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1
Q

Pressure in a fluid in eq is same everywhere. This principle is called

A

Pascal’s law

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2
Q

Dist b/n 2 consecutive nodes in a stationary wave

A

lambda/2

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3
Q

simple harmonic motion a max =

A

ω^2A = 4π^2 A/T^2

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4
Q

Surface energy formula

A

W = surface tension x effective area

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5
Q

Ques with temp and KE formula

A

KE = 3/2K(B)T

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6
Q

Ques relating freq, spring const with suspended masses

A

Time period T
freq = inv of T

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7
Q

V and a of particle in SHM

A

When V is max, a is 0

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8
Q

Q relating m, k, vel, Amplitude

A

v=Aω
ω=√k/m

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9
Q

Relating Vel,freq, T

A

V = √T/myu
Freq prop to Vel

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10
Q

Aniline gives blue with

A

hot FeSO4 sol

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11
Q

Benzene sulphonic acid gives violet with

A

Sodium nitroprusside

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12
Q

Thiourea gives red with

A

FeCl3

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13
Q

Which shows cis trans? pentene, but2ene, butene, propene

A

But2ene

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14
Q

Ppt in Carius method for S is

A

BaSO4

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15
Q

c6h6 + isobutylchloride(AlCl3) –>

A

2-methyl, 2-phenylpropane

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16
Q

ch3br + oh –> ch3oh + br depends on conc of

A

ch3br & oh

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17
Q

camphor & benzene seperated by

A

chemical method

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18
Q

Which C-C is strongest?

A

sp-sp

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19
Q

Use of H2SO4 & HNO3 in nitration of benzene

A

H2SO4 acts as acid & HNO3 as base to produce NO2+

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20
Q

Glycosidic link b/n C1 of a-glucose & C2 of B-fructose

A

Sucrose

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21
Q

No reagent required for ppt of

A

Mg2+

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22
Q

Physical prop of carbonyl cmpd

A

All aldehydes are soluble in benzene
Higher aldehydes are more fragrant

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23
Q

Which cmpd doesn’t give red ppt with Fehling?

A

benzaldehyde

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24
Q

Cmpd that gives tribromo derivative with Br2 water

A

m-methylphenol

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25
Q

Lactose contains _____ OH groups

A

8

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26
Q

Does lactose show mutarotation?

A

Yes

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27
Q

which is stronger acid? m-methoxyphenol or p-methoxyphenol

A

m-methoxyphenol

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28
Q

Methoxy exerts +R effect at

A

o & p

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29
Q

Which doesn’t respond to cannizaro

A

Cl3CCHO

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30
Q

Which gas has smell of rotten eggs on action with H2SO4

A

SO2

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31
Q

H2O, H2S, BF3 dipole moment order?

A

BF3<H2S<H2O

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32
Q

mass of a molecule of water

A

3/10^26kg

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33
Q

Second e’ gain enthalpy of all elements is always

A

+ve

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34
Q

max no of e’s with same spin quantum no

A

2l + 1

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35
Q

Mg2+, Na2+, Ne, F-, O^2- ionic radii order

A

Mg2+<Na+<Ne<F-<O2-

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36
Q

e’ -veity of N, C, Si, P

A

Si<P<C<N

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37
Q

Conjugate base of OH

A

O2-

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38
Q

B,Al, Ga,In atomic size order

A

B<Ga<Al<In

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39
Q

Atomic no 113 is

A

Nihonium

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40
Q

I.E connecting freq

A

E/N = h nyu

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41
Q

O2, F2,C2,N2 has bond order 2 and is paramagnetic?

A

O2

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42
Q

pOH =

A

14 - pH

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43
Q

Thallium shows +1 due to

A

I.P.E

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44
Q

For which, Bohr theory doesn’t apply?

A

Na+

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45
Q

Li, Be, B, C which has highest IE?

A

C

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46
Q

Bond of F due to

A

pp overlap

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47
Q

Max H bonds in water

A

4

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48
Q

It is possible to liquefy a gas

A

at critical temp & at a press equal to critic temp

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49
Q

Evaporation of liq is accompanied by

A

Increase in entropy

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50
Q

Conjugate base of H2PO4 -

A

HPO4 2-

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51
Q

Which hydride is e’ deficient

A

B2H6

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52
Q

Alkali metal that reacts with N directly to form nitride is

A

Li

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53
Q

Sodium carbonate is prep by

A

Solvay proc

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54
Q

aq sol of borax is

A

basic

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55
Q

Na fusion with acetic acid + Pb acetate gives black for

A

S

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56
Q

Non viable pollutant

A

dust

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57
Q

no of atom in 1 body centered cubic unit cell is

A

2

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58
Q

Which defect causes decrease in denstity of crystal?

