List of practice Questions

Which of the following will deflect in electric field?
The energy produced in the sun is due to
If at same temperature and pressure, the densities for two diatomic gases are $d_1$ and $d_2$ respectively, then the ratio of velocities of sound in these gases will be
A convex lens of focal length $40\, cm$ is in contact with a concave lens of focal length $25 \,cm$. The power of the combination, is
Which of the following is flightless bird ?
Which of the following is not applicable to coelenterates ?
Which of the following form(s) a virtual and erect image for all positions of the object ?
The orbital angular momentum of an electron in 2s-orbital is
The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to
Sodium thiosulphate is prepared by
$KF$ combines with $HF$ to form $KHF_2.$ The compound contains the species
If the distance between the earth and the sun were half its present value, the number of days in a year would have been
If $\alpha$ is the fraction of HI dissociated at equilibrium in the reaction, ${ 2HI(g) <=> H_2(g)+I_2(g)}$ starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are
Which of the following is the least stable and its existence is doubtful ?
An aqueous solution $FeSO_4 . Al_2(SO_4 )_3$ and chrome alum is heated with excess of $Na_2 0_2$ and filtered. The materials obtained are
A shell is fired from a cannon with a velocity v (m/s) at an angle 0 with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed (m/s) of the other piece immediately after the explosion is
Hydrolysis of one mole of peroxodisulphuric acid produces
Which one of the following oxides is neutral ?
A dilute aqueous solution of $ Na_2SO_4 $ is electrolysed using platinum electrodes. The products at the anode and cathode are respectively
Which of the following ion in aqueous medium has orange colour?
Which of the following acids, will be able to give silver mirror test?
Which is a true fish?
What is the oxidation number of chromium in chromyl chloride?
The power of water pump is 4 kW. The volume of water it can raise in one minute to a height of: (Assume $ g=10\,m/{{s}^{2}} $ )
The number of possible optical isomers of lactic acid are: