acids

which of the following is different from others ?

• SO₂

• Na₂O

• CuO

• Cao

Acids change the colour of methyl orange to

• amber

• pink

• yellow

• red

A base is a compound that releases ..............ios when dissolved in water

• H⁺

• OH⁺

• O^-

• O₂^-

H₂SO_4,HCl and HNO_{3 are generally known as ..........................acids}

• mineral

• edible

• natural

• organic

CaCO₃

• acid

• base

• salt

..........acid is present in curd

• Acetic

• Citric

• Oleic

• Lactic

The nature of an antacid is

• neutral

• acidic

• basic

• amphoteric

The purple colour of cabbage .......................when it is dipped in an acid

• turns red

• disappears

• turns black

• remains as t is

.........................indicators are substances which have diferent odours in acids and bases

• Universal

• Olfactory

• Inorganic

• Organic

CsOH

• acid

• base

• salt