List of top Chemistry Questions

Which of the following is deliquescent ?

Incorrect statement for pyrophosphorus acid $H_4P_2O_5$ is :

Isopropyl bromide on Wurtz reaction gives :

Solvay process is used for the manufacture of:

Milk of magnesia is used as:

Which gas has the highest partial pressure in atmosphere?

Dinitrogen pentoxide $(N_2O_5)$, a colourless solid, is prepared by :

For the gaseous reaction involving the complete combustion of isobutane :

For the reaction (at $1240 \,K$ and $1$ atm.) $ CaCO_3 (s) \rightarrow CaO(s) + CO_2 (g) $ $\Delta H = 176 \, kJ/ mol; \Delta E$ will be :

The oxidation number of oxygen in hydrogen peroxide is:

Dacron is polymer of :

Cyanohydrin of which of the following forms lactic acid:

The molecular electronic configuration of $Be_2$ is:

$KF$ combines with $HF$ to form $KHF_2$. The compound contains the species:

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

When pressure is applied to the equilibrium system ice $\rightleftharpoons$ water. Which of the following phenomenon will happen ?

Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction?

4 g of hydrocarbon $ ({{C}_{x}}{{H}_{y}}) $ on complete combustion gave 12 g of $ \text{C}{{\text{O}}_{\text{2}}}\text{.} $ What is the empirical formula of the hydrocarbon? (C=12,H=1)

Which of the following is obtained in a carbylamine reaction?

Identify X and Yin the following sequence ofreactions $CH_3CHO \xrightarrow{HNO_3} X \xrightarrow{P_4O_{10}} Y $

Which of the following gives paracetamol on acetylation?

Which of the following molecules has zero dipole moment?

Which of the following is not an air pollutant ?

$ {{C}_{2}}{{H}_{2}}+2HCl\to {{C}_{2}}{{H}_{4}}C{{l}_{2}} $ is an example of ......reaction.