Chemistry quiz

What happens when a solution of an acid is mixed with solution of base in a test tube?

• Temperature of the solution increases

• Salt formation

• Both (a) and (b)

• None of the above

Which acid is present in tamarind?

• Tartaric acid

• Oxalic acid

• Citric acid

• Lactic acid

Which of the following oxides of iron would be obtained on the prolonged reaction of iron and steam?

• FeO

• Fe2O3 and Fe3O4

• Fe2O3

• None of these

The arrangement for copper, tin, lead and mercury according to the reactivity series is:

• Tin > lead > copper > mercury

• Lead > copper > mercury > tin

• Copper > tin > lead > mercury

• Mercury > tin > copper > lead

Dissolving sugar is an example of

• Physical change

• Chemical change

• Redox reaction

• None of these

Ferrous sulphate decomposed with the evolution of a gas having a characteristic odour of burning sulphur. Identify the type of reaction

• Combination

• Displacement

• Photochemical decomposition

• Thermal decomposition

Which of the following reaction is an example of endothermic reaction?

• Burning of candle

• Evaporation of liquid water to form gases

• Freezing of water

• Acid base neutralization reaction

The reaction between lead nitrate and potassium iodine present ina aqueous solution is an example of

• Decomposition

• Displacement

• Double displacement

• Disproportion

Mild non-corrosive basic salt is

• Calcium hydroxide

• Sodium chloride

• Sodium hydroxide

• Sodium bicarbonate

The chemical mostly used in the preparation of most of the soap is

• Sodium chloride

• Sodium hydroxide

• Potassium chloride

• Potassium hydroxide