List of top Chemistry Questions asked in COMEDK UGET

The correct increasing order of basic strength of following amines, $ {C2H5NH2, NH3, (C2H5)2NH, C6H5NH2}$ in gaseous state is
The magnetite ore is
For an adiabatic change in a system, the condition which is applicable will be
An endothermic reaction is found to have $+ve$ entropy change. The reaction will be
For one mole of $ {NaCl_{(s)}}$ the lattice enthalpy is
$ {Pb_3 O_4 + 4HNO_3 -> 2Pb(NO_3)_2 + PbO_2 + 2H_2O }$ Which is true about the lead ions in $ {Pb_3O_4}$ ?
Which of the following pairs has the same size?
Which of the following chemicals does not liberate hydrogen gas on reaction with aluminium metal?
In the metallurgy of aluminium when the fused matrix is electrolyzed, the overall reduction reaction is
Hybridized state of bromine in bromine pentafluoride is
Carbon monoxide forms volatile compound with
An element belonging to chalcogen group is
Energy associated with the first orbit of $ {He^+}$ is
One mole of $PCl_5$ is heated in a closed 2 $dm^3$ vessel. At equilibrium 40% $PCl_5$ is dissociated. Calculate the equilibrium constant.
Sulphur sol is a type of
A 150 watt bulb emits light of wavelength 6600 $?$ and only 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?
In the following sets of ions, which one is not isoelectronic with the rest of the species? $ { O^{2-}, F^- , Na, Mg^{2+}, Al^{3+}, Ne} $
$aP + bQ \to $ Products, when $[P]$ is doubled keeping $[Q]$ constant rate increases $2$ times, when $[P]$ is constant and $[Q]$ is doubled, rate increases four times. The overall order is
When $2$-bromopentane is heated with alcoholic solution of potassium hydroxide, the major product obtained is
Schottky defect in crystals is observed when
Van't Hoff factors of equimolal solutions of sodium chloride, barium chloride and glucose in water are
Vapour pressure of water at $293\, K$ is $17.535\, mm \,Hg$. The vapour pressure of water at $293 \,K$ containing $25 \,g$ of glucose dissolved in $450\, g$ of water is
The radius of an atom is $300\,pm$. If it crystallizes in a face-centered cubic lattice, length of the edge of the unit cell is
The unstable intermediate dichlorocarbene $ {[:CCl_2]}$ is formed during
An orbital with $n = 3, l = 1$ is designated as