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Chemistry
List of top Chemistry Questions asked in NEET (UG)
In a given atom no two electrons can have the same values of all the four quantum numbers. This is called
NEET (UG) - 1991
NEET (UG)
Chemistry
Structure of atom
A
$5$
molar solution of
$H_2SO_4$
is diluted from 1 litre to a volume of 10 litres, the normality of the solution will be
NEET (UG) - 1991
NEET (UG)
Chemistry
Some basic concepts of chemistry
The order of filling of electrons in the orbitals of an atom will be
NEET (UG) - 1991
NEET (UG)
Chemistry
Structure of atom
$P_2O_5$
is heated with water to give
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
The electronic configuration of Cu (at.no. = 29) is
NEET (UG) - 1991
NEET (UG)
Chemistry
Structure of atom
Pure nitrogen is prepared in the laboratory by heating a mixture of
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
$PH_4I + NaOH$
forms
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
The transition elements have a general electronic configuration.
NEET (UG) - 1991
NEET (UG)
Chemistry
d -and f -Block Elements
The relative lowering of the vapour pressure is equal to the ratio between the number of
NEET (UG) - 1991
NEET (UG)
Chemistry
Solutions
Root mean square velocity of a gas molecule is proportional to
NEET (UG) - 1990
NEET (UG)
Chemistry
States of matter
The tendency of
\(BF_3, BCI_3 \, and \, BBr_3\)
behave as Lewis acid decreases in the sequence
NEET (UG) - 1990
NEET (UG)
Chemistry
Acids and Bases
The complex ion
$[Co(NH_3)_6]^{3+}$
is formed by
$sp^3d^2$
hybridisation. Hence, the ion should possess
NEET (UG) - 1990
NEET (UG)
Chemistry
Hybridisation
An organic compound X(molecular formula C6H7O2N) has six carbon atoms in a ring system, two double bonds and a nitro group as substituent, X is
NEET (UG) - 1990
NEET (UG)
Chemistry
Organic Chemistry
Absolute zero is defined as the temperature
NEET (UG) - 1990
NEET (UG)
Chemistry
States of matter
Linear combination of two hybridised orbitals belonging to the two atoms, each having one electron leads to a
NEET (UG) - 1990
NEET (UG)
Chemistry
Chemical bonding and molecular structure
Which one shows maximum hydrogen bonding?
NEET (UG) - 1990
NEET (UG)
Chemistry
Chemical bonding and molecular structure
Which statement is not correct?
NEET (UG) - 1990
NEET (UG)
Chemistry
Chemical bonding and molecular structure
Among
$LiCl, BeCl_2, BCl_3 $
and
$CCl_4$
, the covalent bond character follows the order
NEET (UG) - 1990
NEET (UG)
Chemistry
Chemical bonding and molecular structure
In van der Waals equation of state for a non-ideal gas, the term that accounts for inter molecular forces is
NEET (UG) - 1990
NEET (UG)
Chemistry
States of matter
An ion has 18 electrons in the outermost shell, it is
NEET (UG) - 1990
NEET (UG)
Chemistry
Structure of atom
Boron has two stable isotopes,
$^{10}B (19 \%)$
and
$ ^{11}B (81\%)$
. Calculate average atomic weight of boron in the periodic table.
NEET (UG) - 1990
NEET (UG)
Chemistry
Some basic concepts of chemistry
If
$\Delta H$
is the change in enthalpy and
$\Delta E$
, the change in internal energy accompanying a gaseous reaction, then
NEET (UG) - 1990
NEET (UG)
Chemistry
Thermodynamics
The molecular weight of
$O_2$
and
$SO_2$
are 32 and 64 respectively. At
$15^{\circ}C$
and 150 mmHg pressure, 1L of
$O_2$
contains -N - molecules. The number of molecules in 2L of
$SO_2$
under the same conditions of temperature and pressure will be
NEET (UG) - 1990
NEET (UG)
Chemistry
Stoichiometry and Stoichiometric Calculations
The number of gram molecules of oxygen in
$6.02 \times 10^{24}$
CO molecules is
NEET (UG) - 1990
NEET (UG)
Chemistry
Mole concept and Molar Masses
The ability of a substance to assume in two or more crystalline structures is called
NEET (UG) - 1990
NEET (UG)
Chemistry
p -Block Elements
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