chemistry

Caustic soda is the common name for

• Mg(OH)2

• KOH

• Ca(OH)2

• NaOH

Acids give

• H+ in water

• OH− in water

• Both (a)& (b)

• None of these

Which one of the following is a weak acid?

• HCl

• H2CO3

• H2SO4

• HNO3

Solutions A, B, C and D have pH 3, 4, 6 and 8. The solution with highest acidic strength is

• A

• B

• C

• D

Generally a base is a compound,

• Which reacts with an acid to give salt and water.

• Which reacts with a proton of an acid.

• Which on dissolving in water furnishes OH– ions.

• All are correct.

A base which is soluble in water is called:

• a salt

• an acid

• an alkali

• None of these

Which Acid is present in Tomato?

• Citric Acid

• Oxalic Acid

• Lactic Acid

• HCl

pH value less than 7 indicates that the solution is –

• Acidic

• Basic

• Neutral

• No effect

Lactic Acid is present in-

• Orange

• Tea

• Curd

• Vinegar

Which salt is Acidic in nature?

• NH₄Cl

• CH₃COONH₄

• NaCl

• Na₂CO₃