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Chemistry
List of top Chemistry Questions asked in COMEDK UGET
The reaction:
\[ \text{ArN}^{+} \text{Cl}^{-} \xrightarrow{\text{Cu/HCl}} \text{ArCl} + N_2 + \text{CuCl} \]
is called as:
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Haloalkanes and Haloarenes
The total number of nodes is given by:
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Structure of atom
In the equilibrium, \( AB \rightleftharpoons A + B \), if the equilibrium concentration of A is double, then the equilibrium concentration of B will be:
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Equilibrium
Find the correct order of \( \text{C} - \text{O} \) bond length among \( \text{CO}, \text{CO}_3^{2-}, \text{CO}_2 \).
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Chemical bonding and molecular structure
Which of the following amino acids \( \text{NH}_2 \text{CH} \text{RCOOH} \) contains a polar R group?
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Proteins
Which of the following is used as a drug to reduce fever?
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Chemistry in Everyday Life
Under which of the following conditions, the gases does not follow Henry's law?
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Raoult’s Law and Henry’s Law
An aqueous solution of \( X \) on addition of hydrogen peroxide in ice-cold conditions gives blue colour to the ethereal layer. Then, \( X \) can be:
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Ions
Determine the specific rate constant of the reaction. If the half-life period of a first-order reaction is 1402 s, then the rate constant is:
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Chemical Kinetics
Which one of the following sets of monosaccharides forms sucrose?
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Carbohydrates
Carbon monoxide is poisonous to human beings because:
COMEDK UGET - 2021
COMEDK UGET
Chemistry
Human health and disease
An endothermic reaction is found to have
$+ve$
entropy change. The reaction will be
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Thermodynamics
Which of the following equations give ionic product of water? (i)
$ { NH_{3(aq)} + H_2 O <=> NH^+_{4(aq)} + OH^{-}_{(aq)}}$
(ii)
$ { NH^+_{4(aq)} + H_2 O <=> H_3O^+ + NH_{3(aq)}}$
(iii)
$ { NH^{-}_{2(aq)} + H_2 O <=> NH_{3(aq)} + OH^-}$
(iv)
$ { NH_{3(aq)} + OH^{-}_{(aq)} <=> NH^{-}_{2(aq)} + H_2O}$
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Equilibrium
Pick the incorrect statement among those given below.
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Chemical bonding and molecular structure
A mixture of methylamine and dimethylamine is given to you. The reagents used to separate the components of the mixture are
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Amines
For an adiabatic change in a system, the condition which is applicable will be
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Thermodynamics
The decreasing order of stability of oxides of halogen is
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Group 17 Elements
The numbers of
$ {H^+}$
ions present in 1 mL of a solution whose pH is 13
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Equilibrium
Which of the following compounds is responsible for depletion of ozone layer?
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Haloalkanes and Haloarenes
$\lambda^{\circ}_m$
for
$ {NH_4Cl, NaOH}$
and
$ {NaCl}$
are
$130, 248$
and
$ {126.5\, ohm^{-1} \, cm^2 \, mol^{-1}}$
respectively. The
$\lambda^{\circ}_m$
of
$ {NH_4OH}$
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Electrochemistry
Consider the acid strength of the carboxylic acids: (i)
$ {PhCOOH}$
(ii)
$o - { NO_2C_6H_4COOH}$
(iii)
$p- {NO_2C_6H_4COOH}$
(iv)
$m- {NO_2C_6H_4COOH}$
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Aldehydes, Ketones and Carboxylic Acids
Sulphur sol is an example of
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Colloids
Gabriel phthalimide synthesis is used for the preparation of
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Amines
The mass of oxygen gas which occupies
$5.6$
litres at STP would be
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Stoichiometry and Stoichiometric Calculations
Sodium rosinate is generally added in the soap because it
COMEDK UGET - 2015
COMEDK UGET
Chemistry
soaps
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