List of top Chemistry Questions asked in COMEDK UGET

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
Sulphur sol is a type of
The unstable intermediate dichlorocarbene $ {[:CCl_2]}$ is formed during
$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
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
When $2$-bromopentane is heated with alcoholic solution of potassium hydroxide, the major product obtained is
Van't Hoff factors of equimolal solutions of sodium chloride, barium chloride and glucose in water are
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} $
Schottky defect in crystals is observed when
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
An orbital with $n = 3, l = 1$ is designated as
A crystalline solid has $A^-$ ions at the corners and face centres whereas $B^+$ ions are at the body centre and edge centres of the unit cell. The simplest formula of the compound will be
Among the following compounds, the only one which is not an. artificial sweetening agent is
For $S_N1$ reaction, the order of reactivity of haloalkanes is
Atomic numbers of vanadium, chromium, nickel and iron are $23, 24, 28$ and $26$ respectively. Which one of these is expected to have the highest second ionization enthalpy?
Rain water is called acid rain when its $pH$
The major product formed when alkyl iodide is treated with excess of ammonia
Among $2$-chloropropanoic acid, $3$-chloropropanoic acid, $2,2$-dichloroacetic acid and propanoic acid the $K_a$ values will be in the order,
$ {SO2 + 2H2S -> 3S + 2H2O}$ . This equation represents preparation of sulphur sol by
The complex $ {[Ag(NH_3)_2][Ag(CN)_2]}$ has the IUPAC name
The non existence of $PbI_4$ and $PbBr_4$ is due to