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VITEEE PCBE Mock Test - 9


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125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 9

VITEEE PCBE Mock Test - 9 for JEE 2023 is part of VITEEE: Subject Wise and Full Length MOCK Tests preparation. The VITEEE PCBE Mock Test - 9 questions and answers have been prepared according to the JEE exam syllabus.The VITEEE PCBE Mock Test - 9 MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for VITEEE PCBE Mock Test - 9 below.
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VITEEE PCBE Mock Test - 9 - Question 1

Ten pairs of spiracles with trachea are present in

VITEEE PCBE Mock Test - 9 - Question 2

A hundred year old tree of temperate area will show

VITEEE PCBE Mock Test - 9 - Question 3

Genophore/bacterial genome or nucleoid is made of

VITEEE PCBE Mock Test - 9 - Question 4
Robert Brown discovered
VITEEE PCBE Mock Test - 9 - Question 5
The division of the plant kingdom into prokaryota and eukaryota is based on the characters of
VITEEE PCBE Mock Test - 9 - Question 6
The highest blood pressure in the aorta occurs when the
VITEEE PCBE Mock Test - 9 - Question 7
Calcium gives rigidity to bones and teeth alongwith
VITEEE PCBE Mock Test - 9 - Question 8
International Rice Research Institute (IRRI) is located at
VITEEE PCBE Mock Test - 9 - Question 9
Vestigial organ of python is
VITEEE PCBE Mock Test - 9 - Question 10
The ecosystem of a pond is referred as
VITEEE PCBE Mock Test - 9 - Question 11
Which of the following can you call atavism?
VITEEE PCBE Mock Test - 9 - Question 12
The modern horse is known as
VITEEE PCBE Mock Test - 9 - Question 13
Reverse transcription was discovered by
VITEEE PCBE Mock Test - 9 - Question 14
tRNA has the function of
VITEEE PCBE Mock Test - 9 - Question 15
The Ti plasmid is often used for making transgenic plants. This plasmid is found in
VITEEE PCBE Mock Test - 9 - Question 16
Which contributed to the success of Mendel?
VITEEE PCBE Mock Test - 9 - Question 17
A pregnant woman underwent amniocentesis. An extra barr body is present in the embryo. Syndrome likely to occur in child is
VITEEE PCBE Mock Test - 9 - Question 18
When one gene hides the effect of another gene, the interaction factor is known as :
VITEEE PCBE Mock Test - 9 - Question 19
Huntington's chorea is characterised by
VITEEE PCBE Mock Test - 9 - Question 20
Binding of antigen to antibody is through
VITEEE PCBE Mock Test - 9 - Question 21
Blood group AB has
VITEEE PCBE Mock Test - 9 - Question 22
O blood group is universal donor because the blood has
VITEEE PCBE Mock Test - 9 - Question 23
A fibrous root system is adapted better than tap root system to perform the function of
VITEEE PCBE Mock Test - 9 - Question 24
Which of the following pair does not match?
VITEEE PCBE Mock Test - 9 - Question 25
The loss of which will harm the tree most?
Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 25 Bark contains the phloem that carries nutrition for the plant from the leaves
VITEEE PCBE Mock Test - 9 - Question 26
Exarch and polyarch vascular bundles occur in
VITEEE PCBE Mock Test - 9 - Question 27
In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?
VITEEE PCBE Mock Test - 9 - Question 28
Hybridomas are result of
VITEEE PCBE Mock Test - 9 - Question 29
Noise becomes uncomfortable above
VITEEE PCBE Mock Test - 9 - Question 30
Which constitutes the thickening in collenchyma
VITEEE PCBE Mock Test - 9 - Question 31
BOD is measure of
VITEEE PCBE Mock Test - 9 - Question 32
Use of pesticides is problematic as
VITEEE PCBE Mock Test - 9 - Question 33
Protozoa reproduce by several methods. Which protozoan reproduces both by binary fission and conjugation?
VITEEE PCBE Mock Test - 9 - Question 34
The presence of human chorionic gonadotropin (HCG) in a woman’s urine indicates that she
VITEEE PCBE Mock Test - 9 - Question 35
Father of biology is
VITEEE PCBE Mock Test - 9 - Question 36
'Ontogeny recapitulates phylogeny'. This is
VITEEE PCBE Mock Test - 9 - Question 37
The importance of random accumulation of small genetic changes sufficient to explain evolution was given by
VITEEE PCBE Mock Test - 9 - Question 38
Phenomenon of industrial melanism proves
VITEEE PCBE Mock Test - 9 - Question 39
Which substance would normally be found in higher concentration in urine than in blood?
VITEEE PCBE Mock Test - 9 - Question 40
Which of the following would cause the kidney to produce more concentrated urine?
VITEEE PCBE Mock Test - 9 - Question 41

An oscillator circuit consists of an inductance of 0.5 mH and a capacitor of 20μF. The resonant frequency of the circuit is nearly

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 41

VITEEE PCBE Mock Test - 9 - Question 42

The penetrating power of X - rays increases with the

VITEEE PCBE Mock Test - 9 - Question 43

An electron and a proton have the same wave length. Which one of the following statements is correct about them?

