List of practice Questions

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is
Hydrogen atom is excited from ground state to another state with principal quantum number equal to $4$. Then the number of spectral lines in the emission spectra will be
Household gaseous fuel (LPG) mainly contains
Grey crescent is the area
Find the sequence of binding of the following aminoacyl t-RNA complexes during translation to m-RNA transcribed by a DNA segment having the base sequences 3' TACATGGGTCCG5' . Choose the answer showing the correct order of alphabets
Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorised as :-
Which one of the following contains $P - O - P$ bond ?
An orthotropous ovule is the one, in which micropyle and chalaza are
Addition of ${O_2}$ on ethylene in presence of Ag at ${200?C}$ forms
A transformer has $500$ primary turns and $10$ secondary turns. If the secondary has resistive load of $15 \,\Omega$, the currents in the primary and secondary respectively, are
A thin glass (refractive index 1.5) lens has optical power of -5 D in air. Its optical power in a liquid medium with refractive index 1.6 will be
A train of $150 \, m$ length is going towards north direction at a speed of $10 \, ms^{-1}$. A parrot flying at the speed of $5 \, ms^{-1}$ towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
A proton, a deuteron and an $\alpha$-particle accelerated through the same potential difference enter a region of uniform magnetic field, moving at right angles to $B$. What is the ratio of their K.E.?
A person walks up a stationary escalator in time $t_1$. If he remains stationary on the escalator, then it can take him up in time $t_2$. How much time would it take him to walk up the moving escalator?
A particle is released from a height $h$. At a certain height, its kinetic energy is two times its potential energy. Height and speed of the particle at that instant are
When tail is cylindrical and ventral scales do not extend the entire width of the belly, the snake is
The presence of two types of nuclei, a macronucleus and a micronucleus, is characteristic of protozoans which are grouped under the class
Which of the following is not an advancement of crocodilians over other reptiles?
Many blue-green algae occur in thermal springs (hot water springs). The temperature tolerance of these algae has been attributed to
A good example for recapitulation theory is/are
A localised inflammatory response appears at the site of infection causes redness, swelling, pain and heat due to certain chemicals. They are
Phenetic classification of organisms is based on
A flywheel rotates with a uniform angular acceleration. Its angular velocity increases from $20\pi \, { rad\, s^{-1}}$ to $40\pi \, { rad\, s^{-1}}$ in 10 seconds. How many rotations did it make in this period?
The wavefront of a distant source of unknown shape is approximately
Which one of the following substances has the largest specific heat?