BSc Chemistry Foundation Quiz

Phenolphthalein can be used as an indicator in the titration of

• strong acid x strong base

• strong acid x weak base

• weak acid x strong base

• both a and c

Equivalent weight of sodium hydroxide

• 40

• 20

• 80

• 60

Out of the following primary standard is

• Na2CO3

• KMnO4

• KOH

• H2SO4

The colour of methyl orange in the acidic medium is

• pink

• colourless

• golden yellow

• Orange

Potassium permanganate is

• alkali

• acid

• reducing agent

• oxidising agent

Weight of Mohr's salt need to be accurately weighed to prepare 0.1 N 100 mL Mohr's salt solution is

• 1.96 g

• 5.88 g

• 3.92 g

• 0.98 g

The colour of Phenolphthalein in the acidic medium is

• pink

• colourless

• golden yellow

• Orange

Volume of 0.5 N sodium oxalate solution needed to make 0.2 N 250 mL sodium oxalate solution

• 100 mL

• 10 mL

• 20 mL

• 50 mL

In the case of oxalic acid, equivalent weight is

• molecular weight/3

• molecular weight/2

• equal to molecular weight

• both b and c

Which of the following is a common primary standard used in acid-base titrations?

• Sodium hydroxide

• Potassium permanganate

• Oxalic acid

• Hydrochloric acid