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November 27, 2020 0 Comments

QUIZ 15

ylliX - Online Advertising Network

Chemistry 5

What is condensation?
- Change of solid into liquid
- Change of gas into solid
- Change of heat energy into cooling energy
- Change of vapour into liquid
Which of the following metals exhibits similarity in properties of aluminium?
- Sr
- Be
- Ca
- Ba
Name the scientist who stated that matter can be converted into energy
- Boyle
- Lavoisier
- Einstein
- Avogadro
The heavy water is a type of
- Moderator
- Ore
- Coolent
- Fuel
The combustible material at the tip of a safety match stick is
- Manganese dioxide
- Phosphorus
- Sulphur
- Antimony sulphide
The pH of soft drink is
- 3.8
- 3
- 8.5
- 6.5
pH of 0.1 M HCL would be
- -1
- 13
- 1
- 0
The oxide ore is concentrated by
- Froth floatation
- Calcinations
- Electromagnetic separation
- Gravity separation
The colour of ferrous hydroxide precipitate is
- Blue
- Brown
- Dirty green
- White
Which one of the following reaction takes place when carboxylic acid is heated with soda lime?
- Dehydration
- Oxidation
- Dehydrogenation
- Decarboxylation

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