The ratio of velocity of electron in 2nd to that in 4th excited state of Be3+ will be
An example of tranquilizer is
Monomer of which of the following has atoms of only two different elements
Arrange the following compounds in the order of leaving group ability
Weaker the base, better is the leaving group. Hence, basicities decrease in the order
Therefore, the order of leaving group ability decreases in the reverse order (IV) > (III) > (I) > (II).
Most basic out of the following is
No resonance and lone pair of electrons on sp3 hybridized N atom.
Identify ‘Y’ in
Identify the products A and B of the following reaction
The strongest acid among the following aromatic compounds is
Nitro is strongly electron withdrawing group. At ortho position intramolecular hydrogen bond reduces the acidic strength.
In which of the following, gauche form is more stable than anti form of conformers?
Gauche form can be more stable when intramolecular H-bonding occurs.
Which of the following derivatives of benzene would undergo hydrolysis most readily with aq. KOH?
– NO2 group increases the reactivity in nucleophilic substitution on benzene ring due to –R and –I effect.
The compound showing maximum number of geometrical isomers is
More number of ligands.
EAN rule is followed by
EAN = 26- 2 + 6 x 2 = 36
Aqueous CuSO4 solution is blue in colour. Which colour is absorbed by it ?
The aqueous solution of CuSO4 consist of the complex [Cu(H2O)4]2+ ion which absorbed in orange-red region and impart deep blue colouration to solution.
Which of the following elements can form square planar fluoride?
Transition temperature of rhombic sulphur to monoclinic sulphur is
Which will have P-P bond?
Least amount of carbon is present in
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%).
During electrophoresis of purple of cassius, the colloidal particles will
Gold sol is negatively charged.
In a reaction, 64.2 M of reactant becomes 32.1 M in 20 second. After 30 second from the start of the reaction 16.05 M is left. The value of rate constant will be
It is zero order reaction,
Correct comparison of ΔTb of the following (aqueous solution) is
1. 0.1 N NaCl
2. 0.1 N CaCl2
3. 0.1 N AlCl3
4. 0.1 N AI2 (SO)4
As no of ions increases, lowering of VP increases.
So, correct order is (1) > (2) > (3) > (4)