practical, How can you identify the phenolic-OH gr. of an organic compound...

How can you identify the phenolic-OH gr. of an organic compound which also contain an electron withdrawing group?

Atom, An element L has 9 protons and valency 1. Another element M has valen...

An element L has 9 protons and valency 1. Another element M has valency 3 and 5. What is the difference in the number of electrons in L and M ?

Ionic bond,

When a mole of water is formed from h and o atoms, The bond energy of an O-...

The bond energy of an O- H bond is 109 kcal mol 1. When a mole of water is formed from H and O atoms, then 218 kcal is released. Two O-H bonds are there is H2O so 2*109 kcal an

An electron has principal quantum number, An electron has principal quantum...

An electron has principal quantum number 3. The number of its (i) sub-shells and (ii) orbitals would be respectively: (1) 3 and 5            (2) 3 and 7    (3) 3 and 9

The maximum number of electrons in an orbital, Which of the following princ...

Which of the following principles/rules limits the maximum number of electrons in an orbital to two: (1)  Aufbau principle (2) Pauli's exclusion principle (3) Hund's rule

Draw a temperature-composition phase diagram, Q. Use the following informat...

Q. Use the following information to draw a temperature-composition phase diagram for the binary system of H 2 O (A) and Na 2 SO 4 (B) at p = 1 bar, confining t to the range 20 to

Trends in alkali metals, what is the order of solubility of alkali metal hy...

what is the order of solubility of alkali metal hydrides and halides

Reagent required for determination of hardness of water. , Q.   Name of the...

Q.   Name of the reagent required for determination of hardness of water sample of complex metric method. Briefly give the function of each reagent used. Ans. Reagents requir

Determine the ionization in solutions, Q. Determine the Ionization in Solut...

Q. Determine the Ionization in Solutions? Ans. Ionic compounds dissolve in water because the polar water molecule pulls apart the ions of the ionic compound. This process