List of top Chemistry Questions asked in KCET

In the electrolysis of acidulated water, it is desired to obtain $1.12\, cc$ of Hydrogen per second under $S.T.P.$ condition. The current to be passed is
$10^{-6}\, M\, NaOH$ is diluted $100$ times. The $pH$ of the diluted base is
A bivalent metal has an equivalent mass of $32$. The molecular mass of the metal nitrate is
Among the following, the compound that contains ionic, covalent and coordinate linkage is
The enthalpy of formation of $NH_3$ is $- 4 6\, kJ \, mol^{-1}$. The enthalpy change for the reaction : $2 NH _{3}(g) \longrightarrow N _{2}(g)+3 H _{2}(g)$ is
The r.m.s. velocity of molecules of a gas of density $4 \,kg \,m^{-3}$ and pressure $1.2 \times10^{5} Nm^{-2}$ is
$30\, cc$ of $\frac {M}{3}\, HCl, 20\, cc$ of $\frac {M}{N} HNO_3$ and $40\, cc$ of $\frac {M}{4}$ $NaOH$ solutions are mixed and the volume was made up to $1\, dm^3$. The $pH$ of the resulting solution is
The electrophile involved in the sulphonation of Benzene is
Cooking is fast in a pressure cooker, because
Methoxy methane and ethanol are
Helium is used in balloons in place of hydrogen because it is
An octahedral complex is formed when hybrid orbitals of the following type are involved
The monomers of Buna-$S$ rubber are
Which metal has a greater tendency to form metal oxide ?
The number of nodal planes present in $\sigma^* \, s$ antibonding orbitals is
A complex compound in which the oxidation number of a metal is zero is
In the brown ring test, the brown colour of the ring is due to
A compound is formed by elements $A$ and $B$. This crystallises in the cubic structure where the $A$ atoms are at the corners of the cube and $B$ atoms are at the body centers. The simplest formula of the compound is
An element with atomic number $21$ is a
Amines behave as
For the reaction $Fe_2O_3 +3CO \rightarrow 2Fe + 3CO_2$ the volume of carbon monoxide required to reduce one mole of ferric oxide is
A gas deviates from ideal behaviour at a high pressure because its molecules
The monomers of buna-$S$ rubber are
Mesomeric effect involves delocalisation of
The calculated bond order of superoxide ion $(O_2^- )$ is