The product of two successive positive integers is 462. Which is the smaller integer ?

If the difference between a number and two fifth of the number is 30, find the number .

IF the sum of four consecutive even number  is 228. Which is the smallest of the number ?

If the following fractions are arranged in descending order which will be the last in the series ?

What is the least number to be added to 3986 to make it a perfect square ?

What is 234 time 167 ?

The product of two consecutive even number is 4488. Which is the smaller number ?

If the fractions  are arranged in ascending order of their values, which one will be the fourth ?

What is the least number to be added to 1416 to make it perfect square ?

What is 147 times 329 ?

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

For the intrinsic gallium-arsenide, the conductivity at room temperature 25°C is 10^-6 (ohm-m)^-1, the electron and hole nobilities are 0.85 m²/V-s and 0.04 m²/V-s respectively. What is the intrinsic carrier concentration at the room temperature?

The resistivity of intrinsic germanium at 30°C is 0.46 –m. What is the intrinsic carrier density at 30°C if the electron mobility is 0.38 m²/V-s and the hole mobility is 0.18 m²/V-s?

Heat conduction in a semiconductor takes place

Brewster angle is the angle when a wave is incident on the surface of a perfect dielectric at which there is no reflected wave and the incident wave is

An electrical breakdown of a p-n junction occurs if

The chief deterrent to the widespread application of superconducting materials is

Which one of the following properties is not observed in the carbon nanotubes ?

The evidence for the importance of electron-phonon interaction in super-conductors comes from

Which one of the following materials is used for cable insulation ?

For high speed reading and storing of information in a computer, the material used is

The temperature above which an anti-ferromagnetic material becomes paramagnetic is called

Which effect is the converse of Peltier effect ?

Magnetic materials which may be readily magnetized in either direction are

Consider the following statements regarding a ferromagnetic material:
1.Below the ferromagnetic Curie temperature, the ferromagnetic materials exhibit hysteresis effect.
2.The coercive force is the filed required to reduce the flux density to zero. 
Which of the above statements is/are correct?

The impact ionization phenomenon in semiconductor may be viewed as the reverse process of

Refractive index of a slice glass can be reduced by doping it with tiny amount of

If a diameter of a copper wire is increased by two times keeping its terminal voltage same, then the drift velocity will

In an induction type energy meter, the steady speed attained by the rotating disc is
1.Proportional to the deflecting torque.
2.Proportional to the resistance of the path of eddy currents.
3.Inversely proportional to the effective readings of disc from its axis.
4.Inversely proportional to the square of brake magnetic flux. 
Which of the above are correct?

If ‘KCLFTSB’ stands for ‘best of  luck’ and ‘SHSWDG’ stands for ‘good wishes’, which of the following indicates ‘ace the exam’?

Consider  the following statements associated with the basic electrostatic properties of ideal conductors:
1.The resultant field inside is zero.
2.The net charge density in the interior is zero.
3.Any net charges reside on the surface.
4.The surface is always equipotential.
5.The field just outside is zero. 
Which of the above statements are correct?

A semiconductor device made out of a material having very high temperature coefficient of resistance is

The electrical conductivity of a semiconductor increases with increase in temperature because

Which of the following are associated with soft superconductors?
1.Silsbee’s rule
2.Meissner effect
3.Faraday rotation
4.Curie-Weiss law

In a two-channel oscilloscope operating in x-y mode, two in-phase 50 Hz sinusoidal waveforms of equal amplitude are fed to the two channels. What will be the resultant pattern on the screen?

Materials, whose resistivity at very low temperature plunges from a finite value to zero and remains there upon further cooling, are known as

In a superconductor, is the temperature is decreased below its critical temperature, the value of critical magnetic field will

The imaginary part of dielectric constant determines

Direction: Each of the items consists of two statements, one labeled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes given below

In 8085A microprocessor, the operation performed by the instruction LHLD 2100 H is                                    

The waves produced by a motorboat sailing in water are :

A student measures the distance traversed in free fall of a body, initially at rest in a given time. He uses this data to estimate g; the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are e¹ and e² respectively the percentage error in the estimation of g is

Which of the following logic gates Is an univ eNal gate ?

A ray of light is incident on a 60° prism at the minimum deviation position. The angle of refraction at the first face (ie, incident face) of the prism is

     For transistor action
    (1) Base, emitter and collector regions should have similar size and doping concentrations.
    (2) The base region must be very thin and lightly doped.
    (3) The emitter-base junction is forward biased and base-collector junction is reverse biased.
    (4) Both the emitter-base junction as well as the base collector junction are forward biased.
    Which one of the following pairs of statements is correct?

The velocity with which a projectile must be fired so that it escapes earth’s gravitation does not depend on :

The amount of heat measured in calories needed to raise the temperature of 1 gram of substance by 1 degree centigrade is known as

A closely wound solenoid of 2000 turns and area of cross-section 1.5 × 10^–4 m² carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field 5 × 10^–2 T making an angle of 30° with the axis of the solenoid. The torque on the solenoid will be

A particle having a mass of 10^–2 kg carries a charge of 5 × 10^–6 C. The particle is given an initial horizontal velocity of 105 ms^–1 in the presence of electric field  and magnetic field . To keep the particle moving in a horizontal direction, it is necessary that
    (1)  should be perpendicular to the direction of velocity and  should be along the direction of velocity.
    (2) Both  and  should be along the direction of velocity.
    (3) Both  and  are mutually perpendicular and perpendicular to the direction of velocity.
    (4)  should be along the direction of velocity and  should be perpendicular to the direction of velocity.
    Which one of the following pairs of statements is possible?

The physical quantity which has the dimensional formula M1T - Is

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is Mg 

The pressure exerted by 6.0 g of methane gas in a 0.03 m³ vessel at 129° C is (Atomic masses : C = 12.01, H = 1.01 and R –8.314 JK^–1 mol^–1) 

Among the following four compounds 
A. Phenol                  
B. Methyl pheno
C. meta-nitrophenol     
D. para nitrophenol the acidity order is

Among the following which one has the highest cation to anion size ratio?

Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

Consider the following relations for emf of a electrochemical cell
(A) Emf of cell = (oxidation potential of anode) – (reduction potential of cathode)
(B) Emf of cell = (oxidation potential of anode) + (reduction potential of cathode)
(C) Emf of cell = (reduction potential of anode) + (reduction potential of cathode)
(D) Emf of cell = (oxidation potential anode) –  (Oxidation potential of cathode)
Which of the above relations are correct?

 Match List I (substances) with List II (processe employe in the manufacture of the substances) and select the correct option.
  List I                                  List II  
 (Substances)                   (Processes)
 A.Sulphuric acid         1. Haber’s process
 B.Steel                      2. Bessemer’s  process
 C.Sodium                  3. Leblanc process hydroxide    
 D.Ammonia               4. Contact process

When glycerol is treated with excess of HI, it produces

Some statements about heavy water are given below
    (A) Heavy water is used as moderator in nuclear reactors.
    (B) Heavy water is more associated than ordinary water.
    (C) Heavy water is more effective solvent than ordinary water.
 Which of the above statements are correct?

Which of the following oxidation states is the most common among the lanthanoids?

Which one of the following pairs of structures is correctly matched with their correct description?

Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the 

Which one of the following statements about the particular entity is true?

Which one of the following is a xerophytic plant in which the stem is modified into the flat green and succulent structure?

Which of the following is used in gene cloning?

When domestic sewage mixes with river water

In which one of the following organism, its excretory organs are correctly stated?

The most apparent change during the evolutionary history of Homo sapiens is traced in

Which one of the following is now commercially produced by biotechnolo procedures?

If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?