List of top Chemistry Questions

Siderite is mainly ore of
Which of the following statements is not correct for a nucleophile ?
Which one of the following is not an isomer of $3-methylbut-1-yne$?
Magnetic moment 2.84 B.M. is given by (At. nos, Ni=28, Ti=22, Cr=24, Co=27)
Gadolinium belongs to 4f series. It's atomic number is 64. Which of the following is the correct electronic configuration of gadolinium ?
Cryolite is
The metallic lustre exhibited by sodium is due to
Arrange the following compounds in the increasing order of their acidic strength i. $m$-nitrophenol ii. $m$-cresol iii. phenol iv. $m$-chlorophenol
The total number of optical isomers possible for 2,3-dibromobutane is
Photochemical smog always contains
Which among the following is an electron deficient compound?
If $Cu^{2+}$ ions is treated with excess of $KCN$, the complex formed is
Property of the alkaline earth metals that increases with their atomic number is
Which of the following do not have tetrahedral geometry?
Molar heat of vaporisation of a liquid is $6 \,kJ\, mol^{-1}$. If the entropy change is $16 \,J \,mol^{-1}\, K^{-1}$, the boiling point of the liquid is
A compound $A$ has a molecular formula $C_2Cl_3OH$. It reduces Fehling's solution and on oxidation, gives a monocarboxylic acid $B$. $A$ can be obtained by the action of chlorine on ethyl alcohol. $A$ is
The reaction of a primary amine with chloroform and ethanolic solution of $KOH$ is called
Which of the following pairs has the same size?
Which of the following chemicals does not liberate hydrogen gas on reaction with aluminium metal?
In the metallurgy of aluminium when the fused matrix is electrolyzed, the overall reduction reaction is
Hybridized state of bromine in bromine pentafluoride is
Carbon monoxide forms volatile compound with
An element belonging to chalcogen group is
Energy associated with the first orbit of $ {He^+}$ is
In the following compound, the number of ?sp? hybridized carbon is