List of top Chemistry Questions

The coordination number of metal crystallising in a hexagonal close packing is
Ionic radii of
A gas will approach ideal behaviour at
A gas $X$ at $1$ atm is bubbled through a solution containing a mixture of $1M$ $Y^-$ and $1 MZ^-$ ions at $25 ^\circ C$. If the reduction potenital of $Z > Y > X$, then
The optically active tartaric acid is named as D-(+)-tartaric acid because it has a positive
In compounds of type $EC1_3$, where E = B , P, As or Bi, the angles Cl-E - Cl for different E are in the order
On heating ammonium dichromate, the gas evolved is
Which of the following gives lactic acid on treating with HCN followed by hydrolysis?
The product obtained, when acetophcnone is treated with zinc-amalgum in cone. $ HCl, $ is:
The oxide which is not reduced by hydrogen is:
The compound which does not possess a peroxide linkage is:
The addition of an inert gas at constant volume to an equilibrium will favour :
Sodium phenoxide, when treated with $ C{{O}_{2}} $ under pressure, give:
Isotonic solution have same:
Colloidal solution of gold is prepared by:
Chlorine reacts with ethanol to give:
Which one of the following compounds, is used in photography?
The smallest among the following ion is:
When a molten ionic hydride is electrolysed :
The oxidation number of nickel in $ {{K}_{4}}[Ni{{(CN)}_{4}}] $ is:
Which of the following particles is not present in the nucleus?
The element which forms ions in the dimeric state is :
In the compound $CH_2=CH-CH_2-CH_2-C \equiv CH$, the $C_2-C_3$ bonds is of
Two cylinders A and B fitted with pistons contain equal amounts of an ideal diatomic gas at 300 K. The piston of A is free to move, while that of B is held fixed. The same amount of heat is given to the gas in each cylinder. If the rise in temperature of the gas in A is 30 K, then the rise in temperature of the gas in B is
A compound, when boiled with aqueous $ N{{a}_{2}}C{{O}_{3}}, $ gives glycol. The compound is: