VITEEE PCBE Mock Test - 2

80 S ribosomes are made up of

Conversion of green tomatoes into red form involves

The decreasing order of mineral concentration in a cell is

Which of the following blood vessels has a thin elastic layer?

Middle lamella is

An ecosystem has two components such as

Analogous organs are

Angiosperms flourished during

Homologous organs are

Enzyme required for removing RNA primer during DNA replication is

Intron is part of DNA which

According to Chargaff rule

Epistasis in which dihybrid ratio of 9:3:3:1 between AaBb X AaBb is modified is

In Red-White flowered cross of Mirabilis jalapa, F generation has red, pink and white flowered plants in the ratio of

Recessive trait disorders are characterised by

In sex-linked traits the males are

T-lymphocytes recognise

HIV has a protein coat and a genetic material which is

Surgical removal of thymus of a new born shall result in failure to produce

Which of the following is incorrect matched pair?

Tunica Corpus theory was proposed by

Censer mechanism of fruit dispersal is found in

Which one dies first when a ring of bark is removed

Which one of the following substances plays an important role in biochemical defence of host plants?

For the manufacture of wines and beers the microorganism that is employed is

Bordered pits are more common in

Gas released during Bhopal tragedy was

The two great industrial tragedies namely, MIC and chernobyl, respectively occured where and when?

Increase in the concentration of pollutants in higher trophic levels is called

Kala-azar is a disease caused by :

Pseudopregnancy is due to

Mammalia is a

Select the correct statement

Protophytes were dominant during - period

Fossils of organisms found in South America resemble most of the fossils in

Which substance would normally be found in higher concentration in urine than in blood?

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

Voltage and current in an A.C. circuit are given by V = 5 sin(100πt - π/6) and I = 4sin(100πt + π/6)

Continuous emission spectrum is produced by

Δ λ is the difference between the wavelength of K_α line and the minimum wavelength of a continuous X - ray spectrum when the X - ray tube is operated at a voltage V. If the operating voltage is changed to V/3 , then the above difference is Δλ¹ . Then

A parallel plate capacitor is filled by copper plate of thickness b. The new capacity will be

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

Optical fibres uses the phenomenon of

A car battery has e.m.f. 12 volt and internal resistance 5 x 10^-2 ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Two cells with the same e.m.f 'E' and different internal resistances r₁ and r₂ are connected in series to an external resistance R. The value of R so that the potential difference across the first cell be zero is

Four resistances 10 Ω , 5 Ω , 7 Ω and 3 Ω are connected so that they form the sides of a rectangle AB, BC, CD and DA respectively. Another resistance of 10 Ω is connected across the diagonal AC. The equivalent resistance between a A and B is

The net resistance of a voltmeter should be large to ensure that

In Thomson's experiment of finding e/m for electrons, beam of electron is replaced by that of muons (particle with same charge as that of electrons but of mass 208 times that of electron). No deflection condition in this case is satisfied if

The working of a dynamo is based on principle of

The unit of inductance is equivalent to

The wing span of an aeroplane is 36 m. If the plane is flying at 400 km/h, the e.m.f. induced between the wings tips is (assume V=4X10)

Which radiation in sunlight, cause heating effect?

If the electric flux entering and leaving an enclosed surface respectively is φ₁ and φ₂ , the electric charge inside the surface will be

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

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

Minimum no. of 8 μF and 250 V capacitors, used to make a combination of 16 μF and 1000 V, is

A 10 μF capacitor is charged to a potential difference 50 V and it is then connected to another uncharged capacitor in parallel. If common potential difference becomes 20 V, then capacitance of the second capacitor is

Two point charges each equal to 2μC are 0.5 m apart. If both of them exist inside vaccum, then electrostatic force between them is

If current in a moving coil galvanometer is increased by 1%, then percentage increase in its deflection will be

Number of particles emitted in the reaction is

In a nuclear reactor heavy water is used as a

If M_O is the mass of an oxygen isotope ₈O¹⁷ , M_p and M_n are the masses of a proton and a neutron, respectively, the nuclear binding energy of the isotope is

Light of wavelength 5000Å falls on a sensitive plate with photoelectric work function of 1.9 eV. The kinetic energy of the photoelectron emitted will be

In photoelectric effect experiment, the stopping potential for incident light of wave-length 4000 Å is 2 volt. If the wavelength is changed to 3000 Å, the stopping potential is

The distance between eye lens and cross wire in Ramsden eye piece which has a field lens of focal length 1.2 cm is .......cm.

If the dispersive power of a lens material of focal length 20 cm is 0.08, then longitudinal chromatic aberration of the lens is

In a transistor circuit, when the base current in increased by 50 micro - amperes keeping the collector voltage fixed at 2 volts, the collector current increases by 1 m A. The current gain of the transistor is

If no external voltage is applied across p-n junction, there would be

Zener diode is used for

Consider the following statements A and B and identify the correct choice of the given answers.
A: The width of the depletion layer in a P-N junction diode increases in forwards bias
B: In an intrinsic semiconductor the fermi energy level of exactly in the middle of the forbidden gap

A semiconductor is cooled from T₁K to T₂K. Its resistance

Avalanche breakdown is due to

In the depletion region of an unbiased P-N junction diode there are

A Nicol prism can be used

A train is approaching a platform with a velocity ν. The frequency heard by an observer standing at the station is

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

The ray of light

2R ― OH + 2Na → 2RONa + H₂. In the above reaction the reactivity of different alcohols is

Reduction of aldehydes with HI give

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

When vapours of isopropyl alcohol are passed over heated copper, the major product obtained is

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

Acid catalysed hydration of alkenes except ethene leads to the formation of

The atomic weight of a substance is expressed in

How many moles of Helium gas occupy 22.4 L at 0^oC at 1 atm. pressure?

Among the following the achiral amino acid is

Which substance is not present in nucleic acid?

The protein which maintains blood sugar level is

Which one of the following esters is obtained by the esterification of propan-2-ol with ethanoic acid?

The acid showing salt like character in aqueous solutions is

Dimerisation in carboxylic acid is due to

Chemical equilibrium is dynamic in nature, because

The law of mass action was given by

For an ideal gas, the relation between the enthalpy change and internal energy change at constant temperature is given by

For a reaction at 300 K, enthalpy and entropy changes are -11.5 x 10³ J mol^-1 and -105J K^-1 mol^-1 respectively. What is the change in Gibbs free energy?

Which of the following is an endothermic reaction?

The substance used in the preparation of malachine green is

The most stable conformation of n-butane is

In co-ordination compound, the co-ordination number of the metal according to Werner's theory, is

Which of the following is a complex salt?

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

When benzenediazonium chloride in hydrochloric acid reacts with cuprous chloride, then chlorobenzene is formed. The reaction is called

Which of the following is not a strong electrolyte?

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

The unit ohm^-1 is used for

Ether is obtained from ethyl alcohol

Chile salt petre is

A sample of gas occupise 100 ml at 27^oC and 740 mm pressure. When its volume is changed to 80 ml at 740 mm pressure, the temperature of the gas will be

Which one of these is acidic?

At.No. of N is 7, the At. No. of the third member of nitrogen family will be

BCl₃ is a planar molecule whereas Ncl₃ is pyramidal because

Which of these substances is a good reducing agent?

Select correct statement(s):

Adsorbed acetic acid on activated charcoal is

Which oxide of manganese is amphoteric?

The metal which does not form coloured compounds is

Find the antonym of ABANDON

Fill in the blank with appropriate word.
If a speech is full of pompous words, it is.........

Find the synonym of ABSONANT

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

Bring forth

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

I will tell you if and when it WILL BE COMPLETED.