VITEEE PCBE Mock Test - 9 - Question 44

A 10 μ F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference 20 volt. The capacitance of second capacitor is

VITEEE PCBE Mock Test - 9 - Question 45

The resistance of a cell does not depend upon

VITEEE PCBE Mock Test - 9 - Question 46

If sky wave with a frequency of 50 MHz is incident on D-region at an angle of 30o, then angle of refraction is

VITEEE PCBE Mock Test - 9 - Question 47

For a metallic wire, the ratio V/i (V= the applied potential difference, i= current flowing) is

VITEEE PCBE Mock Test - 9 - Question 48

The resistance of a wire is 10Ω. Its length is increased by 10% by stretching. The new resistance will now be

VITEEE PCBE Mock Test - 9 - Question 49

A moving coil galvanometer is converted into an ammeter reading upto 0.03 A by connecting a shunt of resistance 4r across it and into an ammeter reading upto 0.06 A when a shunt of resistance r is connected across it. What is the maximum current which can be sent through this galvanometer if no shunt is used

VITEEE PCBE Mock Test - 9 - Question 50

An electrical meter of internal resistance 20 Ω gives a full scale deflection when one milliampere current flows through it. The maximum current, that can be measured by using three resistors of resistance 12 Ω each, in milliamperes is

VITEEE PCBE Mock Test - 9 - Question 51

If an electron of mass m and charge e is accelerated from rest through a potential difference V in vacuum, then its final velocity will be

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 51

VITEEE PCBE Mock Test - 9 - Question 52

If the rotational velocity of a dynamo armature is doubled, then induced emf will

VITEEE PCBE Mock Test - 9 - Question 53

The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux φ linked with the primary coil is given by φ = φ 0 + 4t, where φ is in weber, t is time in second and φ 0 is a constant, the output voltage across the secondary coil is

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 53

No. of turns across primary Np = 50
Number of turns across secondary Ns = 1500
Magnetic flux linked with primary, Φ = Φ0 + 4t
∴ Voltage across the primary,

VITEEE PCBE Mock Test - 9 - Question 54

Two coils have self inductance L1 = 4 m H and L2  = 1 m H respectively. The currents in the two coils are increased at the same rate. At a certain instant of time both coils are given the same power. If i1 and i2  are the currents in the two coils, as that instant of time respectively, then the value of i1/ i2  is

VITEEE PCBE Mock Test - 9 - Question 55

Which of the following is/are not electromagnetic waves?

VITEEE PCBE Mock Test - 9 - Question 56

Two equal charges, q each are placed at a distance of 2a, and a third charge -2q is placed at the mid point. The potential energy of the system is

VITEEE PCBE Mock Test - 9 - Question 57

A charge q is placed at the corner of a cube of side l. The electric flux passing through the cube is

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 57

Eight cubes, each side l, are required to form a Gaussian surface
So that the charge q at the corner of a small cube appears at the centre of the bigger cube
According to Gauss's law, the electric flux through the bigger cubes = q/∈0 
Hence the electric flux through the given small cube = q/8∈0 

VITEEE PCBE Mock Test - 9 - Question 58

Two equal charges q of opposite sign separated by a distance 2a constitute an electric dipole of dipole moment p. If P is a point at a distance r from the centre of the dipole and the line joining centre to this point makes an angle θ with the axis of the dipole, then potential at the point P is given by

VITEEE PCBE Mock Test - 9 - Question 59

The plates of a parallel plate capacitor are charged upto 200 volts. A dielectric slab of thickness 4 mm is inserted between its plates. Then to maintain the same potential difference between the plates capacitor, the distance between the plates is increased by 3.2 mm. The dielectric constant of dielectric slab is

VITEEE PCBE Mock Test - 9 - Question 60

Eight dipoles of charges of magnitude q are placed inside a cube. The total electric flux coming out of the cube will be

VITEEE PCBE Mock Test - 9 - Question 61

Five equal capacitors connected in series have a resultant capacitance of 4 μ F. The total energy stored in these, when these are connected in parallel and charged to 400V is

