-dichlorobutyric acid (IV) is

If the boiling point difference between the two liquids is not much, then ________ method is used to separate them.

Name of the following reaction is

Protein is a polymer made of

Lassaigne's test (with silver nitrate) is commonly used to detect halogens such as chlorine, bromine and iodine but not useful to detect fluorine because the product AgF formed is

Phenol is a highly corrosive substance, but its 0.2 per cent solution is used as

The letter ‘D’ in D-carbohydrates represents

The solution which does not produce precipitate when treated with aqueous K$_2$CO$_3$ is

Water gas is produced by

The volume of oxygen liberated at STP from 15 mL of 20 volume H$_2$O$_2$ is

When MnO$_2$ is fused with KOH and KNO$_2$, a coloured compound is formed. Choose the right compound with the appropriate colour

Identify the case(s) where there is change in oxidation number

Corundum is __________ mineral of aluminium.

The inert gas found most abundant in the atmosphere is

Select the most appropriate statement. In BF$_3$

When potassium is reacted with water, which compound(s) is (are) formed preferentially?

Which of the following is covalent?

One mole of an unknown compound was treated with excess water and resulted in the evolution of two moles of a readily combustible gas. The resulting solution was treated with CO$_2$ and resulted in the formation of white turbidity. The unknown compound is

Purification of aluminium by electrolytic refining is called

The compound Na$_2$CO$_3 \cdot x$H$_2$O has 50 % H$_2$O by mass. The value of $x$ is

Consider the equilibrium obtained by electrically connecting zinc-amalgam (Zn(Hg)) and HgO electrodes in mercury cell, $ \text{Zn(Hg)} + \text{HgO(s)} \rightleftharpoons \text{ZnO(s)} + \text{Hg(l)} $. Under this equilibrium, what is the relation between the potential of the Zn(Hg) and HgO electrodes measured against the standard hydrogen electrode?}