A

Schottky

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59
Q

If Cu is in FeSO4 which will ppt?

A

no rn

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60
Q

Which is not an ore of iron?

A

Cassiterite

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61
Q

Slag during extraction of Cu from Cu pyrites is

A

FeSiO3

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62
Q

Strongest base among NH3, PH3, AsH3, SbH3?

A

NH3

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63
Q

HgO, KMnO4, (NH4)2Cr2O7, KClO3 which doesn’t give O on heat?

A

(NH4)2Cr2O7

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64
Q

Which X is used in prep of aqua regia?

A

HCl

65
Q

vander waals force strongest for which inert gas?

A

Xe

66
Q

Solubility of Silver bromide in hypo sol is due to

A

[Ag(S2O3)2]3-

67
Q

Actinides showing +7 are

A

Np, Pu

68
Q

Polythene is a

A

thermoplastic

69
Q

Which is a bacteriostatic?

A

Erythromycin

70
Q

Detergent used in hair conditioners

A

cetyl trimethyl ammonium bromide

71
Q

Antiseptic dettol which is mix of terpineol is

A

chloroxylenol

72
Q

Which expt is responsible to find out charge of e’?

A

Millikan’s oil drop

73
Q

Monovalency of grp 13 can be explained by

A

I.P.E

74
Q

O, S, F, Cl e’ gain enthalpy order

A

O<S<F<Cl

75
Q

At no 114 belong to

A

C family

76
Q

Paper chromatography principle

A

Partition

77
Q

Conjugate base for H2O & HF are

A

OH and F-

78
Q

Can octet rule explain shape & relative stability

A

No

79
Q

N is less active due to

A

High dissociation energy

80
Q

P4 converted to P2 due to

A

p pi- p pi bond is weak

81
Q

Hardest lanthanide

A

Sm

82
Q

Oxidising power of Cr2O7, MnO4, VO2

A

(MnO4)->(Cr2O7)2->VO2+

83
Q

Increase in molar conductance of strong electrolyte is due to

A

increase in ionic mobility of ions

84
Q

Dimentional formual of latent heat

A

L^2/T^2

85
Q

Instantaneous power delivered to damped harmonic oscillator by ext periodic force under steady state conditions is

A

+ve

86
Q

Speed of transverse wave

A

v = √stress/density

87
Q

Amplitude of damping oscillator _______ with time

A

decreases

88
Q

Speed of a body thrown upward depends on

A

direction of propagation

89
Q

Acc to Archimedes princ, weight of body =

A

weight of fluid displaced

90
Q

Which doesn’t change wiht time for a body falling?

A

Horizontal cmpnt of vel

91
Q

Shear moduli denoted by

A

η = sigma/shear stain sigma for shear stress

92
Q

For ideal gas, the specific heat at constant pressure Cp
is greater than Cv because

A

There is a finite work done by the gas on the environment when its temperature is increased while the
pressure remains constant

93
Q

coefficient of viscosity is denoted by

A

η

94
Q

Ratio of specific heat means

A

Cp/Cv = gamma

95
Q

KE of rotation

A

1/2mv^2 K^2/R^2

96
Q

First eq of rotational motion

A

ω = ω(o) + αt

97
Q

The total energy of an artificial satellite of mass m revolving in a circular orbit around the earth with a speed
v is

A

-KE

98
Q

Change in vol expansion is

A

V[γ(l) - γ(s)]ΔT

99
Q

When YDSE is held in liq of RI μ, β =

A

β/μ

100
Q

From A,B if B is completely polarised, its angle is called

A

Brewster angle

101
Q

device used to convert energy from one form to another form

A

transducer

102
Q

The density of the nucleus is independent of

A

mass number

103
Q

The de-Broglie wavelength of the electron in the nth orbit of hydrogen atom is

A

inversely proportional to n

104
Q

If copper and silicon pieces are heated, the resistance of

A

copper will increase and silicon will decrease

105
Q

in AM transmission, the bandwidth of
the filter and amplifer is

A

2ω

106
Q

Magnetic susceptibility χ(m) =

A

I/H

107
Q

magnification for compound microscope

A

LD/f(o)f(e)