VITEEE PCBE Mock Test - 9 - Question 62

A long solenoid carrying a current produces a magnetic field B along its axis. if the current is doubled and the number of turns per cm is halved, the new value of magnetic field is

VITEEE PCBE Mock Test - 9 - Question 63

Neutron was discovered by

VITEEE PCBE Mock Test - 9 - Question 64

When the nucleus of a radioactive element emits an alpha particle, the atomic number is decreases by

VITEEE PCBE Mock Test - 9 - Question 65

The material used to slow down neutrons in a reactor is called

VITEEE PCBE Mock Test - 9 - Question 66

A photo cell is receiving light from a source placed at a distance of 1 m. If the same source is to be placed at a distance of 2m, then the ejected electron

VITEEE PCBE Mock Test - 9 - Question 67

The work function of a metal is 2.8 eV. Its threshold wavelength will be

VITEEE PCBE Mock Test - 9 - Question 68

A ray of light is incident on a plane mirror at an angle of 60o . The angle of deviation produced by the mirror is

VITEEE PCBE Mock Test - 9 - Question 69

A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 69

m = -3, m = - v u
-3 = - v -20
⇒ v = - 60 cm
Now, u = - 20, v = - 60, f = ?

VITEEE PCBE Mock Test - 9 - Question 70

A semiconductor device which is used for detecting light intensity is called a

VITEEE PCBE Mock Test - 9 - Question 71

A p-n photodiode is fabricated from a semiconductor with band gap of 2.8 eV. Which of the following wavelengths it can detect?

VITEEE PCBE Mock Test - 9 - Question 72

Which is true about the following? I An amplifier is necessarily an oscillator too II An oscillator is necessarily an amplifier too

VITEEE PCBE Mock Test - 9 - Question 73

A semiconductor device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be

VITEEE PCBE Mock Test - 9 - Question 74

The reverse biasing in a p-n junction diode

VITEEE PCBE Mock Test - 9 - Question 75

The dominant mechanism for motion of charge carriers in forward and reverse biased silicon p-n junction are

VITEEE PCBE Mock Test - 9 - Question 76

In a P-type semiconductor

VITEEE PCBE Mock Test - 9 - Question 77

In young's double slit experiment, the intensity of central maximum is I. It one slit is closed, the intensity at the same place will become

VITEEE PCBE Mock Test - 9 - Question 78

When distance between source of light and observer decreases, then the apparent frequency of light

VITEEE PCBE Mock Test - 9 - Question 79

Two identical light waves, propagating in the same direction, have a phase difference δ . After they superpose the intensity of the resulting wave will be proportional to

VITEEE PCBE Mock Test - 9 - Question 80

In Young's double slit experiment, the width of the fringes obtained with light of wavelength 6000 Angstrom is 2.0mm. The fringe width, if the entire apparatus is immersed in a liquid of refractive index 1.33, will be

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 80

Fringe width in Young's double slit experiment β = Dλ/d
When apparatus is immersed in liquid, only wavelength of light (λ) changes
Wavelength of light is liquid,
λ' = λ/n , where n = refractive index of medium
Initial fringe width, β = Dλ/d .....(i)
Fringe width in liquid, β' = Dλ' /d .....(ii)
Dividing Equation (ii) by Equation (i), we get

VITEEE PCBE Mock Test - 9 - Question 81

C₆H₅CHO + HCN → C₆H₅CH(CN)OH. The product would be

VITEEE PCBE Mock Test - 9 - Question 82

The boiling point of glycerol is more than propanol because of

VITEEE PCBE Mock Test - 9 - Question 83

Which does not react with Fehling solution ?

Detailed Solution for VITEEE PCBE Mock Test - 9 - Question 83

Propanone is methyl ketone
So ketones do not react with fehling's solution

VITEEE PCBE Mock Test - 9 - Question 84

Which of the following reagent react differently with HCHO and CH₃CHO and CH₃COCH₃

VITEEE PCBE Mock Test - 9 - Question 85

The reaction/method that does not give an alkane is

VITEEE PCBE Mock Test - 9 - Question 86

1, 3-Butadiene when treated with Br₂ gives

VITEEE PCBE Mock Test - 9 - Question 87

The units nanometer, fermi, angstrom and attometre arranged in decreasing order

VITEEE PCBE Mock Test - 9 - Question 88

The least count of an instrument is 0.01cm. Taking all precautions, the most possible error in the measurement can be

VITEEE PCBE Mock Test - 9 - Question 89

Carboxylic acids are more acidic than phenol and alcohol because of

VITEEE PCBE Mock Test - 9 - Question 90

Which of the following is a disaccharide?

