New Concepts/Shortcuts 5 Flashcards
what is added to the sodium extract before the addition of
silver nitrate for testing of halogens and why
Nitric acid
because if CN– or S2– are present then they will be oxidised and removed before the test of halides
how would we find the field at a distance r!?
first find the charge enclosed in that range awdn then find the fied wit hthe formula below
stability order if there is a case of intramolecular hydrogen bonding in the conformation of butane
what does chromatography uses?
Al2O3
what to do if we have to find if a function has a zero between a particular given range
charge produced in a changing flux formula
and how does it depends on the time
it is independent of time
damped oscillation equation(differential form)
whats the formula for finding e
e=kx
where k is the potential gradient
write the general equation for this condition
the potential difference will be the same across the points
What’s the resistance of an ideal ammeter?!
zero
shortcut for finding the remainder of large numbers in powers
put the remainder obtained by putting only the number by the denominator and then multiply it with the number of times of power
if its -ve subtract it from the divisor
what’s the shortcut to finding the general term in an SNS
what does an electronic spectrum’s single broad peak represent?
it represents the max crystal field splitting energy (delta)
how much energy does a single electron of t2g orbital have?
-0.4 delta
for what kind of N compounds does Kjeldahl’s method doesn’t works!?
nitro-grp
N in a part of a ring
diazonium
closed organ pipe nth overtone formula and fundamental frequency formula
and velocity of sound formula in terms of density,pressure and in terms R and T
what’s the difference in 2 consecutive resonating tube length
taylor’s method for finding w, the time period
find the restoring force and differentiate it with respect to x and boom
what does this mean?!
this means the vector joining (Z1 and Z3) and (Z1 and Z2) are perpendicular and are equal in lentgh
surface charge density of semiconductor including holes and electrons
non zero and uniform
what does the degree of flatness mean in conic sections?
eccentricity
how to find the image of a parabola
Find the image of the vertex! then sub it in the equation of shifted parabola where the constant(4a) will be same! just sub the vertex x-x’, y-y’ as Y^2=4AX
the boiling point of HC relation with H bonding types
its directly proportional to inter molecular H bonding
glucose with Br2 water forms?!
MOI of an equilateral triangle plane lamina
nitrile action with grignard reagent?
with partial hydrolysis
the average value of
sin x
cos x
sin^2 x
cos^2 x
f(g(x))=
ig g(x) is inverse of f(x)
f(g(x))=x
whats the electronic config of Fe+?!
equilibrium constant relation with temperature and enthalpy and entropy
1 molar is more/less concentrated than 1 molal solutions
more concentrated
the disslution of gas in liquid is exo or endo
exothermic
when does the maximum compression or elongation occur in the spring?
when the velocity of both the mass is equal
angle made by the resultant of two vectors formula
V max on a banked road formula
net permeablility constant formula
the time period of oscillation of a period of oscillation of compass needle
displacement current formula
