VITEEE PCBE Mock Test - 4

Use the following characteristics to answer the question: one-way valves thin elastic layer near skeletal muscle These characteristics describe which type of vessel?

Cristae are associated with which of the following organelle?

Prokaryotic ribosomes are

Chloroplasts fix

Quinine is obtained from

In comparative study of grassland and pond ecosystems

Evolution of a species or group can be studied through

A connecting link between reptiles and bird is

Potato and Sweet Potato have edible parts which are

The most abundant RNA of cell is

RNA that picks up specfic amino acid from amino acid pool of cytoplasm to carry it to ribosome during protein synthesis is

Eschirichia coli with completely radioactive DNA was allowed to replicate is non-radioactive medium for two generations. Percentage of bacteria with radioactive DNA is

Had Mendal decided to study those traits together which are determined by linked genes, he would not have found out

Alleles of a gene are found on

In sickle cell anaemia, death occurs when lethal genes are present in

AIDS is caused by

If an albino marries a normal woman and 50% offspring are albino, the woman is

An autoimmune disease is

Study of interaction of antigen and antibody in blood is

Among the following which one is not a modificatin of stem

If a fruit is developed from (2G) ovary with parietal placentation ,unilocular when young becoming bilocular at maturity and the length of the fruit is less than its breath,the fruit would be called as

At maturity, which of the following is non-nucleated ?

Which of the following is least effective in photosynthesis

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

The application of engineering and technological principles to the life sciences is called

Sieve tubes possess

Respiratory disorders occur due to automobile exhaust because of

Ionising radiation includes

Treatment of polluted water is carried out with the help of

Protozoa reproduce by several methods. Which protozoan reproduces both by binary fission and conjugation?

The part of the sperm that contains hydrolytic enzymes is the

de Vries called variants as

The TMV capsid has capsomeres numbering

Presence of different types of beaks in finches of Galapagos islands adapted to different feeding habits provides evidence for

Frequency of a gene in a population will increase if the gene is

Pressure filtration occurs at the

Which substance is found in the glomerulus, Bowman’s capsule and efferent arteriole but is not normally found in the collecting duct?

If E₀ represents the peak value of the voltage in an A.C. circuit, the r.m.s. value of the voltage will be

The force experienced by the cathode rays when they pass through an electric field of intensity E → is

In compton scattering process, the incident X -rays radiations is scattered at an angle 60⁰. The wavelength of the scattered radiations is 0.22 Å . The wavelength of the incident X - radiation in Å units is 

Two spherical conductors each of capacity C are charged to potential V and -V. These are then connected by mean of a fine wire. The loss of energy is

The internal resistance of a primary cell is 4 Ω. It generates a current of 0.2 A in an external resistance of 21 Ω. The rate at which chemical energy is consumed in providing the current is

A galvanometer of resistance 36 Ω is changed into an ammeter by using a shunt of 4 Ω. The fraction f₀ of total current passing through the galvanometer is

Optical fibres uses the phenomenon of

If the length of a conductor is halved, then its conductance will be

A cell of internal resistance 1.5Ω and of e.m.f. 1.5 volt balances 500 cm on a potentiometer wire. If a wire of 1.5 Ω is connected between the balance point and the cell, then the balance point will shift

A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 20 Vm^-1 and 0.5 T at right angles to the direction of motion of the electrons. What is the velocity of the electrons

When the length and area of cross-section both are doubled, then its resistance

Choke coil works on the principle of

If a half wave rectifire is used to convert 50 Hz a.c. into d.c., then the number of pulses present in rectified voltage is

An electromagnet has stored 648 J of energy, when a current of 9 A exists in its coils. If the current is reduced to zero in 0.3 s, then average induced e.m.f. in the coils is

Which of the following is/are not electromagnetic waves?

