List of practice Questions

In van der Waals equation of state of the gas law, the constant 'b' is measure of
Which one of the following has the regular tetrahedral structure ?
The maximum number of $90^\circ$ angles between bond pair-bond pair of electrons is observed in
Among $ {Al_2O_3, SiO_2, P_2O_3}$ and $ {SO_2}$ the correct order of acidic strength is
Aluminium chloride exists as dimer,$ { Al_2Cl_6}$ in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives
The emf of a galvanic cell, with electrode potential of zinc $ =+0.76\,V$ and that of copper $ =0.34\,V $ , is:
The maximum number of electrons present in an orbit $ l=3 $ , is :
One mole of water at $100^{\circ} C$ is converted into steam at $100^{\circ} C$ at a constant pressure of $1\, atm .$ The change in entropy is [heat of vaporisation of water at $100{ }^{\circ} C =540\,cal / gm ]:$
Glucose and bromine water reacts to produce:
The number of atoms present in unit cell of a monoatomic substance of simple cubic lattice is:
The ore camalite is represented by structure:
Quartz is a crystalline variety of:
Acetaldehyde gives orange coloured precipitate on treatment with
The formation of the oxide ion $O^{2-}(g)$ requires first an exothermic and then an endothermic step as shown below $O\left(g\right) + e^{-}O^{-} \left(g\right)?H^{\circ} = -142kJmol^{-1}$ $O^{-} \left(g\right) + e^{-}O^{2-} \left(g\right)?H^{\circ} = 844kJmol^{-1}$
A wire fixed at the upper end stretches by length by applying a force $F$. The work done in stretching is
A variable circle passes through the fixed point A (p, q) and touches x-axis. The locus of the other end of the diameter through A is
A truck travelling due north at $20 \,ms$ turns west and travels with same speed. What is the change in velocity?
The magnetic field $ \vec{B} $ in a circular coil does not depend on:
The radius of gyration of a hollow spherical shell is $2.5\, J$. If its frequency of rotation is made 10 times, then new kinetic energy will be:
A satellite of mass $m$ revolves around the earth of radius $R$ at a height $x$ from its surface. If $g$ is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is
The variation of induced emf (e) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as
Which of the following is called Marsh gas?
Which of the following is not a characteristic of chemisorption ?
Which of the following is not a synthetic fibre?
Which of the following is the chief ore of copper?