VITEEE PCBE Mock Test - 3

The reaction of pure water is

The term chromosome was coined by

Which type of blood vessel has thick walls in order to withstand high pressure?

Major function of mitochondria in a cell is

Centrioles and centrosomes occur in the cells of

The free floating organisms, of an open sea and shore, are collectively called

Wings of Bat, Locust and Pigeon are

Which one is not vestigial in humans

Fossilisation is

Enzyme required for transcription is

Central dogma of modern genetics is

During DNA replication, the strands separate by

Out of two alleles of the same gene, one finds morphological expression. The phenomenon is

How many types of genotypes are formed in F₂-progeny obtained from self-pollination of a dihybrid F₁ ?

A pregnant woman underwent amniocentesis. An extra barr body is present in the embryo. Syndrome likely to occur in child is

In sex-linked traits the males are

A disease transferred from mother to child through placenta is

Which is wrong?

Edward Jenner discovered

Goldfussia in which two differnt size of filamentous hair like structures protruding from its tip are

Floral diagram fails to indicate

Ovary is called inferior in

Hypothesis for oxygen coming from water was put forward by

Which of the following can yield a completely haploid plant

Epidermal outgrowths are known as

In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?

Which of the following organisms is used as an indicator of water quality?

Result of ozone hole is

Melanin protects us from

Relapse of malaria is caused by :

The site of testosterone production in the cytoplasm of an interstitial cell is the

What is the energy required in calories for formation of energy rich bond between phosphorus and ADP molecule in DNA?

The major objection against the theory of Natural Selection is that it

Neo-Darwinism believes that new species develop through

Lederberg replica experiment explains

The site of tubular excretion is the

The process that moves glucose from the proximal convoluted tubule into the peritubular capillaries is

Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength λ . If R is the Rydberg constant, the principal quantum number n of excited state is

An alternating current of rms value 10 A is passed through a 12 Ω resistor. The maximum potential difference across the resistor is

Energy, when one milligram mass is converted in to energy (in joules ) is

Two condensers, one of capacity C and the other of capacity C/2 , are connected to a V volt battery, as shown.

The work done in charging fully both the condensers is

x g of Ag is deposited by passing 4 A of current for 1 hour. How many gram of Ag will be deposited by passing 6 A for 40 min?

A laser beam is used for carrying out surgery because it

In a balanced Wheatstone's network, the resistances in the arms Q and S are interchanged. As a result

At what temperature, the resistance of a copper wire will become three times its value at 0^oC (Temperature coefficient of resistance for copper = 4 x 10^-3 per ^oC)

Two wires of same material have length L and 2L and cross-sectional areas 4A and A respectively. The ratio of their specific resistance would be

The length of given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be

When a proton is accelerated with 1 volt potential difference, then its kinetic energy is

What is increased in a step-down transformer

In an L-R circuit, the value of L is (0.4/π) henry and the value of R is 30 ohm. If in the circuit, an alternating emf of 200 volt at 50 cycles per second is connected, the impedance of the circuit and current will be

A coil of insulated wire is connected in series with a bulb, a battery and a switch. When the circuit is completed, the bulb lights up immediately. The circuit is switched off and a rod of soft iron is placed inside the coil. On completing the circuit again, it is observed that

The velocity of electromagnetic wave is parallel to

A charge Q is placed at the corner of a cube. The electric flux through all the six faces of the cube is

Two equal print charges are fixed at x = -a and x = +a on the X axis. Another point charge Q is placed at the origin. The change in electrical potential energy of Q, when it is displaced by a small distance x along the X-axis is approximately proportional to

If a point charge q be rotated in a circle of radius r around a charge Q, the work done will be

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

The inward and outward electric flux of a closed surface are 8 x10³ C and 4 x10³C respectively. The net charge inside the closed surface is

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

The electric field inside a sphere which carries a charge density proportional to the distance from the origin ρ = α r (α is a constant is)

Cadmium rods are used in a nuclear reactor

α - particle is equivalent to

The mass number of nucleus is

The slope of frequency of incident light and stopping potential for a given surface will be

