Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions for Chemistry

Write IUPAC name of the complex [Pt(en)₂Cl₂]. Draw structures of geometrical isomers for this complex. 

Why dextro and laevorotatory isomers of Butan-2-ol are difficult to separate by fractional distillation? 

Write chemical equation of the following reaction : 
Acetophenone is treated with `("Zn"("Hg"))/"Conc.HCl"`.

Define the following term with a suitable example in each:
Broad-spectrum antibiotics

Define the following term with a suitable example in each:
Disinfectants

At 100°C the vapour pressure of a solution containing 6.5 g a solute in 100 g water is 732 mm. If K_b = 0.52, the boiling point of this solution will be ______.

The coordination number of AB having rock salt geometry is ____________.

When a reversible work is done by a galvanic cell, the relationship between Gibbs free energy and emf of the cell is given by the relationship as ____________.

For the first order reaction, half-life is equal to ____________.

The chemical reaction in which reactants require high amount of activation energy are generally ____________.

The rate of chemical reaction becomes double for every 10° rise in temperature because of ____________.

\[\begin{array}{cc}
\phantom{.}\ce{OH}\\
|\phantom{..}\\
\ce{O=P-OH}\\
|\phantom{..}\\
\ce{OH}
\end{array}\]

is the structure of:-

Which among the following is an ambidentate ligand?

Which of the following pair contains a complex salt and double salt respectively?

For the same alkyl group, an alkyl bromide has a higher boiling point than alkyl fluoride because:

The following reaction takes place in the presence of:

Arrange the following in decreasing order of their basic strength:

C₆H₅NH₂, C₂H₅NH₂, (C₂H₅)₂NH₂, NH₃

The cyclic form of fructose is called __________.

Hexagonal close packed arrangement of ions is described as ____________.

The arrangement ABC ABC.... is referred to as ____________.