96) When a metal atom forms ionic bond with a non-metal atom, the atom

A) gains electrons
B) lose electrons
C) share electrons
D) neither lose nor gain electrons

97) If the valency of sodium is 1 and oxygen is 2, then the formula of compound formed between sodium and oxygen is

A) Nao
B) Na₂O₂
C) Na₂O
D) NaO₂

98) Triple bond between nitrogen atoms is N₂ molecule contains

A) 1 sigma bond and 2π bonds
B) 2 sigma bonds and 1π bond
C) 3 sigma bonds
D) 3π bonds

99) In nature, gold metal is available in free state(native), because

A) it is less reactive
B) it is more reactive
C) it is independent of reactivity
D) none of these

100) The impurities such as soil and sand associated with ore are called

A) slag
B) flux
C) mineral
D) gangue