Graph of maximum kinetic energy of the photoelectrons against ν, the frequency of the incident radiation on the metal, is a straight line of slope equal to

Radius of curvature of convex mirror is 40 cm and the size of object is twice as that of image.Then the image distance is

For a transistor, if current gain in the common-base is 0.96, then current gain in common-emitter is

Light propagates rectilinearly because of its

When a p - n junction diode is reverse biased, the thickness of the depletion layer

The impurity to be added to get n - type semiconductor is

The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the

What is the voltage gain in a common emitter amplifier, where input resistance is 3 Ω and load resistance 24 Ω, β = 0.6 ?

In p-type semiconductors conduction is due to

Indium impurity in germanium takes

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

In Young's double slit interference experiment the wavelength of light used is 6000 Å . If the path difference between waves reaching a point P on the screen is 1.5 microns, then at that point P

If ratio of amplitude of two waves is 4:3, then ratio of maximum and minimum intensity is

In Young's experiment of double slit, the intensity of central bright band is ---- times the individual intensities of the interfering waves

Proof spirit (by volume) is a mixture of

The reaction of Grignard reagent with formaldehyde followed by acidification gives

Which of the following does not give red ppt. with Fehling solution?

Which of the following reagents cannot be used to distinguish between hexanal and 2-hexanone?

100 mL of PH₃ on decomposition produced phosphorus and hydrogen. The change in volume is

The number of equivalents of Na₂S₂O₃ required for the volumetric estimation of one equivalent of Cu²⁺ is

Pentene-1 with HCl gives

Which of the following method is most appropriate for the manufacture of methane?

The colour of the precipitate formed when a reducing sugar is heated with Fehling solution is

DNA has deoxyribose, a base and the third component is

Essential human diet is

Acetamide and NaOBr/OH⁻ produce

In the above sequence of reactions, A and B are

Sulphonation of benzoic acid produces mainly

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

A vessel at equilibrium, contains SO₃, SO₂ and O₂. Now some helium gas is added, so that total pressure increases while temperature and volume remain constant. According to Le-Chatelier's principle, the dissociation of SO₃

The heat of neutralisation is maximum when

The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid is

The Δ H value for the reaction H₂ + Cl₂  → 2 HCl is − 44.12 K.cal. If E₁ is the activation energy of the reactants and E₂ is the activation energy of the products, then for the above reaction

Plants and living beings are the examples of

IUPAC name of CH₃CH = CH-C ≡ CH is

The co-ordination number of a central metal atom in the complex is determine by

Which one of the following will not show geometrical isomerism?

Which of the following reagent can be used to convert benzene diazonium chloride into benzene ?

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

The equivalent conductance of NaCl, HCl and C₂H₅COONa at infinite dilution are 126.45, 426.16 and 91 ohm^-1 cm² respectively. The eq. conductance of C₂H₅COOH is

Acetic anhydride reacts with diethyl ether in the presence of anhydrous AlCl₃ to give

The molar conductances of NaCl, HCl and CH₃COOHa at infinite dilution are 126.45, 426.16 and 91 Ω^-1-cm²-mol^-1 respectively. The molar conductance of CH₃COOH at infinite dilution i s

Iron rusts in the presence of

When oxalic acid is dehydrated by conc. H₂SO₄, then it forms

What is hybridization of P in Pcl₅ ?

Iron ore is concentrated by

Vapour pressure of a substance on increasing temperature

The acid which forms two series of salts is

Chlorine is in +1 oxidation state in

Which of the following describes the hexagonal close packed arrangement of spheres?

Which one of the following substances is not used for preparing lyophillic sols?

CuCl₂ and CuBr₂ exist as

The basic character of the transition metal monoxides follows the order

Find the Antonym of LEND

Find the Syonym of ABORIGINAL

Fill in the blank with appropriate word.
He lost the match easily because he had played a.........five set match in the earlier round.

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

To end in smoke

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

No one could explain how a calm and balanced person like him could PENETRATE such a mindless act on his friends.