More Flashcards
1
Q
Pressure in a fluid in eq is same everywhere. This principle is called
A
Pascal’s law
2
Q
Dist b/n 2 consecutive nodes in a stationary wave
A
lambda/2
3
Q
simple harmonic motion a max =
A
ω^2A = 4π^2 A/T^2
4
Q
Surface energy formula
A
W = surface tension x effective area
5
Q
Ques with temp and KE formula
A
KE = 3/2K(B)T
6
Q
Ques relating freq, spring const with suspended masses
A
Time period T
freq = inv of T
7
Q
V and a of particle in SHM
A
When V is max, a is 0
8
Q
Q relating m, k, vel, Amplitude
A
v=Aω
ω=√k/m
9
Q
Relating Vel,freq, T
A
V = √T/myu
Freq prop to Vel
10
Q
Aniline gives blue with
A
hot FeSO4 sol
11
Q
Benzene sulphonic acid gives violet with
A
Sodium nitroprusside
12
Q
Thiourea gives red with
A
FeCl3
13
Q
Which shows cis trans? pentene, but2ene, butene, propene
A
But2ene
14
Q
Ppt in Carius method for S is
A
BaSO4
15
Q
c6h6 + isobutylchloride(AlCl3) –>
A
2-methyl, 2-phenylpropane
16
Q
ch3br + oh –> ch3oh + br depends on conc of
A
ch3br & oh
17
Q
camphor & benzene seperated by
A
chemical method
18
Q
Which C-C is strongest?
A
sp-sp
19
Q
Use of H2SO4 & HNO3 in nitration of benzene
A
H2SO4 acts as acid & HNO3 as base to produce NO2+
20
Q
Glycosidic link b/n C1 of a-glucose & C2 of B-fructose
A
Sucrose
21
Q
No reagent required for ppt of
A
Mg2+
22
Q
Physical prop of carbonyl cmpd
A
All aldehydes are soluble in benzene
Higher aldehydes are more fragrant
23
Q
Which cmpd doesn’t give red ppt with Fehling?
A
benzaldehyde
24
Q
Cmpd that gives tribromo derivative with Br2 water
A
m-methylphenol
25
Lactose contains _____ OH groups
8
26
Does lactose show mutarotation?
Yes
27
which is stronger acid? m-methoxyphenol or p-methoxyphenol
m-methoxyphenol
28
Methoxy exerts +R effect at
o & p
29
Which doesn't respond to cannizaro
Cl3CCHO
30
Which gas has smell of rotten eggs on action with H2SO4
SO2
31
H2O, H2S, BF3 dipole moment order?
BF3
32
mass of a molecule of water
3/10^26kg
33
Second e' gain enthalpy of all elements is always
+ve
34
max no of e's with same spin quantum no
2l + 1
35
Mg2+, Na2+, Ne, F-, O^2- ionic radii order
Mg2+
36
e' -veity of N, C, Si, P
Si
37
Conjugate base of OH
O2-
38
B,Al, Ga,In atomic size order
B
39
Atomic no 113 is
Nihonium
40
I.E connecting freq
E/N = h nyu
41
O2, F2,C2,N2 has bond order 2 and is paramagnetic?
O2
42
pOH =
14 - pH
43
Thallium shows +1 due to
I.P.E
44
For which, Bohr theory doesn't apply?
Na+
45
Li, Be, B, C which has highest IE?
C
46
Bond of F due to
pp overlap
47
Max H bonds in water
4
48
It is possible to liquefy a gas
at critical temp & at a press equal to critic temp
49
Evaporation of liq is accompanied by
Increase in entropy
50
Conjugate base of H2PO4 -
HPO4 2-
51
Which hydride is e' deficient
B2H6
52
Alkali metal that reacts with N directly to form nitride is
Li
53
Sodium carbonate is prep by
Solvay proc
54
aq sol of borax is
basic
55
Na fusion with acetic acid + Pb acetate gives black for
S
56
Non viable pollutant
dust
57
no of atom in 1 body centered cubic unit cell is
2
58
Which defect causes decrease in denstity of crystal?
Schottky
59
If Cu is in FeSO4 which will ppt?
no rn
60
Which is not an ore of iron?
Cassiterite
61
Slag during extraction of Cu from Cu pyrites is
FeSiO3
62
Strongest base among NH3, PH3, AsH3, SbH3?
NH3
63
HgO, KMnO4, (NH4)2Cr2O7, KClO3 which doesn't give O on heat?
(NH4)2Cr2O7
64
Which X is used in prep of aqua regia?
HCl
65
vander waals force strongest for which inert gas?
Xe
66
Solubility of Silver bromide in hypo sol is due to
[Ag(S2O3)2]3-
67
Actinides showing +7 are
Np, Pu
68
Polythene is a
thermoplastic
69
Which is a bacteriostatic?
Erythromycin
70
Detergent used in hair conditioners
cetyl trimethyl ammonium bromide
71
Antiseptic dettol which is mix of terpineol is
chloroxylenol
72
Which expt is responsible to find out charge of e'?
