List of top Chemistry Questions

The pH of neutral water is 6.5,then the temperature of water is
The $pH$ of succus entericus is
The pH of tears coming out of a person's eye is approximately
The pH of a 0.1 M aqueous solution of $NH_4OH$ is : $(K_b = 1.0 \times 10^{-5})$
The pH of a solution prepared by mixing 2.0 mL of HCl solution of pH 3.0 and 3.0 mL of NaOH of pH 10.0 is
The pH of $D_2O$ and $H_2O$ at 298 K is
The percentage of element M is 53 in its oxide of molecular formula $M_2O_3$. Its atomic mass is about
The percentage of radioactive substance left after 5 half lives is
The peptide linkage formed between glycine $(NH_{2}CH_{2}COOH)$ and alanine
to give glycylalanine can be shown as
The percentage by weight of hydrogen in $H_2O_2$ is
The particle size ranges from_________in colloidal state
The partial pressure of hydrogen in a flaskcontaining 2 g of $H_2$ and 32 g of $S0_2$ is
The oxide which on dissolving in water turns blue litmus red is
The oxide of nitrogen that is neutral in character is
The pale blue syrupy liquid, $H_{2}O_{2}$ discovered by J. Thenard, is estimated by using
The oxidation state of oxygen in $O_2F_2$ is
The oxidation state of phosphorus vary from
The oxidation states of iodine in $ {HIO_4, H_3IO_5}$ and $ {H5IO6}$ are respectively
The oxidation states shown by hydrogen are
The oxidation number of sulphur in $ {H2S2O7}$ is:
The oxidation state of Fe in $K_4[Fe(CN)_6]$ is
The oxidation state of osmium (Os) in $ {OsO_4}$ is
The oxidation state of oxygen in $O_2 Pt F_6$
The oxidation number of P in $Mg_2P_2O_7$ is
The oxidation number of S in $ {Na_2S_4O_6}$ is