VITEEE PCBE Mock Test - 7


125 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE PCBE Mock Test - 7


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This mock test of VITEEE PCBE Mock Test - 7 for JEE helps you for every JEE entrance exam. This contains 125 Multiple Choice Questions for JEE VITEEE PCBE Mock Test - 7 (mcq) to study with solutions a complete question bank. The solved questions answers in this VITEEE PCBE Mock Test - 7 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this VITEEE PCBE Mock Test - 7 exercise for a better result in the exam. You can find other VITEEE PCBE Mock Test - 7 extra questions, long questions & short questions for JEE on EduRev as well by searching above.
QUESTION: 1

Cork is an excellent material for making bottle stopper because it is

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QUESTION: 2

Reduced functionless mandibles occur in

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QUESTION: 3

Which is not a macromolecule?

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QUESTION: 4
Typical 'lubb-dupp' sounds heard in heart beat are due to
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QUESTION: 5
Chloroplasts are self replicating units as they possess
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QUESTION: 6
An example of monocot fibre yielding plant
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QUESTION: 7
In tissue culture embryoids are formed from pollen grains due to
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QUESTION: 8
Diaminopimelic acid and muramic acid occur in the wall of
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QUESTION: 9
In comparative study of grassland ecosystem and pond ecosystem
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QUESTION: 10
Monkeys and some lower groups have certain blood groups which are
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QUESTION: 11
Which of the following is a vestigial structure in python?
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QUESTION: 12
Living organisms with oldest history is
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QUESTION: 13
In a mutational event, when adenine is replaced by guanine, it is a case of
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QUESTION: 14
Double helix DNA structure was proposed by
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QUESTION: 15
Site of tRNA that binds to mRNA molecule is
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QUESTION: 16
Heterozygous tall (Tt) is crossed with homozygous tall (TT). Percentage of heterozygous tall in the progeny would be
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QUESTION: 17
Duchenne's muscular dystrophy is a
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QUESTION: 18
Mendel's laws of independent assortment is
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QUESTION: 19
Which immunoglobin is the largest in size
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QUESTION: 20
A late acting dominant disorder is
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QUESTION: 21
AIDS is
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QUESTION: 22
Antibody formation and immunity production by globulin protein is found in
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QUESTION: 23
Tunica Corpus theory is related with
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QUESTION: 24
Tap root are commonly found in
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QUESTION: 25
Roots that develop from part of plant other than radicle is found in
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QUESTION: 26
Liberation of oxygen when green cells in water are exposed to sunlight in presence of suitable acceptor is
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QUESTION: 27
Which one of the following substances plays an important role in biochemical defence of host plants?
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QUESTION: 28
Which one does not occur in xylem
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QUESTION: 29
Conversion of nitrites into nitrates is carried out by
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QUESTION: 30
In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/are
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QUESTION: 31
Lead concentration of blood is considered alarming at
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QUESTION: 32
In which of the following binary fission is not seen ?
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QUESTION: 33
A woman who exhibits male secondary sexual characteristics may have a tumor in her
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QUESTION: 34
Surface free floating organisms are
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QUESTION: 35
Reason for diversity in living beings is due to
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QUESTION: 36
The true statement about 'green-house effect' is that it is caused by
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QUESTION: 37
The theory that environment can bring about changes in individuals was proposed by
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QUESTION: 38
Closely related, morphologically similar, reproductively isolated sympatric populations are designated as
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QUESTION: 39
Which of the following causes the release of aldosterone?
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QUESTION: 40
Aldosterone is secreted by the
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QUESTION: 41

We can reduce eddy currents in the core of transformer

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QUESTION: 42

A proton and an α - particle enter into a region of uniform electric field. The ratio of the force on proton to that on α - particle is

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QUESTION: 43

The number of electrons emitted by a surface exposed to light is directly propotional to

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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

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QUESTION: 45

A steady current of 1.5A flows through a copper voltameter for 10 min. If the electrochemical equivalent of copper is 30 x 10-5g C-1 , the mass of copper deposited on the electrode will be

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QUESTION: 46

In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer having electron density 1011 per m-3?

