List of top Chemistry Questions asked in JEE Advanced

Lyophilic sols are

Which gas is evolved when $PbO_2$ is treated with concentrated $HNO_3$?

A pale blue liquid obtained by equimolar mixture of two gases at $- 30^\circ\, C$ is

Which of the following will not be oxidised by $O_3$?

Which of the following $fcc$ structure contains cations in alternate tetrahedral voids?

A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI convert into orange colour solution. The cation of metal nitrate is

Arrange in order of increasing acidic strength

2-phenyl propene on acidic hydration, gives

The pair of compounds having metals in their highest oxidation state is

HX is a weak acid ( $ K_a = 10^{ - 5} $ ).lt forms a salt Na (0.1M) on reacting with caustic soda. The degree of hydrolysis of Na X is

0.004 MNa$_2SO_4$ is isotonic with 0.01 M glucose. Degree of dissociation of Na$_2SO_4$ is

For a first order reaction, $(A)\to $ product. Concentration of $A$, changes from $0.1\, M$ to $0.025 \,M$ in $40$ minutes the rate of reaction of when concentration of $A$ is $0.01 \,M$ is :

Which of the following pairs give positive Tollen's test?

The methods chiefly used for the extraction of lead and tin from their ores are respectively

The compound having tetrahedral geometry is

Spin only magnetic moment of the compound $Hg[Co(SCN)_4] $ is

A sodium salt of an unknown anion when treated with $ MgCl_2 $ gives white precipitate only on boiling. The anion is

2-Hexyne gives trans-2-hexene on treatment with

Which of the following has -O-O- linkage?

$(NH_4)_2Cr_2 O_7$ on heating gives a gas which is also given by

Spontaneous adsorption of a gas on solid surface is an exothermic process, because

When $I^-$ is oxidised by $MnO_4^-$ in alkaline medium, $I^-$ converts into

The correct statement(s) for orthoboric acid is/'are

Rate of physical adsorption increases with

Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite -