Questions

When the positive charge on an ion increases or the negative charge on them decreases it is called as _____.

_____ is an alloy made from iron, nickel and chromium.

The chemical reaction in which two or more products are formed from a single reactant is called _____ reaction.

Aqueous solution of ZnSO₄ is added into the aqueous solution of BaCl₂, this is the example of _____. reaction.

Which of the following method is used to prevent the accumulation of greenish layer on brass due to corrosion

In Modern Periodic Table the number of columns and periods are respectively _____ and _____.

Which one of the following statement about the factors affecting the rate of a chemical reaction is incorrect?

In Wilfley table method to separate particles of gangue _____ method is used.

Which one of the following option is incorrect?

Atomic number of aluminium is _____ and its electronic configuration is _____.

_____ is the outermost shell for elements of period 2.

The chemical formula of zinc blende is _____.

Which pair of atomic numbers represents elements in the same group?

Extraction of moderately reactive elements is done by _____ and _____ method.

Which among the following elements would lose an electron easily?

Corrosion of silver causes a black layer of _____.

Which among the following is the largest element?

In preparation of Aqua regia hydrochloric acid and _____ acid are mixed.

Which one of the following does not increase while moving down the group of the Modern periodic table?

In the reaction given  $CuO+H_2\ \longrightarrow\ Cu+H_2O$  . Copper oxide is _____ and hydrogen is
                          .             

The d-block elements are called as _____ elements

_____ is the least reactive metal.

_____ is the distance between the nucleus of the atom and its outermost shell.

_____ is in liquid form in the halogen family.

The below mentioned details are the periodic trends in the modern periodic table across a period. Which one of the following is incorrect?