Solution:

N max = 1011per m-3

QUESTION: 47

Identify that set in which all the three sustances are good conductors of electricity

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QUESTION: 48

The emf of a Daniel cell is 1.08V. When the terminals of the cells are connected to a resistance of 3 Ω , the potential difference across the terminals is found to be 0.6V. Then the internal resistance of the cell is

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QUESTION: 49

Three unequal resistors in parallel are equivalent to resistance 1 Ω . If two of them are in the ratio 1 : 2 and if no resistance value is fractional, the largest of the three resistances in ohms is

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QUESTION: 50

In a meter bridge, with an unknown resistance the standard resistance in the left gap is 6 Ω. If ratio of balancing lengths of meter bridge wire is 2:3, then the value of unknown resistance is

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QUESTION: 51

The charge on electron was discovered by

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QUESTION: 52

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

Solution:

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,

QUESTION: 53

In an A.C. circuit, the current is i = 5 sin (100t - π/2) amp and the a.c. potential is V = 200 sin (100t) volt. Then, the power consumption is

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QUESTION: 54

If 2.2 kW power is transmitted through a 10 Ω line at 22000 V, the power loss in the form of heat will be

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QUESTION: 55

Maxwell's equation describe the fundamental laws of

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QUESTION: 56

A point charge q is placed at a distance a/2 directly above the centre of a square of side a. The electric flux through the square assuming it to be one face of the cube is

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QUESTION: 57

Two charges -10 C and + 10 C are placed 10cm apart. Potential at the centre of the line joining two charges is

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QUESTION: 58

Equal charges are given to two spheres of different radii. The potential will be

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QUESTION: 59

An infinite long plate has surface charge density σ . As shown in the figure a point charge q is moved from A to B. Net work done by electric field is:

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QUESTION: 60

The energy stored in a capacitor is actually stored

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QUESTION: 61

If n capacitors each of capacitance C are connected in series with a battery of V volt, then electrostatic energy stored in all the capacitors will be

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The equivalent capacitance Cs of these series-connected capacitors is

Energy stored in all capacitors 

QUESTION: 62

A galvanometer of resistance 100 ohm gives full scale deflection with 0.01 A current. How much resistance in ohm should be connected in parallel to convert it into an ammeter of range 10 A.

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QUESTION: 63

Number of neutrons in C12 and C14 are

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QUESTION: 64

Energy obtained when 1 mg mass is completely converted to energy is (in joules)

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QUESTION: 65

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

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QUESTION: 66

The number of photo electrons emitted for light of a frequency v (higher than the threshold frequency v0) is proportional to:

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QUESTION: 67

Stopping potential for photoelectrons

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QUESTION: 68

A person cannot see clearly distances more than 40 cm. He advised to use lens of power

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QUESTION: 69

In spectral radiancy curve for cavity radiation, the wave-length of the maximum spectral rediancy

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QUESTION: 70

In a p-n junction

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QUESTION: 71

If α and β are the collector emitter short circuit current amplification factor and collector base short circuit current amplification factor respectively of a transistor, then α is equal to

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QUESTION: 72

Energy required to break one bond in DNA is approximately

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QUESTION: 73

A n-p-n transistor conducts when

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QUESTION: 74

With rise in temperature, the specific resistance of semiconductors

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QUESTION: 75

In case of a semiconductor which of the following statement is wrong

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QUESTION: 76

Which of the following when added as an impurity into the silicon produces n-type semiconductor

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QUESTION: 77

The sun is rotating about is own axis. The spectral lines emitted from the two ends of its equator, for an observer on the earth, will show

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QUESTION: 78

The light from a sodium vapour lamp passes through a single narrow slit and then through two close, parallel narrow slits. The single slit lies on the perpendicular bisector of the line joining the two close, parallel slits. An observer looking towards the lamp through the double slit will see

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QUESTION: 79

Both light and sound waves produce diffraction. It is more difficult to observe the diffraction with light waves because

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QUESTION: 80

If a star is moving towards the earth, then the spectrum lines are shifted towards

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QUESTION: 81

Which of the following will not give iodoform test?