108
Q

Then the number of relations from A to B is

A

2^n(A×B)

109
Q

If the domain of a function is either R or a subset of R, then it is called a K. Here K refers to

A

Real fn

110
Q

Principle of mathematical induction is used

A

to prove that statements which are formulated interms of n, n is positive integer

111
Q

number of permutations of n different things taken r at a time, when the repetition is allowed is

A

n^r

112
Q

(a+b)^n =

A

nCr a^(n-r) b^r

113
Q

A binary operation * on the set X is called commutative, if for every a,b

A

a * b = b *a

114
Q

random error can be decreased by

A

increasing the number of readings and averaging them

115
Q

skew symmetric matrix then the diagonal elements of A are

A

0

116
Q
A
117
Q

In an n-type semiconductor, the fermi energy level lies

A

in the forbidden energy gap nearer to the conduction band

118
Q

For a Zener diode, what is doped?

A

both n and p

119
Q

Zeroth law of thermodynamics leads to the concept of

A

temp

120
Q

Carnot cycle of a reversible heat engine consists of

A

two isothermal and two adiabatic processes

121
Q

During B emission

A

neutron in the nucleus decays emitting an electron

122
Q

a moderator in nuclear reactors?

A

Heavy water

123
Q

The group-2 element that form predominantly covalent oxide and covalent halides is

A

Be

124
Q

Li shows diagonal relationship with

A

Mg

125
Q

When steam is passed through red hot coke, the pair of substances formed are

A

CO and H2

126
Q

NH2 shows which effect?

A

+M

127
Q

In the extraction of iron from haematite, limestone is added as

A

flux

128
Q

Which among the following is used a food preservative?
A) Sodium benzoate B) formic acid C) trichloro methane 4) iodoform

A

Sodium benzoate

129
Q

Europium belongs to

A

f block

130
Q

Dacron is an example of

A

polyester

131
Q

Chloramphenicol is an

A

antibiotic

132
Q

enhances lathering property of a soap?

A

Sodium rosinate

133
Q

De Broglie wavelength of an electron travelling at the speed of light would be:

A

2.43 pm

134
Q

H, S, Cl, O, F order of electronegativity is:

A

H<S<Cl<O<F

135
Q

The oxidation state of Cr in CrO5
is:

A

6

136
Q

hybridization of C in diamond is

A

sp3

137
Q

The C2-C3 bond length in propene is less than o
1.54 A due to

A

Hyperconjugation

138
Q

In the estimation of nitrogen by Duma’s method the nitrometer contains

A

aq. KOH

139
Q

Which of the following has no f electron in the zero oxidation state get it is an f–block element?

A

Th

140
Q

Total no. of tripeptides than can be prepared using 3 different aminoacids

A

6

141
Q

5p, 4f, 6s, 5d order of increasing energy of atomic orbitals is

A

5p < 6 s < 4f < 5d

142
Q

Which is true both for B and Al?

A

They burn in oxygen to give oxides at high temperature
Their halides are lewis acids
They combine with nitrogen to form nitrides

143
Q

(CH3)3CH –> KMnO4

A

(CH3)3COH

144
Q

Henry’s constant and solubility relation

A

inverse

145
Q

NH3, PH3, AsH3, SbH3, BiH3 sequence of increasing boiling point

A

PH3<AsH3<NH3<SbH3<BiH3

146
Q

Direction for cross product using

A

Right hand thumb rule

147
Q

Angle of refraction and brewster’s/polarizing angle relation

A

r = 90 - i(polar)

148
Q

Deviation angle and i(polar) relation

A

d = i(p) - r

149
Q

Angular momentum eqn

A

I omega

150
Q

(Omega)³ =

A

1

151
Q

(Omega)⁴ =

A

Omega

152
Q

(Omega)⁸

A

(Omega)²

153
Q

Sum of n odd nos

A

n²

154
Q

Sum of n natural nos

A

n(n+1)/2

155
Q

if nCa = nCb then

A

a=b or a+b=n

156
Q

sinø.sin(60-ø).sin(60+ø) =

A

¼sin3ø

157
Q

If 2 circles cut orthogonally

A

2g1g2 + 2f1f2 = C1+C2

158
Q

To find center of ellipse, circle and hyperparabola

A

Partially differentiate

KEAM (16 decks)

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