More Flashcards
Pressure in a fluid in eq is same everywhere. This principle is called
Pascal’s law
Dist b/n 2 consecutive nodes in a stationary wave
lambda/2
simple harmonic motion a max =
ω^2A = 4π^2 A/T^2
Surface energy formula
W = surface tension x effective area
Ques with temp and KE formula
KE = 3/2K(B)T
Ques relating freq, spring const with suspended masses
Time period T
freq = inv of T
V and a of particle in SHM
When V is max, a is 0
Q relating m, k, vel, Amplitude
v=Aω
ω=√k/m
Relating Vel,freq, T
V = √T/myu
Freq prop to Vel
Aniline gives blue with
hot FeSO4 sol
Benzene sulphonic acid gives violet with
Sodium nitroprusside
Thiourea gives red with
FeCl3
Which shows cis trans? pentene, but2ene, butene, propene
But2ene
Ppt in Carius method for S is
BaSO4
c6h6 + isobutylchloride(AlCl3) –>
2-methyl, 2-phenylpropane
ch3br + oh –> ch3oh + br depends on conc of
ch3br & oh
camphor & benzene seperated by
chemical method
Which C-C is strongest?
sp-sp
Use of H2SO4 & HNO3 in nitration of benzene
H2SO4 acts as acid & HNO3 as base to produce NO2+
Glycosidic link b/n C1 of a-glucose & C2 of B-fructose
Sucrose
No reagent required for ppt of
Mg2+
Physical prop of carbonyl cmpd
All aldehydes are soluble in benzene
Higher aldehydes are more fragrant
Which cmpd doesn’t give red ppt with Fehling?
benzaldehyde
Cmpd that gives tribromo derivative with Br2 water
m-methylphenol
Lactose contains _____ OH groups
8
Does lactose show mutarotation?
Yes
which is stronger acid? m-methoxyphenol or p-methoxyphenol
m-methoxyphenol
Methoxy exerts +R effect at
o & p
Which doesn’t respond to cannizaro
Cl3CCHO
Which gas has smell of rotten eggs on action with H2SO4
SO2
H2O, H2S, BF3 dipole moment order?
BF3<H2S<H2O
mass of a molecule of water
3/10^26kg
Second e’ gain enthalpy of all elements is always
+ve
max no of e’s with same spin quantum no
2l + 1
Mg2+, Na2+, Ne, F-, O^2- ionic radii order
Mg2+<Na+<Ne<F-<O2-
e’ -veity of N, C, Si, P
Si<P<C<N
Conjugate base of OH
O2-
B,Al, Ga,In atomic size order
B<Ga<Al<In
Atomic no 113 is
Nihonium
I.E connecting freq
E/N = h nyu
O2, F2,C2,N2 has bond order 2 and is paramagnetic?
O2
pOH =
14 - pH
Thallium shows +1 due to
I.P.E
For which, Bohr theory doesn’t apply?
Na+
Li, Be, B, C which has highest IE?
C
Bond of F due to
pp overlap
Max H bonds in water
4
It is possible to liquefy a gas
at critical temp & at a press equal to critic temp
Evaporation of liq is accompanied by
Increase in entropy
Conjugate base of H2PO4 -
HPO4 2-
Which hydride is e’ deficient
B2H6
Alkali metal that reacts with N directly to form nitride is
Li
Sodium carbonate is prep by
Solvay proc
aq sol of borax is
basic
Na fusion with acetic acid + Pb acetate gives black for
S
Non viable pollutant
dust
no of atom in 1 body centered cubic unit cell is
2
Which defect causes decrease in denstity of crystal?
Schottky
If Cu is in FeSO4 which will ppt?
no rn
Which is not an ore of iron?
Cassiterite
Slag during extraction of Cu from Cu pyrites is
FeSiO3
Strongest base among NH3, PH3, AsH3, SbH3?
NH3
HgO, KMnO4, (NH4)2Cr2O7, KClO3 which doesn’t give O on heat?
(NH4)2Cr2O7
Which X is used in prep of aqua regia?
HCl
vander waals force strongest for which inert gas?
Xe
Solubility of Silver bromide in hypo sol is due to
[Ag(S2O3)2]3-
Actinides showing +7 are
Np, Pu
Polythene is a
thermoplastic
Which is a bacteriostatic?
Erythromycin
Detergent used in hair conditioners
cetyl trimethyl ammonium bromide
Antiseptic dettol which is mix of terpineol is
chloroxylenol
Which expt is responsible to find out charge of e’?
Millikan’s oil drop
Monovalency of grp 13 can be explained by
I.P.E
O, S, F, Cl e’ gain enthalpy order
O<S<F<Cl
At no 114 belong to
C family
Paper chromatography principle
Partition
Conjugate base for H2O & HF are
OH and F-
Can octet rule explain shape & relative stability
No
N is less active due to
High dissociation energy
P4 converted to P2 due to
p pi- p pi bond is weak
Hardest lanthanide
Sm
Oxidising power of Cr2O7, MnO4, VO2
(MnO4)->(Cr2O7)2->VO2+
Increase in molar conductance of strong electrolyte is due to
increase in ionic mobility of ions
Dimentional formual of latent heat
L^2/T^2
Instantaneous power delivered to damped harmonic oscillator by ext periodic force under steady state conditions is
+ve
Speed of transverse wave
v = √stress/density
Amplitude of damping oscillator _______ with time
decreases
Speed of a body thrown upward depends on
direction of propagation
Acc to Archimedes princ, weight of body =
weight of fluid displaced
Which doesn’t change wiht time for a body falling?