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QUESTION: 82

Conversion of acetaldehyde into ethyl acetate in presence of aluminium ethoxide is called

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QUESTION: 83

Reduction of a carbonyl group to a methylene group by alkaline decomposition of the hydrazone is known as

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QUESTION: 84

The reagent with which both acetaldehyde and acetone react easily is

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QUESTION: 85

One mole of CO₂ contains

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QUESTION: 86

The addition of HBr to 2-pentene gives

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QUESTION: 87

The number of moles of sodium oxide in 620 g of it is

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QUESTION: 88

An alkane C7H16 is produced by the reaction of Lithium di (3-pentyl) cuperate with ethyl bromide. The structural formula of product is

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QUESTION: 89

Which of the following contains nitrogen?

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QUESTION: 90

Which functional group participates in the formation of disulphide bond in proteins?

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QUESTION: 91

Which of the following is a disaccharide?

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QUESTION: 92

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane .The ester is

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QUESTION: 93

The reaction of chloroform with alcoholic KOH and p-toludine forms

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QUESTION: 94

Hydrolytic reaction of fats by caustic soda is known as

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QUESTION: 95

The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is

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QUESTION: 96

Identify the reaction for which Δ H ≠ Δ E

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QUESTION: 97

The role of a catalyst in a reversible reaction is to

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QUESTION: 98

The heat of combustion of yellow and red phosphorus are -9.91 kJ mol-1 and -8.78 kJ mol-1 respectively. The heat of conversion of yellow P → red P is

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QUESTION: 99

Indigo belongs to

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QUESTION: 100

An ideal gas heat engine operates in Carnot cycle between 227oC and 127oC. It absorbs 6 x 104 cals of heat at higher temp. Amount of heat converted into work is

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QUESTION: 101

Which of the following is expected to exhibit optical isomerism?(en=ethylenediamine)

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QUESTION: 102

Hinsberg reagent is

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QUESTION: 103

IUPAC name of CH₃CH = CH - C≡CH is

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QUESTION: 104

In the following reaction C₆H₆NH₂ + CHCl₃ + 3NaOH → A + 3B + 3C the product A is

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QUESTION: 105

When same quantity of electricity is passed through aqueous AgNO3 and H2SO4 solutions connected in series, 5.04 x 10-2 gram of H2 is liberated. What is the mass of silver (in grams) deposited?(Eq. wts. of Hydrogen = 1.008, silver = 108)

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QUESTION: 106

The number of isomers exhibited by [Cr(NH₃)₃Cl₃] is

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QUESTION: 107

The van der Waal's equation explains the behaviour of

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QUESTION: 108

What is the electrochemical equivalent (in g coulomb-1) of silver?
(Ag = 108; F = Faraday)

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QUESTION: 109

The ether that undergoes electrophilic substitution reaction is

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QUESTION: 110

The electrolysis of aqueous NaCl produces at cathode and anode respectively

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QUESTION: 111

Electrolytic reduction method is used in the extraction of

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QUESTION: 112

Silicon is an important constituent of

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QUESTION: 113

Among the following oxides, the least acidic is

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QUESTION: 114

The number of NaCl molecules in unit cell of its crystal is

Solution:

In Nacl, No of Na+ ions = 12 (at edge centres) x 1/4 + 1 (at body centre) x 1 = 3 + 1 = 4
No of Cl- ions = 8 (at corners) x 1/8 + 6 (at face centre) x 1/2 = 1 + 3 = 4
So 4 unis of NaCl

QUESTION: 115

Which of the following is not a redox reaction?

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QUESTION: 116

NH₃ has a much higher b.p. than PH₃ because

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QUESTION: 117

Which of the following will lose optical activity on treatment with diimide H N ═ N H ?

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QUESTION: 118

In chemical reaction, catalyst:

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QUESTION: 119

Which of the following is a transition element?

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QUESTION: 120

CuSO4 reacts with KCN solution and forms

Solution:

2CuSO4 + 10KCN → 2K3 [Cu (CN)4] + (CN)2 + 2K2SO4

QUESTION: 121

Find the Syonym of ABSTRUSE

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QUESTION: 122

Find the antonym of SALUBRIOUS

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QUESTION: 123

Fill in the blank with appropriate word.
The firm has enjoyed steady........in the last ten years.

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QUESTION: 124

Out of the given alternatives, choose the one which can be substituted for the given capitalised word.

He cannot MAKE BOTH ENDS MEET.

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QUESTION: 125

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

Every human adance carries with it not only automatic benefits but also a new responsibility, and we must remain constantly AWARE FOR the dangers that lie in the possible misuse of our enormous skills.

Solution:

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