List of practice Questions

Correct order of the size of iodine species is
The IUPAC name of $K_3[Ir(C_2O_4)_3]$ is
In $[Co(NH_3)_6]CI_3$, the number of covalent bonds is
Which of the following is the life saving mixture for an asthma patient ?
What causes nitrogen to be chemically inert ?
Which of the following compound is obtained on passing ethanol vapours on heated $Al_20_3 $?
Which of the following compounds is explosive in nature ?
At room temperature, HCl is a gas while HF is a low boiling liquid. This is because
Ethylene may be obtained by the treatment of concentrated $H_2SO_4$ and $X $ bat $160-170^{\circ} C. X$ is
Work done in uniform circular motion is zero. Force is always directed along displacement.
Water is used as a moderator in nuclear reactor. Moderator is a light substance that absorb neutrons.
o-Nitrophenol is more volatile than p-nitrophenol Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular H bonding is in p-nitrophenol.
Centripetal force does no work. Force and displacement are perpendicular to each other.
At pole value of acceleration due to gravity (g) is greater than that of equator. Earth rotates on its axis in addition to revolving round the sun.
All veins carry deoxygenated blood except
A wire of length $l$ carries a steady current. It is bent first to form a circular plane loop of one turn. The magnetic field at the centre of the loop is $B$. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the centre caused by the same is
Assuming earth to be a sphere of a uniform density, the value of $g$ in a mine $100\, km$ below the earth surface will be
Mass of moon is $ 1/81 $ times that of earth and its radius is $ 1/4 $ the radius of earth. If escape velocity on the surface of the earth is $11.2\,km/s $ . Then the value of escape velocity at surface of the moon will be
Pressure inside two soap bubbles are $1.01$ and $1.02$ atmospheres. Ratio between their volumes is
The angular speed of earth, so that the object on equator may appear weight less, is $ (g=10)\,m/s^{2}$ , radius of earth $6400\,km$
A block slides down an inclined plane making an angle $ \theta =30^{\circ}$ with the horizontal with an acceleration $ \frac{g}{4} $ , then coefficient of frictions will be
A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by $ 1\,m/s$ so as to have same K.E. as that of the boy. The original speed of the man will be
If a cycle wheel of radius $4\,m $ completes one revolution in two seconds. Then acceleration of the cycle will be
A cyclist moves in a circular track or radius $ 100\,m $ . If the coefficient of friction $ 0.2 $ . Then the maximum speed with which the cyclist can take a turn without leaving inwards, is
A wheel of mass $ 10\,kg $ has a moment of inertia of $ 160\,kg-m^2 $ about its own axis, the radius of gyration will be