List of top Chemistry Questions

Choose the correct option(s) from the following
Calamine, malachite, magnetite and cryolite, respectively, are
The cyanide process of gold extraction involves leaching out gold from its ore with $CN^-$ in the presence of Q in water to form R. Subsequently, R is treated with T to obtain Au and Z. Choose the correct option(s)
Which of the following statement(s) is(are) correct regarding the root mean square speed ($U_{rms}$) and average translational kinetic energy $\left(\varepsilon_{av}\right)$ of a molecule in a gas at equilibrium ?
Which of the following has the highest melting point?
Which of the following is not a cystalline allotrope of carbon?

\(${CH3 - CH2 - CH = CH2 ->[X] CH3CH2 - CH2 -CH2OH}$\) Reagent 'x' is?

Which of the following is not correct ?
Which of the following set of quantum numbers belong to highest energy?
Which of the following colligative properties can provide molar mass of proteins (or polymers or colloids) with greatest precision?
What is the oxidation number of Cr in NaCrO?
Tetragonal crystal system has the following unit cell dimensions
In which of the following oxidation state of phosphorous is +3?
During adsorption
BrO changes into Br in an acidic medium of a unbalanced equation. How many electron should be present in the balanced equation?
Biochemical oxygen demand(BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct?
Which type of defect is present in NaCl.
Invert sugar is a mixture of
Azimuthal quantum number describes the
Which cleansing agent gets precipitated in hard water?
The molecules of which of the following gases has the highest speed?
Which of the following oxides would be reduced by C? ${Al_2 O_3, MgO, ZnO , CaO, Fe_2 O_3 , PbO} $
Nylon 66 is formed by
In which compound does H show O. N of -1?
A group 13 element 'X' reacts with chlorine gas to produce a compound $XCl _{3} . XCl _{3}$ is electron deficient and easily reacts with $NH _{3}$ to form $Cl _{3} X \leftarrow NH _{3}$ adduct; however, $XCl _{3}$ does not dimerise. $X$ is