List of top Chemistry Questions asked in KCET

In the conversion of $$Br_2$$ to $$BrO^-_3$$, the oxidation number of $$Br$$ changes from

$$\Delta G ^ \circ \,Vs\, T$$ plot in the Ellingham's diagram slopes downwards for the reaction

Which of the following reaction taking place in the Blast furnace is endothermic ?

Which of the following can participate in linkage isomerism ?

Which of the following is not an ore of magnesium?

When a quantity of electricity is passed through $$CuSO_4$$ solution, $$0.16\, g$$ of Copper gets deposited. If the same quantity of electricity is passed through acidulated water, then the volume of $$H_2$$ liberated at $$STP$$ will be [Given $$At. Wt. Cu = 64$$]

Which of the following does not conduct electricity ?

Which of the following represents the Lewis structure of $$N_2$$ molecule ?

The formation of $$O^{+}_2 [P_t F_6 ]^-$$ is the basis for the formation of Xenon fluorides. This is because

Among the alkali metals cesium is the most reactive because

An organic compound which produces a bluish green coloured flame on heating in presence of copper is

The atomic numbers of $$Ni$$ and $$Cu$$ are $$28$$ and $$29$$ respectively. The electron configuration $$Is^2 2s^2 2p^6 3s^2 3p^6 3d^{10}$$ represents

$$4$$ moles each of $$S O_{2}$$ and $$O_{2}$$ gases are allowed to react to form $$SO_{3}$$ in a closed vessel. At equilibrium $$25 \%$$ of $$O_{2}$$ is used up. The total number of moles of all the gases present at equilibrium is

The formula mass of Mohr's salt is $$392$$. The iron present in it is oxidised by $$KMnO_4$$ in acid medium. The equivalent mass of Mohr's salt is

The mass of glucose that should be dissolved in $$50\, g$$ of water in order to produce the same lowering of vapour pressure as is produced by dissolving $$1\, g$$ of urea in the same quantity of water is

The decomposition of a certain mass of $$CaCO_3$$ gave $$11.2\, dm^3$$ of $$CO_2$$ gas at $$STP$$. The mass of $$KOH$$ required to completely neutralise the gas is

The brown ring test for nitrates depends on

Glucose contains in addition to aldehyde group

An example for autocatalysis is

Liquor ammonia bottles are opened only after cooling. This is because

A mixture of two moles of carbon monoxide and one mole of oxygen, in a closed vessel is ignited to convert the carbon monoxide to carbon dioxide.If $$\Delta H$$ is the enthalpy change and $$\Delta E$$ is the change in internal energy, then,

The reaction in which phenol differs from alcohol is:

For the reaction $$N_{2(s)}+O_{2(s)} \rightleftharpoons 2 N O_{(g)}$$, the value of $$K_{c}$$ at $$800^{\circ} C$$ is $$0.1 .$$ When the equilibrium concentrations of both the reactants is $$0.5 \,mol$$, what is the value of $$K_{P}$$ at the same temperature?

A commercial sample of hydrogen peroxide is labelled as 10 volume. Its percentage strength is nearly