List of practice Questions

Which of the following is a dimensionless quantity?
Which of the following is amphoteric oxide? $Mn_2O_7$, $CrO_3$, $Cr_2O_3$, $CrO$, $V_2O_5$, $V_2O_4$
Which of the following is the electronic configuration of $Cu^{2+}$ (Z=29)?
Which of the following is used in photography?
Which of the following molecule has regular geometry?
Which of the following phosphorus is mostreactive ?
Which of the following undergoes sublimation ?
Which is the weakest out of HF, HCl HBr and HI?
Which element out of He, Ar, Kr and Xe formsleast number of compounds ?
Two gases, ammonia and hydrogen chloride, are passed in a long glass tube from opposite ends. The white ring will be formed at:
Three of the six vertices of a regular hexagon are chosen at rondom. The probability that the triangle with three vertices is equilateral, equals
The volume of carbon dioxide gas evolved at S.T.P. by heating $7.3\, gm$ of $Mg \left( HCO _{3}\right)_{2}$ will be
The tension in piano wire is $10 \,N$.What should be the tension in the wire to produce a note of double the frequency?
The rotenone is
The restriction enzymes are used in genetic engineering, because
The reactance of an inductance of $0.01\, H$ to a $50 \,Hz$ A.C. is
The radius vector, drawn from the Sun to a planet sweeps out equal areas in equal lines. This is the statement of
The power factor varies between
The polyembryony commonly occurs in
The oxidation number of oxygen atom in $O^{2-}_2$ ion is
The number of unpaired electron in Ni2+ is ?
The number of unpaired electrons in ferrous ion(Z = 26) is
The law of mass action was given by
The lac operon is an example of
The important ore of aluminium is