List of top Chemistry Questions

The structure of $H_2O_2$ is
The statements for laws of chemical combinations are given below. Mark the option which is not correctly matched.
The stability of hydrophobic sol is due to
The spin only magnetic moment of $ {Ni^{2+}}$ (in B.M.) in aqueous solution will be
The space occupied by b.c.c. arrangement is approximately
The source of nitrogen in Gabriel synthesis of amines is
The solution of nickel sulphate in which nickel rod is dipped is diluted to 10 times. The potential of nickel
The sharp melting point of crystalline solids is due to ________.
The shape of gaseous $SnCl_2$ is
The salt hydrolysis of the salt of strong acid and weak base is called
The role of calcination in metallurgical operation is
The repeating units of PTFE are
The relative abundance of two isotopes of atomic weight 85 and 87 is 75% and 25% respectively. The average atomic weight of element is
The reducing agent used in the thermite process is
The recoil speed of a hydrogen atom after it emits a photon in going from $n = 5$, state to $n = 1$ state is
The radius of the nuclues is proportional (if A is the atomic mass number)
The radius of $n^{th}$ orbit $r_n$ in terms of Bohr radius $(a_0)$ for a hydrogen atom is given by the relation
The purpose of smelting an ore is
The name hydrogen was given by
The maximum amount of $BaSO_4$ precipitated on mixing $BaCl_2 (0.5 M)$ with $H_2SO_4$(1 M) will correspond to
The hydroxide of which of the following element is amphoteric?
The hydride ion, $H^-$, is a stronger base than the hydroxide ion, $OH^-$. Which one of the following reactions will occur if sodium hydride (NaH) is dissolved in water?
The hybridisation and geometry of $ B $ and $ N $ in $ [H_3B {
The helium atom does not contain
The heat of transition is the heat evolved or absorbed when a substance is converted from