Horizontal cmpnt of vel
Shear moduli denoted by
η = sigma/shear stain sigma for shear stress
For ideal gas, the specific heat at constant pressure Cp
is greater than Cv because
There is a finite work done by the gas on the environment when its temperature is increased while the
pressure remains constant
coefficient of viscosity is denoted by
η
Ratio of specific heat means
Cp/Cv = gamma
KE of rotation
1/2mv^2 K^2/R^2
First eq of rotational motion
ω = ω(o) + αt
The total energy of an artificial satellite of mass m revolving in a circular orbit around the earth with a speed
v is
-KE
Change in vol expansion is
V[γ(l) - γ(s)]ΔT
When YDSE is held in liq of RI μ, β =
β/μ
From A,B if B is completely polarised, its angle is called
Brewster angle
device used to convert energy from one form to another form
transducer
The density of the nucleus is independent of
mass number
The de-Broglie wavelength of the electron in the nth orbit of hydrogen atom is
inversely proportional to n
If copper and silicon pieces are heated, the resistance of
copper will increase and silicon will decrease
in AM transmission, the bandwidth of
the filter and amplifer is
2ω
Magnetic susceptibility χ(m) =
I/H
magnification for compound microscope
LD/f(o)f(e)
Then the number of relations from A to B is
2^n(A×B)
If the domain of a function is either R or a subset of R, then it is called a K. Here K refers to
Real fn
Principle of mathematical induction is used
to prove that statements which are formulated interms of n, n is positive integer
number of permutations of n different things taken r at a time, when the repetition is allowed is
n^r
(a+b)^n =
nCr a^(n-r) b^r
A binary operation * on the set X is called commutative, if for every a,b
a * b = b *a
random error can be decreased by
increasing the number of readings and averaging them
skew symmetric matrix then the diagonal elements of A are
0
In an n-type semiconductor, the fermi energy level lies
in the forbidden energy gap nearer to the conduction band
For a Zener diode, what is doped?
both n and p
Zeroth law of thermodynamics leads to the concept of
temp
Carnot cycle of a reversible heat engine consists of
two isothermal and two adiabatic processes
During B emission
neutron in the nucleus decays emitting an electron
a moderator in nuclear reactors?
Heavy water
The group-2 element that form predominantly covalent oxide and covalent halides is
Be
Li shows diagonal relationship with
Mg
When steam is passed through red hot coke, the pair of substances formed are
CO and H2
NH2 shows which effect?
+M
In the extraction of iron from haematite, limestone is added as
flux
Which among the following is used a food preservative?
A) Sodium benzoate B) formic acid C) trichloro methane 4) iodoform
Sodium benzoate
Europium belongs to
f block
Dacron is an example of
polyester
Chloramphenicol is an
antibiotic
enhances lathering property of a soap?
Sodium rosinate
De Broglie wavelength of an electron travelling at the speed of light would be:
2.43 pm
H, S, Cl, O, F order of electronegativity is:
H<S<Cl<O<F
The oxidation state of Cr in CrO5
is:
6
hybridization of C in diamond is
sp3
The C2-C3 bond length in propene is less than o
1.54 A due to
Hyperconjugation
In the estimation of nitrogen by Duma’s method the nitrometer contains
aq. KOH
Which of the following has no f electron in the zero oxidation state get it is an f–block element?
Th
Total no. of tripeptides than can be prepared using 3 different aminoacids
6
5p, 4f, 6s, 5d order of increasing energy of atomic orbitals is
5p < 6 s < 4f < 5d
Which is true both for B and Al?
They burn in oxygen to give oxides at high temperature
Their halides are lewis acids
They combine with nitrogen to form nitrides
(CH3)3CH –> KMnO4
(CH3)3COH
Henry’s constant and solubility relation
inverse
NH3, PH3, AsH3, SbH3, BiH3 sequence of increasing boiling point
PH3<AsH3<NH3<SbH3<BiH3
Direction for cross product using
Right hand thumb rule
Angle of refraction and brewster’s/polarizing angle relation
r = 90 - i(polar)
Deviation angle and i(polar) relation
d = i(p) - r
Angular momentum eqn
I omega
(Omega)³ =
1
(Omega)⁴ =
Omega
(Omega)⁸
(Omega)²
Sum of n odd nos
n²
Sum of n natural nos
n(n+1)/2
if nCa = nCb then
a=b or a+b=n
sinø.sin(60-ø).sin(60+ø) =
¼sin3ø
If 2 circles cut orthogonally
2g1g2 + 2f1f2 = C1+C2
To find center of ellipse, circle and hyperparabola
Partially differentiate
