in the equation provided , which is the correct statement ?

• H₂O represents base while HF represents conjugated acid

• H₂O represents acid while HF represents conjugated base

• HF represents acid while F^- represents conjugated base

• HF represents base while F^- represents conjugated acid

Which of the following acids never form acidic salt?

• Phosphoric acid

• carbonic acid

• hydrochloric acid

• sulphuric acid

Which of the following will turns litmus paper into blue?

• Vinegar

• orange juice

• soft drink

• baking soda

The salt that dissolves in water giving a solution its pH value is higher than 7 is .........

• NaOH

• K₂SO₄

• NaHCO₃

• NH₄Cl

in the figure provided , if X and Y have the same concentration , So solution X is ....... , while Y is ........

• sodium chloride / glucose

• sodium chloride / aluminum nitrate

• potassium carbonate / aluminum nitrate

• potassium carbonate / glucose

Which of the following solution will have the higher boiling point ?

• 1 M sodium carbonate

• 2 M sodium carbonate

• 1 M iron (II) chloride

• 2 M iron (III) chloride

A mixture of ethanol (boiling point 78C ) and water ( boiling point 100C) is separated by fractional distillation technique , so which graph will represents the concentration versus the time ?

• A

• B

• C

• D

Which of the following values has no unit ?

• Molar concentration

• molal concentration

• pH

• volume

• mass

The mixture of silt in water is ........

• heterogeneous colloidal mixture

• homogenous suspension mixture

• solution which content cannot be separated by filtration

• suspension mixture which content can be separated by filtration

the conjugated base of water is ............

• O^-2

• OH^-

• H3O⁺

• H2O₂