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Practice Online Test Series for JEE Main 2018 & NEET 2018
Consider the following acids :
Arrange the acids in the decreasing order of their acidity :
`HO—CH_2CH_2CH_2-overset{overset{O}{||}}{C}-OH` on reaction with `H^+` forms
Which of the following compound yields only one product on monobromination ?
A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at cathode and anode are, respectively :
Sec. butyl chloride will undergo alkaline hydrolysis in the polar solvent by hydrolysis
The principal organic compound formed in the following reaction is
`CH_2=CH(CH_2)COOH+HBr overset{mbox{(peroxde)}}{rightarrow}`
The half-life of a first order reaction is 24 hours. If we start with 10 M initial concentration of the reactant, then the concentration after 96 hours will be
0.5 g of fuming `H_2SO_4` (oleum) is diluted with water. This solution is completely neutralized by 26.7 ml of 0.4 N NaOH. The percentage of free `SO_3` in the sample is
How many chlorine atoms can you ionize in the process `Cl ->Cl^+ + e^–`, by the energy liberated from the following process ?
`Cl + e^– ->Cl^–` for `6×10^(23)` atoms Given electron affinity of Cl =3.61 eV, and IP of Cl = 17.422 eV.
Product I `overset{mbox{aq.KOH}}{leftarrow} C_2H_5Br overset{mbox{alc.KOH}}{rightarrow}` product II
The reaction ; `2O_3 -> 3O_2`, is assigned the followig mechanism :(I) `O_3` ⇌ `O_2+O`
(II) `O_3 +O overset{mbox{(slow)}}{rightarrow} 2O_2` The rate law of the reaction will therefore be
Lanthanoid ion which is most likely to be reduced by Cr(+II) is :
Among the following species identify the isostructural pairs :
`NF_3,NO_3^-,BF_3,H_3O^+,HN_3`
What is A in the following reaction ?
`Et_2CO + NaCN + NH_4Cl overset{(NH_4OH)}{rightarrow}A`
What volume at NTP of ammonia gas will be required to be passed into 30 mL of `NH_2SO_4` to bring down the acid normality to 0.2 N ?
Which of the following will react with acetone to give a product containing C=N– ?
The enthalpy of combustion of `H_2(g)` at 298 K to give `H_2O` is –298 kJ mol–1 and bond enthalpies of H—H and O = O are 433 kJ `mol^(–1)` and 492 kJ `mol^(–1)`, respectively. The bond enthalpies of O—H is
In an fcc arrangement of A and B atoms, where A atoms are at the corners of the unit cell, B atoms at the face centres, two atoms are missing from two corners in each unit cell, then the simplest formula of the compound is :
By how much would the oxidising power of the `MnO_4^-`/ `Mn_2^+` couple change if the `H^+` ions concentration is decreased 100 times :
