List of top Chemistry Questions

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?
For which one of the following systems at equilibrium, at constant temperature will the doubling of die volume cause a shift to the right?
Given that the equilibrium constant for the reaction $ {2SO2(g) + O2(g) <=> 2SO3(g)}$ has a value of278 at a particular temperature. What is the value of the equilibrium constant for the following reaction at the same temperature? $ {SO3(g) <=> SO2(g) + \frac{1}{2} O2(g)}$
Which of the following compounds is formed when a mixture of $K_2Cr_2O_7$ and NaCl is heated with cone. $H_2SO_4$ ?
Compound 'A' of molecular formula $C_4H_{10}O$ on treatment with Lucas reagent at room temperature gives compound ?B\ When compound ?B? is heated with alcoholic $KOH$, it gives isobutene. Compound ?A? and ?B? are respectively
The molecular formula of diphenyl methane, How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom?