1.0 g of magnesium is burnt with in a closed vessel. Which reactant is left in excess and how much ?
(At. wt. Mg = 24 ; O = 16)

Although chlorine is an electron withdrawing group, yet it is ortho- and para-directing in electrophilic aromatic substitution reaction because
(A) Chlorine withdraws electrons through inductive effect.
(B)Chlorine destabilises the intermediate carbocation formed during electrophilic substitution.
(C) Chlorine accepts electrons through resonance.
(D) Chlorine releases electrons through resonance.
Choose the correct answer from the options given below:

In Etard reaction, the final product is

The increasing order of acidity of the following compounds based on pKa values is

Choose the correct answer from the options given below:

Arrange the following in decreasing order of number of molecules contained in:

Choose the correct order from the options given below:

The boiling point of water is ..................

Bronze medal is a mixture of

What is the process by which alum purifies dirty water?

What is the molecular mass of an ozone molecule?

The chemical formula of gypsum is-

Although chlorine is an electron withdrawing group, yet it is ortho- and para-directing in electrophilic aromatic substitution reaction because
(A) Chlorine withdraws electrons through inductive effect.
(B)Chlorine destabilises the intermediate carbocation formed during electrophilic substitution.
(C) Chlorine accepts electrons through resonance.
(D) Chlorine releases electrons through resonance.
Choose the correct answer from the options given below: