List of top Questions asked in TS EAMCET

In Ostwald process of manufacture of nitric acid, 12 moles of NH3 was completely oxidized in air by a catalyst at 500 K and 9 bar. The resultant NO(g) was completely oxidized to NO2(g) and dissolved in water to form nitric acid and NO(g). What is the weight (in g) of nitric acid formed?
Observe the following two statements: I. For an isolated system, \( \Delta U = 0 \); \( q = 0 \) II. For a closed system, \( \Delta U = 0 \); \( q \neq 0 \) The correct answer is
Two statements are given below: I. Sodium hexametaphosphate is used in calgon method for removal of permanent hardness of water II. Lithium forms interstitial hydrides Identify the correct answer
The correct order of reducing power of alkali metals in aqueous solution is
The power gain of a transistor operating in common emitter configuration is 32,000. If the input and output resistances of the circuit are 1200 \( \Omega \) and 6000 \( \Omega \) respectively, then the current gain is:
Electromagnetic radiation has electric and magnetic field components. These two components:
The first ionization enthalpies of the elements X, Y, Z of the second period are 899, 1402, 520 kJ/mol respectively. X, Y, Z respectively are:
The quality factor of a series LCR resonant circuit is 75. If the resistance is decreased by 50\% and the inductance is increased by 100\%, then the quality factor of the circuit is:
Two photons of energies 2.5 eV and 5.5 eV incident on a metal surface of work function 1.5 eV. The ratio of the maximum speeds of the photoelectrons emitted from the metal surface is:
In a nuclear reactor of efficiency 25\%, the number of fissions taking place per second is \( 5 \times 10^{13} \). If 200 MeV energy is released per fission, then the output power of the reactor is:
A current \( i \) flows through a circular loop of radius \( R \). The ratio of the magnetic field produced at its centre to the field produced at a point at a distance \( \frac{R}{\sqrt{3}} \) from its centre on its axis is:
Two particles of charges in the ratio \( 1:2 \) and masses in the ratio \( 2:3 \) moving along a straight line enter a uniform magnetic field at right angles to the direction of the field. If the radii of the circular paths of the particles in the magnetic field are in the ratio \( 3:4 \), then the ratio of the initial linear momenta of the two particles is:
Magnetic field on the axis of a short bar magnet of magnetic moment \( M \), at a distance \( x \) from its centre is:
The self-induced emf of a coil is 36 V. If the current in the coil is changed from 12 A to 24 A in one second, then the change in the energy stored in the coil is:
If the tension applied to a string is decreased by 36\%, then the fundamental frequency of the transverse waves of the string is:
The frequency of sound heard by a stationary observer is \( f_1 \), when the source of sound is approaching the observer with a speed of 10\% of the speed of sound. If the same source of sound is moving away from the stationary observer with a speed of 20\% of the speed of sound, the frequency of sound heard by the observer is \( f_2 \). Then \( f_1 : f_2 \) is:
A boy of height 1.2 m is standing in front of a large concave mirror of radius of curvature 20 m at a distance of 40 m from the mirror. The distance of the image of the boy from the boy is:
A black body at a temperature of 125$^\circ$C emits heat at the rate of 32 W. The rate of heat emitted by the body when the temperature of the body is increased by 398 K is:
A 60 kg man standing on a bridge, jumps vertically down onto a 540 kg boat moving in the river below him with a speed of 10 m/s. The change in the speed of the boat is:
An arc making an angle \(15^\circ\) at the center is removed from a ring of mass \( M \) and radius \( R \). The moment of inertia of the remaining ring about an axis passing through its center and perpendicular to its plane is:
A supposition without assuming that it is true is:
The density of a substance of mass 5.318 g which occupies a volume of 2.43 cm³ is (up to correct significant figures):
Pebbles are dropped freely for every half second into a river from a bridge above it. When the first pebble is about to strike the surface of the water, the fifth pebble is dropped. Then the height from the surface of the water from which the pebbles are dropped is (Acceleration due to gravity = 10 m/s²).
If sex index ratio in Drosophila is 0.33, the sexual phenotype of it is:
Eusthenopteron is a transitional form between: