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questions
List of practice Questions
Boric acid is prepared from borax by the action of
Chemistry
p -Block Elements
Boron does not form
$B^{3+}$
ions whereas Al forms
$Al^{3+}$
ions. This is because
Chemistry
p -Block Elements
Bond order and magnetic moment of
$CO^+$
is
Chemistry
Chemical bonding and molecular structure
Bond order of N-O bonds in nitrate ion is
Chemistry
Chemical bonding and molecular structure
Bony labyrinth is filled with a fluid called
Biology
neural control and coordination
Bond dissociation energy of
$O_2(g) \, is \, x \, kJ \, mol^{-1}$
. This means that
Chemistry
Thermodynamics
Bond dissociation enthalpy of
$E?? (E =$
element
$)$
bonds is given below. Which of the compounds will act as strongest reducing agent ?
Chemistry
p -Block Elements
Boiling point of hydrogen fluoride is highest amongst
$HF$
,
$HCl$
,
$HBr$
and
$HI$
. Which type of intermolecular forces are present in hydrogen fluoride?
Chemistry
States of matter
Boiling points of the hydrogen halides
Chemistry
p -Block Elements
Bolting, i.a, internode elongation just prior to flowering in beet, cabbage and many rosette plants, is promoted by
Biology
plant growth and development
BOD is connected with
Chemistry
Environmental Chemistry
BOD of waste water is estimated by measuring the amount of
Biology
Microbes in human welfare
Bohr?? theory can also be applied to the ions like
Chemistry
Structure of atom
Boiling point of alcohol is comparatively higher than that of corresponding alkane due to
Chemistry
Alcohols, Phenols and Ethers
Blood may be purified by
Chemistry
Surface Chemistry
Blood pressure is defined as the force with which blood
Biology
body fluids and circulation
Blowing air with open mouth is an example of
Physics
kinetic theory
Bob
$A$
of a simple pendulum is released w hen the string makes an angle of
$45^\circ$
with vertical. It hits another
$bob\, B$
of same material and same mass kept at rest on table. If the collision is elastic
Physics
work, energy and power
Blister copper obtained during extraction from cuprous oxide is called so because
Chemistry
General Principles and Processes of Isolation of Elements
Block
$A$
of weight
$100\, N$
rests on a frictionless inclined plane of slope angle
$30^?$
as shown in the figure. A flexible cord attached to
$A$
passes over a frictionless pulley and is connected to block
$B$
of weight
$W$
. Find the weight
$W$
for which the system is in equilibrium.
Physics
laws of motion
Blood is a type of
Biology
Structural Organisation of Animals and plants
Bleaching action of
$ {SO_2}$
is due to
Chemistry
p -Block Elements
Bleaching action of
$SO_2$
is due to its
Chemistry
p -Block Elements
Which Indian plants have either been patented or attempts have been made to patent them by western nations for their commercial use?
Biology
Applications of Biotechnology
A motile fagellate asexual cell is called as
Biology
Reproduction in Organisms
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