Millikan's oil drop
73
Monovalency of grp 13 can be explained by
I.P.E
74
O, S, F, Cl e' gain enthalpy order
O
75
At no 114 belong to
C family
76
Paper chromatography principle
Partition
77
Conjugate base for H2O & HF are
OH and F-
78
Can octet rule explain shape & relative stability
No
79
N is less active due to
High dissociation energy
80
P4 converted to P2 due to
p pi- p pi bond is weak
81
Hardest lanthanide
Sm
82
Oxidising power of Cr2O7, MnO4, VO2
(MnO4)->(Cr2O7)2->VO2+
83
Increase in molar conductance of strong electrolyte is due to
increase in ionic mobility of ions
84
Dimentional formual of latent heat
L^2/T^2
85
Instantaneous power delivered to damped harmonic oscillator by ext periodic force under steady state conditions is
+ve
86
Speed of transverse wave
v = √stress/density
87
Amplitude of damping oscillator _______ with time
decreases
88
Speed of a body thrown upward depends on
direction of propagation
89
Acc to Archimedes princ, weight of body =
weight of fluid displaced
90
Which doesn't change wiht time for a body falling?
Horizontal cmpnt of vel
91
Shear moduli denoted by
η = sigma/shear stain sigma for shear stress
92
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
93
coefficient of viscosity is denoted by
η
94
Ratio of specific heat means
Cp/Cv = gamma
95
KE of rotation
1/2mv^2 K^2/R^2
96
First eq of rotational motion
ω = ω(o) + αt
97
The total energy of an artificial satellite of mass m revolving in a circular orbit around the earth with a speed
v is
-KE
98
Change in vol expansion is
V[γ(l) - γ(s)]ΔT
99
When YDSE is held in liq of RI μ, β =
β/μ
100
From A,B if B is completely polarised, its angle is called
Brewster angle
101
device used to convert energy from one form to another form
transducer
102
The density of the nucleus is independent of
mass number
103
The de-Broglie wavelength of the electron in the nth orbit of hydrogen atom is
inversely proportional to n
104
If copper and silicon pieces are heated, the resistance of
copper will increase and silicon will decrease
105
in AM transmission, the bandwidth of
the filter and amplifer is
2ω
106
Magnetic susceptibility χ(m) =
I/H
107
magnification for compound microscope
LD/f(o)f(e)
108
Then the number of relations from A to B is
2^n(A×B)
109
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
110
Principle of mathematical induction is used
to prove that statements which are formulated interms of n, n is positive integer
111
number of permutations of n different things taken r at a time, when the repetition is allowed is
n^r
112
(a+b)^n =
nCr a^(n-r) b^r
113
A binary operation * on the set X is called commutative, if for every a,b
a * b = b *a
114
random error can be decreased by
increasing the number of readings and averaging them
115
skew symmetric matrix then the diagonal elements of A are
0
116
117
In an n-type semiconductor, the fermi energy level lies
in the forbidden energy gap nearer to the conduction band
118
For a Zener diode, what is doped?
both n and p
119
Zeroth law of thermodynamics leads to the concept of
temp
120
Carnot cycle of a reversible heat engine consists of
two isothermal and two adiabatic processes
121
During B emission
neutron in the nucleus decays emitting an electron
122
a moderator in nuclear reactors?
Heavy water
123
The group-2 element that form predominantly covalent oxide and covalent halides is
Be
124
Li shows diagonal relationship with
Mg
125
When steam is passed through red hot coke, the pair of substances formed are
CO and H2
126
NH2 shows which effect?
+M
127
In the extraction of iron from haematite, limestone is added as
flux
128
Which among the following is used a food preservative?
A) Sodium benzoate B) formic acid C) trichloro methane 4) iodoform
Sodium benzoate
129
Europium belongs to
f block
130
Dacron is an example of
polyester
131
Chloramphenicol is an
antibiotic
132
enhances lathering property of a soap?
Sodium rosinate
133
De Broglie wavelength of an electron travelling at the speed of light would be:
2.43 pm
134
H, S, Cl, O, F order of electronegativity is:
H
135
The oxidation state of Cr in CrO5
is:
6
136
hybridization of C in diamond is
sp3
137
The C2-C3 bond length in propene is less than o
1.54 A due to
Hyperconjugation
138
In the estimation of nitrogen by Duma’s method the nitrometer contains
aq. KOH
139
Which of the following has no f electron in the zero oxidation state get it is an f–block element?
Th
140
Total no. of tripeptides than can be prepared using 3 different aminoacids
6
141
5p, 4f, 6s, 5d order of increasing energy of atomic orbitals is
5p < 6 s < 4f < 5d
142
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
143
(CH3)3CH --> KMnO4
(CH3)3COH
144
Henry's constant and solubility relation
inverse
145
NH3, PH3, AsH3, SbH3, BiH3 sequence of increasing boiling point
PH3
146
Direction for cross product using
Right hand thumb rule
147
Angle of refraction and brewster's/polarizing angle relation
r = 90 - i(polar)
148
Deviation angle and i(polar) relation
d = i(p) - r
149
Angular momentum eqn
I omega
150
(Omega)³ =
1
151
(Omega)⁴ =
Omega
152
(Omega)⁸
(Omega)²
153
Sum of n odd nos
n²
154
Sum of n natural nos
n(n+1)/2
155
if nCa = nCb then
a=b or a+b=n
156
sinø.sin(60-ø).sin(60+ø) =
¼sin3ø
157
If 2 circles cut orthogonally
2g1g2 + 2f1f2 = C1+C2
158
To find center of ellipse, circle and hyperparabola
Partially differentiate
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