>
Chemistry
List of top Chemistry Questions
In reference to biological role,
$Ca^{2+}$
ions are important in
NEET (UG) - 1996
NEET (UG)
Chemistry
Biomolecules
Among the following oxides, the least acidic is
NEET (UG) - 1996
NEET (UG)
Chemistry
p -Block Elements
Cuprous compounds such as
$CuCl, CuCN$
and
$CuSCN$
are the only salts stable in
$H_2O $
due to
NEET (UG) - 1996
NEET (UG)
Chemistry
d -and f -Block Elements
What is the molarity of
$H_2SO_4$
solution that has a density of 1.84 g/cc at 35
$^\circ$
C and contains 98% by weight ?
NEET (UG) - 1996
NEET (UG)
Chemistry
Solutions
Cyclopropane and oxygen at partial pressures 170 torr and 570 torr are mixed in a gas cylinder. What is the ratio of the number of moles of cyclopropane to the number of moles of oxygen?
NEET (UG) - 1996
NEET (UG)
Chemistry
States of matter
Synthetic polymer which resemble natural rubber is
BCECE - 1996
BCECE
Chemistry
Types of Polymerisation Reactions
A 5 A current is passed through a solution of zinc sulphate for 40 min. The amount of zinc deposited at the cathode is
NEET (UG) - 1996
NEET (UG)
Chemistry
Electrochemistry
0.24 g of a volatile gas, upon vaporisation, gives 45 mL vapour at NTP. What will be the vapour density of the substance ? (Density of
$ H_2 = 0.089$
)
NEET (UG) - 1996
NEET (UG)
Chemistry
Some basic concepts of chemistry
The energy of a hydrogen atom in its ground state is - 13.6 eV. The energy of the level corresponding to the quantum number n = 2 in the hydrogen atom is
AIPMT - 1996
AIPMT
Chemistry
Bohr’s Model for Hydrogen Atom
The momentum of a particle having a de-Broglie wavelength of
$10^{17}$
m is (Given,
$h = 6.625 \times 10^{-34}$
m)
NEET (UG) - 1996
NEET (UG)
Chemistry
Structure of atom
During dialysis
NEET (UG) - 1996
NEET (UG)
Chemistry
Surface Chemistry
Nylon-66 is a polyamide obtained by the reaction of
NEET (UG) - 1996
NEET (UG)
Chemistry
Polymers
An element (atomic mass
$100 \,g /\, mol$
) having
$BCC$
structure has unit cell edge
$400\, pm$
. The density of element is (No. of atom in
$BCC ( Z )=2$
).
NEET (UG) - 1996
NEET (UG)
Chemistry
The solid state
Commonly used antiseptic -Dettol- is a mixture of
NEET (UG) - 1996
NEET (UG)
Chemistry
Biomolecules
Which of the following has zero dipole moment?
NEET (UG) - 1996
NEET (UG)
Chemistry
Hydrocarbons
Which of the following bonds has the highest energy?
NEET (UG) - 1996
NEET (UG)
Chemistry
p -Block Elements
Boron compounds behave as Lewis acids, because of their
NEET (UG) - 1996
NEET (UG)
Chemistry
p -Block Elements
Which of the following is the correct equation?
NEET (UG) - 1996
NEET (UG)
Chemistry
Thermodynamics
What will be the longest wavelength line in Balmer series of spectrum?
NEET (UG) - 1996
NEET (UG)
Chemistry
Structure of atom
The isotonic solutions have equal:
JIPMER - 1996
JIPMER
Chemistry
Colligative Properties
What happens when chloroform is left open in air in the presence of sunlight?
AIIMS - 1996
AIIMS
Chemistry
Haloalkanes and Haloarenes
Arrange the following compounds in order of increasing dipole moment, toluene (I), m-dichlorobenzene (II), o-dichlorobenzene (III),p-dichlorobenzene (IV)
JEE Advanced - 1996
JEE Advanced
Chemistry
Properties of benzene
The ratio between the root mean square speed of
$H_2$
at 50 K and that of
$O_2$
at 800 K is
JEE Advanced - 1996
JEE Advanced
Chemistry
States of matter
Which of the following is not an explosive?
JIPMER - 1996
JIPMER
Chemistry
Amines
The reaction,
$ {{C}_{6}}{{H}_{5}}{{N}_{2}}Cl\xrightarrow{C{{u}_{2}}C{{l}_{2}}/HCl}{{C}_{2}}{{H}_{5}}Cl+{{N}_{2}}\uparrow $
is called:
JIPMER - 1996
JIPMER
Chemistry
Methods of Preparation of Haloalkanes
Prev
1
...
525
526
527
528
529
...
727
Next