Question : Dry ice, ammonium chloride, naphthalene balls and camphor, all these compounds are an example of:
Option 1: Sublimable substances
Option 2: Cooling agents
Option 3: Inflammable substances
Option 4: Solidifying agents
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Correct Answer: Sublimable substances
Solution : The correct answer is Sublimable substances.
Sublimate substances include dry ice, ammonium chloride, naphthalene balls, and camphor. This process occurs when the temperature and pressure of the material are below its triple point. A substance's triple point is the temperature and pressure at which its solid, liquid, and gas phases may coexist in equilibrium. The material can only exist in the solid or gas phase at temperatures and pressures below the triple point.
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Question : Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of
Option 1: Open system
Option 2: Closed system
Option 3: Isobaric system
Option 4: Isothermal system
Question : What is dry ice?
Option 1: Solid Carbon dioxide
Option 2: Solid Nitrogen dioxide
Option 3: Solid Sulphur dioxide
Option 4: Solid water
Question : Wearing away of the landscape by different agents like water, wind and ice is called___________.
Option 1: weathering
Option 2: erosion
Option 3: metamorphosis
Option 4: sedimentation
Question : Which of the following is not a nitrogenous fertiliser?
Option 1: Ammonium sulphate
Option 2: Urea
Option 3: Ammonium Thiosulphate
Option 4: Superphosphate
Question : Super cooling stands for cooling of a liquid:
Option 1: at freezing point
Option 2: below freezing point
Option 3: at melting point
Option 4: above melting point
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