List of top Chemistry Questions

Among the following compound which can be dehydrated very easily is
Which one of the following statements regarding helium is incorrect ?
In van der Waals equation of state of the gas law, the constant 'b' is measure of
The states of hybridization of boron and oxygenatoms in boric acid $(H_3BO_3)$ are respectively
Among $ {Al_2O_3, SiO_2, P_2O_3}$ and $ {SO_2}$ the correct order of acidic strength is
Which one of the following has the regular tetrahedral structure ?
The maximum number of $90^\circ$ angles between bond pair-bond pair of electrons is observed in
Aluminium chloride exists as dimer,$ { Al_2Cl_6}$ in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives
One mole of water at $100^{\circ} C$ is converted into steam at $100^{\circ} C$ at a constant pressure of $1\, atm .$ The change in entropy is [heat of vaporisation of water at $100{ }^{\circ} C =540\,cal / gm ]:$
The maximum number of electrons present in an orbit $ l=3 $ , is :
The emf of a galvanic cell, with electrode potential of zinc $ =+0.76\,V$ and that of copper $ =0.34\,V $ , is:
The ore camalite is represented by structure:
Quartz is a crystalline variety of:
The number of atoms present in unit cell of a monoatomic substance of simple cubic lattice is:
Glucose and bromine water reacts to produce:
Acetaldehyde gives orange coloured precipitate on treatment with
The formation of the oxide ion $O^{2-}(g)$ requires first an exothermic and then an endothermic step as shown below $O\left(g\right) + e^{-}O^{-} \left(g\right)?H^{\circ} = -142kJmol^{-1}$ $O^{-} \left(g\right) + e^{-}O^{2-} \left(g\right)?H^{\circ} = 844kJmol^{-1}$
Which of the following is called Marsh gas?
Which of the following is not a characteristic of chemisorption ?
Which of the following is not a synthetic fibre?
Which of the following is the chief ore of copper?
Which of the following reagent can distinguish between $1$-Butyne and $2$-Butyne?
Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?
Which one of the following statements about the zeolites is false ?
Which carbon is more electronegative?