VITEEE PCBE Mock Test - 9 - Question 91

The metal present in vitamin B₁₂ is

VITEEE PCBE Mock Test - 9 - Question 92

Calorific value is in order

VITEEE PCBE Mock Test - 9 - Question 93

The acid amide is converted into acid with evolution of nitrogen gas by

VITEEE PCBE Mock Test - 9 - Question 94

Which of the following salt can be produced by the reaction of CO and caustic soda ?

VITEEE PCBE Mock Test - 9 - Question 95

The rate, at which a substance reacts at constant temperature, depends upon its

VITEEE PCBE Mock Test - 9 - Question 96

In a closed insulated container, a liquid is stirred with a paddle to increase its temperature. In this process, which of the following is true?

VITEEE PCBE Mock Test - 9 - Question 97

When H₂ and I₂ are mixed and equilibrium is attained, then

VITEEE PCBE Mock Test - 9 - Question 98

If a gas at constant temperature and pressure expands, then its

VITEEE PCBE Mock Test - 9 - Question 99

Which of the following is not correct?

VITEEE PCBE Mock Test - 9 - Question 100

A drug that is antipyretic as well as analgesic is

VITEEE PCBE Mock Test - 9 - Question 101

The number of possible isomers of an octahedral complex, [ Co(C2O4)2(NH3)2 ] − is :

VITEEE PCBE Mock Test - 9 - Question 102

The systematic name of (CH₃)₂CH-COOH is

VITEEE PCBE Mock Test - 9 - Question 103

The organometallic compound which is used as a catalyst in the hydrogenation of alkenes or alkynes is

VITEEE PCBE Mock Test - 9 - Question 104

Hydrolysis of benzonitrile gives

VITEEE PCBE Mock Test - 9 - Question 105

Hinsberg reagent is

VITEEE PCBE Mock Test - 9 - Question 106

The reagent used for the preparation of higher ethers from hologenated ethers is

VITEEE PCBE Mock Test - 9 - Question 107

During smelting an additional substance is added which combines with impurities to form a fusible product. It is known as

VITEEE PCBE Mock Test - 9 - Question 108

Oxidation no. of chlorine in hypochlorous acid is

VITEEE PCBE Mock Test - 9 - Question 109

Which of the following is not a reducing agent ?

VITEEE PCBE Mock Test - 9 - Question 110

Consider the following four electrodes
A = Cu+2 0.0001 M | Cu (s)    
B = Cu+2 0.1 M | Cu (s)    
C = Cu+2 0.01 M |Cu (s)    
D = Cu+2 0.001 M | Cu (s)    
If the standard reduction potential of Cu+2  ∕ Cu is + 0.34 V , the reduction potential (in volts) of the above electrodes follow the order

VITEEE PCBE Mock Test - 9 - Question 111

Sodium hexametaphosphate is known as

VITEEE PCBE Mock Test - 9 - Question 112

0.24 g of a volatile gas upon vapourisation gives 45 ml vapour of N.T.P. what will be vapour density of the substance ? (Density of H₂ = 0.089 gl-1)

VITEEE PCBE Mock Test - 9 - Question 113

C and Si have

VITEEE PCBE Mock Test - 9 - Question 114

Basicity of orthophosphoric acid is

VITEEE PCBE Mock Test - 9 - Question 115

To get n-type doped semiconductor, impurity to be added to silicon should have the following number of valence electrons

VITEEE PCBE Mock Test - 9 - Question 116

Which of the following has the same oxidation state as that of Cr in K₂CrO₃

VITEEE PCBE Mock Test - 9 - Question 117

Following eclipsed form of propane is repeated after rotation of:

VITEEE PCBE Mock Test - 9 - Question 118

Medicines are more effective, if they are used in

VITEEE PCBE Mock Test - 9 - Question 119

The white anhydrous copper sulphate decomposes to give

VITEEE PCBE Mock Test - 9 - Question 120

Which of the following is ionic in nature ?

VITEEE PCBE Mock Test - 9 - Question 121

Fill in the blank with appropriate word.
No matter what.......come our way, we should not lose our temper.

VITEEE PCBE Mock Test - 9 - Question 122

Find the Antonym of HINDRANCE

VITEEE PCBE Mock Test - 9 - Question 123

Find the synonym of AMITY

VITEEE PCBE Mock Test - 9 - Question 124

Choose the alternative which best expresses the meaning of the idiom/phrase.

Feathering one's nest

VITEEE PCBE Mock Test - 9 - Question 125

Improve the sentence by choosing best alternative for capitalised part of the sentence.

When the train finally CAME INTO the station the lonely traveller seemed relieved.

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