EASY
Earn 100

Which of the following is a surface phenomenon?

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Important Questions on Matter in our Surroundings

EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
"Spirit kept in an open watch glass is converted into gaseous state even at room temperature". Explain.
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
Take two plants, keep plant A in very dry conditions and plant B in high humidity. Simultaneously, immerse the roots of both plants in water with a red dye. What would you observe?
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange these plants in the order (faster to slowest) in which they will dry up.
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
Which separation techniques will you apply for the separation of the following mixtures? 
a. Sodium chloride from its solution in water. 
b. Ammonium chloride from a mixture containing sodium chloride and ammonium chloride. 
c. Small pieces of metal from the engine oil of a car. 
d. Benzene from a mixture of benzene and methylbenzene. 
e. Different pigments from an extract of flower petals. 
 
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
 What is evaporation? In what way is it different from boiling?
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
Define the term: Evaporation
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
The process of change of a liquid into vapour at any temperature is called -
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
In hydrophytes, the rate of carbon assimilation is
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation

Define evaporation. Give an example that indicates that evaporation is an endothermic process.

MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
How do evaporation and boiling differ? Explain.
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation

Define the following term:

Evaporation

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Science>Chemistry>Matter in our Surroundings>Evaporation
What is evaporation? How will you show that evaporation causes cooling?
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
Equal amounts of water and alcohol are separately placed in two identical Petri dishes. Which will evaporate faster - water or alcohol?
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation

Give an example for the mixture having the following characteristics. Suggest a suitable method to separate the components of the mixture.

A volatile and a non-volatile component.

EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
What is known as evaporation?
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
Is evaporation an endothermic or exothermic process? Give one example to support your answer.
MEDIUM
Science>Chemistry>Matter in our Surroundings>Evaporation
Define the following: Evaporation
HARD
Science>Chemistry>Matter in our Surroundings>Evaporation
What is evaporation? Discuss three factors on which evaporation depends.
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
The process of losing vapours from a liquid or solution below its boiling point is called _____.
EASY
Science>Chemistry>Matter in our Surroundings>Evaporation
Cotyledons are also called-