List of top Chemistry Questions asked in KCET

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 radioactive isotope has a half life of $10$ days. If today $125$ mg is left over, what was its original weight $40$ days earlier ?

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

A precipitate of $AgCl$ is formed when equal volumes of the following are mixed. $[K_S\, for\, AgCl = 10^{-10}]$

The standard electrode potential is measured by

Gold is extracted by hydrometallurgical process, based on its property

Which of the particles cannot be accelerated?

In blast furnace iron oxide is reduced by

The rate at which a substance reacts depends on its

A buffer solution has equal volumes of $0.2M \, NH_4OH$ and $0.02\, M \, NH_4 Cl$. The $p^{kb}$ of the base is $5$. The $pH$ is

Alum is a water purifier because it

Ethyl chloride on heating with $AgCN$, forms a compound $'X'$ . The functional isomer of $'X'$ is -

Which of the following pairs of elements cannot form an alloy ?

Which of these does not influence the rate of reaction?