Science Practice Quiz 165

Q1.When a solution is basic, what colour does phenolphthalein indicator give?

A. Colourless B. Blue C. Red D. Pink

Q2.What is the colour of phenolphthalein indicator when a solution is acidic?

A. Pink B. Blue C. Colourless D. Red

Q3.How do acids affect blue litmus paper?

A. They turn it blue B. They turn it red C. They make it colourless D. They have no effect

Q4.How do bases affect red litmus paper?

A. They turn it red B. They turn it blue C. They make it colourless D. They have no effect

Q5.What is the term for the process that occurs when an acid is mixed with a base?

A. Oxidation B. Reduction C. Neutralisation D. Precipitation

Q6.What is defined as 'acid rain'?

A. Rain containing excess of bases B. Rain containing excess of salts C. Rain containing excess of acids D. Rain containing excess of pollutants

Q7.Which of the following gases are released into the air as pollutants and dissolve in raindrops to form acids, leading to acid rain?

A. Oxygen, hydrogen, nitrogen B. Carbon dioxide, sulphur dioxide, nitrogen dioxide C. Methane, ammonia, ozone D. Chlorine, fluorine, argon

Q8.Carbon dioxide, sulphur dioxide, and nitrogen dioxide dissolve in raindrops to form which acids, respectively?

A. Carbonic acid, sulphurous acid, nitrous acid B. Carbonic acid, sulphuric acid, nitric acid C. Acetic acid, hydrochloric acid, phosphoric acid D. Citric acid, lactic acid, tartaric acid

Q9.Acid rain can cause damage to which of the following?

A. Only plants and animals B. Only historical monuments C. Buildings, historical monuments, plants and animals D. Only buildings and historical monuments

Q10.Why should great care be taken while handling laboratory acids and bases?

A. Because they are expensive and rare B. Because they are corrosive in nature, irritating and harmful to skin C. Because they are difficult to store and transport D. Because they can evaporate quickly

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Science Practice Quiz 165