A sphere S₁ of radius r₁ encloses a total charge Q. If there is another concentric sphere S₁ of radius r 2 > r 1 and there be no additional charges between S₁ and S₂, the ratio of electric flux through S₁ and S₂ is

Potential energy of two equal positive charges 1 μ C each held 1 m apart in air is

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

A capacitor of capacitance 1 μ F is charged to 1KV. The energy stored in the capacitor in joules is

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

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

An electric current passes through a long straight wire. At a distance 5cm from wire, the magnetic field is B. The field at 20cm from the wire would be

Which shows radioactivity?

In a nuclear reactor heavy water is used as a

In a chain reaction uranium atom gets fissioned forming two different materials. Then total weight of these put together is

When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be

By increasing the intensity of incident light on the surface of a metal

The dark lines in the solar spectrum are due to

An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of image will be

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

When the p-end of the p-n junction is connected to the negative terminal of the battery and the n-end to the positive terminal of the battery, then the p-n junction behaves like

Which of the following relation is true about a transistor?

In p-type semiconductor

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

P-N junction is said to be forward biased, when

In a P-type semiconductor, germanium is doped with

Huygen's wave theory of light can not explain

If the two slits in Young's experiment have width ratio 1:4, the ratio of intensity at maxima and minima in the interference pattern in

When a source is linear, the wavefront is

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

Glycerol can be obtained from

1-Phenylethanol can be prepared by reaction of benzaldehyde with

Which of the following does not turn Schiff's reagent to pink ?

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

How many monochlorobutanes will be obtained on chlorination of n-butane?

Propene when heated with chlorine at about 500⁰C forms

Leucine amino acids is

The number of atoms in 4.25 g of NH₃ is approximately

Which of the following statements about ribose is incorrect?

The empirical formula of an acid is CH₂O₂, the probable molecular formula of acid may be

Among the naturally occuring carbohydrates, furanose ring is found in

Which reagent will bring about the conversion of carboxylic acids into esters ?

A liquid is in equilibrium with its vapour at its boiling point. The molecules in these two phases will have equal

Consider the following reaction occuring in a automobile engine 2C₈H₈(g) + 25O₂(g) → 16CO₂(g) + 18H₂O(g). The signs of ∆H, ∆S and ∆G for above reaction would be

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?

An organic acid having molecular formula C₂H₄O₂ is

In a reversible reaction, the catalyst

Trannquilisers are substances used for the treatment of

In thermodynamics, a process is called reversible when

A ligand can also be regarded as

The IUPAC name of [Cr(NH₃)₆]³⁺ is

The IUPAC name of acraldehyde is

Which of the following is produced by reaction of RCN in sodium and alcohol ?

The time required to deposit one millimole of aluminum metal from Al₂O₃, by passing 9.65 amperes through aqueous solution of aluminum ion is

The resistance of 1 N solution of acetic acid is 250 ohm, when measured in a cell of cell cosntant 1.15 cm^⁻1. The equivalent conductance (in ohm^⁻1 cm² equiv^⁻1) of 1 N acetic acid is

Methylphenylether can be obtained by reacting

The indicator that is obtained by coupling the diazonium salt of sulphanilic acid with N,N-dimethylaniline is

Out of Cu, Ag, Fe and Zn, the metal which can displace all others from their salt solutions is

Which one of the following substances is used in the laboratory for drying of neutral gases?

Which of the following is not used as a pigment in paints?

Which of the following has highest dipole moment?

At STP, a container has 1 mole of Ar, 2 moles of CO₂,3 moles of O₂ and 4 moles of N₂. Without changing the total pressure if one mole of O₂ is removed, the partial pressure of O₂

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

Mixture used for the tips of match stick is

In a crystal, the atoms are located at the position of

Alkane, C₅H₁₂, in which all H-atoms are equivalent is:

An emulsifier is a substance which

AgO formed by oxidation of Ag₂O is

White copper sulphate decomposes to give

Find the antonym of CELIBATE

Fill in the blank with appropriate word.
The bureaucrat was.........for his role in the scam.

Find the Synonym of INFREQUENT

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

The staff have felt ON EDGE since they heard the rumour about retrenchment.

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

Poor Tom LAID in the shade of a tree before he could walk further.