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Chemistry
List of top Chemistry Questions
The composition of a sample of wustite is
$Fe _{0.93} O$
. What percentage of the iron is present in the form of Fe (III)?
AIIMS - 2013
AIIMS
Chemistry
Stoichiometry and Stoichiometric Calculations
What would be the expected product of the reaction of propyne with
$ Br_{2}/H_{2}O$
if the mechanism of this reaction is analogous to that of propene?
AIIMS - 2013
AIIMS
Chemistry
Alkynes
When acidified
$K _{2} Cr _{2} O _{7}$
solution is added to
$Sn ^{2+}$
salts, then
$Sn ^{2+}$
changes to
AIIMS - 2013
AIIMS
Chemistry
Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
On commercial scale phenol is obtained from chlorobenzene. The chlorobenzene needed for the purpose is prepared byRaschig?? process. Which one of the following is Raschig?? process?
AIIMS - 2013
AIIMS
Chemistry
preparation of haloarenes
The strongest acid among the following is
AIIMS - 2013
AIIMS
Chemistry
Phenols
How many
$mL$
of
$0.125\, M \,Cr ^{3+}$
must be reacted with
$12.00 \,mL$
of
$0.200\, M\, MnO _{4}^{-}$
if the redox products are
$CrO _{7}^{2-}$
and
$Mn ^{2+}$
?
AIIMS - 2013
AIIMS
Chemistry
Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
At
$300 \,K , 36\, g$
of glucose present per litre in its solution has an osmotic pressure of
$4.98$
bar. If the osmotic pressure of solution is
$1.52$
bar at the same temperature, what would be its concentration?
AIIMS - 2013
AIIMS
Chemistry
Colligative Properties
According to Hardy schulze law, the flocculating power of an ion increases with
AIIMS - 2013
AIIMS
Chemistry
Surface Chemistry
Grignard reagents and organolithium compounds on addition to dry ice separately, followed by hydrolysis gives
AIIMS - 2013
AIIMS
Chemistry
Preparation
Hardening of leather in tanning industry is based on
Manipal - 2013
Manipal
Chemistry
Surface Chemistry
For isothermal expansion of an ideal gas, the correct combination of the thermodynamic parameters will be
WBJEE - 2013
WBJEE
Chemistry
Thermodynamics
Empirical formula of a compound is
$CH_2O$
and its molecular mass is
$90$
, the molecular formula of the compound is
KCET - 2013
KCET
Chemistry
Organic Chemistry- Some Basic Principles and Techniques
:
$p$
-chlorobenzoic acid is stronger acid than benzoic acid. : Chlorine has electron donating resonance
$(+ R )$
effect.
AIIMS - 2013
AIIMS
Chemistry
p -Block Elements
In diborane, the number of electrons that account for bonding in the bridges is
WBJEE - 2013
WBJEE
Chemistry
p -Block Elements
In borax the number of $B-O-B$ links and $B-OH$ bonds present are, respectively,
WBJEE - 2013
WBJEE
Chemistry
p -Block Elements
Which of the following is the weakest base?
AMUEEE - 2013
AMUEEE
Chemistry
GROUP 1 ELEMENTS
Which of the following sets of quantum numbers is not possible?
AMUEEE - 2013
AMUEEE
Chemistry
Structure of atom
Which one of the following is a strong base?
AMUEEE - 2013
AMUEEE
Chemistry
GROUP 1 ELEMENTS
Which one of the following is ferromagnetic?
AMUEEE - 2013
AMUEEE
Chemistry
The solid state
Who proposed dual nature of electron?
AMUEEE - 2013
AMUEEE
Chemistry
Structure of atom
Wilkinson's catalyst is used for
AMUEEE - 2013
AMUEEE
Chemistry
coordination compounds
Wurt'z reaction of methyl iodide yields an organic compound X. Which of the following reaction also yields X?
AMUEEE - 2013
AMUEEE
Chemistry
Hydrocarbons
The volume occupied by
$ 16\,g $
of oxygen gas at
$ STP $
is
AMUEEE - 2013
AMUEEE
Chemistry
Laws of Chemical Combinations
The magnitude of the charge on the electron is
$ 4.8 \times 10^{-10}\, esu $
. What is the magnitude of the charge on the proton on the nucleus of a helium atom ?
AMUEEE - 2013
AMUEEE
Chemistry
Electronic Configurations Of Elements And The Periodic Table
The degree of ionisation of
$HF$
in
$0.100\, M$
aqueous solution is (freezing point of the solution
$ =-0.197^{\circ} C $
and
$ K_{f} $
for water
$ =186^{\circ}C) $
AMUEEE - 2013
AMUEEE
Chemistry
Colligative Properties
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