Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions

The extent of adsorption increases with the ____________.

The physical adsorption is due to ____________.

The process of separating gangue and other impurities from the metals is known as ____________.

Gravity separation technique is mainly applicable to ____________.

Which among the following transition metal has the lowest melting point?

Transition metals with highest melting point is ____________.

Transition metals with lowest melting point is ______.

Which is the most stable oxidation state of iron?

Electronic configuration of Mn²⁺ is ____________.

Maximum magnetic moment is shown by ____________.

Maximum oxidation state is shown by ____________.

The following amine is called as:

Hydrolysis of starch yields ____________.

Crystals can be classified into basic crystal units, equal to ____________.

How many three-dimensional crystal lattices are possible?

The statement true for \[\ce{N^-_3}\] is ____________.

Which of the following statements is not correct for nitrogen?

Nitrogen is relatively inactive element because ____________.

Pick out the wrong statement.

Among the 15^th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to: