List of top Chemistry Questions

Magnesium is burnt in air to form $A$ and $B$. When $B$ is hydrolysed, $C$ and $D$ are formed. $D$ is the reactant in the manufacture of nitric acid by Ostwald's process. What is $C$

Correct order of basic strength is :

Calculate emf of cell at 25?C Cell notation $M\left|M^{2+}_{0.01}\right|\left|M^{2+}_{0.00001}\right|M$ If value of E is 4 volt (Given $\frac{RT}{F}$ in 10 = 0.06)

Which of the following statements about $CO_3^{2-}$ ion is correct?

Which of the following transition elements have melting point below $500^\circ$ C?

Which will release $NH_3$ on Reaction with $NaOH$.

Which of the following are formula of methanides? $Be_2C$ $CaC_2$ $Mg_2C_3$ $Al_4C_3$

Which is the chemical test for polysaccharide

Which alkali metal during flame test will show colour corresponding to maximum wavelength?

Silicon carbide is an example of :

Oxidation state of copper is +1 in

Order of acidic nature

On passing silent electric discharge through oxygen in an ozonizer, $5.5\, mol \%$ of oxygen is converted to ozone. How many moles of $O_2$ and $O_3$ result when $35$ moles of $O_2$ is originally present?

Number of visible lines in Balmer series.

Moles of N = 0.4 and moles of O = 0.1. Find $\left(P_{N_2}\right)$ partial pressure of N at atmospheric pressure

IUPAC name of Na[Co(NO)] is

Calculate emf of the following cell at 25?? if value of $E^o_{cell}$ is 4 V (Given $\frac {RT}{F} \, ln\, 10 = 0.06):$ $M | M^{2+} _{0.01}|| M^{2+} _{0.0001}| M$

Which of the following gives Hell-Volhard-Zelinsky $ (HVZ) $ reaction?

At constant pressure, the heat of formation of a compound is not dependent on temperature, when

The unit of equivalent conductivity is

The major organic product formed from the following reaction is

For the following amines. The correct order of basic strength is

The correct order of basic strength is

Phenol + Aniline $ {Phenol + Aniline ->[{C_6H_5N_2^+Cl^-}][{KOH}] Product (P) (Major)}$ Major product (P) will be

(2) CH-CHO (3) p-CH-CH-CHO (4) p-CHO-CH-CHO Correct order for nucleophilic addition reaction :

Find the end product of the following reaction.