MCQs for Unit 1

For the titration of HCl and NH4OH, the suitable indicator is

• Methyl Orange

• EBT

• Phenolphthalein

• None of the above

The precision under the same operating conditions over a short interval of time is called as

• Reproducibility

• Intermediate precision

• Repeatability

• Robustness

The number of moles of a solute per liter of a solution is

• Molality

• Normality

• Molarity

• None

Which method is used for the Limit test for arsenic

• Gutzeit method

• Oswald method

• Arrhenius method

• Karl-Fischer method

The closeness of agreement between a series of measurement obtained from multiple sampling of the homogenous sample is?

• Accuracy

• Precision

• Ruggedness

• Robustness

The equivalent weight of NaOH is

• 36

• 20

• 40

• 13

is used as primary standard for standardization of NaOH.

• Sodium carbonate

• Sodium bicarbonate

• Sodium chloride

• Potassium dichromate

Phenolphthalein has a pH range of

• 6.8-8.4

• 1.2-2.8

• 8.3 11.0

• 4.2-6.3

Errors arise due to the individual analyst is responsible for them

• Method error

• Instrumental error

• Personal error

• Random error

Solution of known concentration

• Standard solution

• Concentration

• Solution

• Concentrated solution