EASY
Earn 100

Difference between evaporation and vaporisation?

Important Questions on Energy Transfers in Chemistry

EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
"Spirit kept in an open watch glass is converted into gaseous state even at room temperature". Explain.
MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
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>Energy Transfers in Chemistry>Energy Transfers in Changes of State
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.
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State

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.

MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
What is evaporation? How will you show that evaporation causes cooling?
MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
Equal amounts of water and alcohol are separately placed in two identical Petri dishes. Which will evaporate faster - water or alcohol?
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
The process of change of a liquid into vapour at any temperature is called -
MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
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. 
 
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
What is known as evaporation?
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
The process of losing vapours from a liquid or solution below its boiling point is called _____.
MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
How do evaporation and boiling differ? Explain.
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
Define evaporation.
MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State

Define:

A. evaporation

B. sublimation

MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
 What is evaporation? In what way is it different from boiling?
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
Which of the following is a surface phenomenon?
MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State

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

EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State

Define the following term:

Evaporation

MEDIUM
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
Define the following: Evaporation
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
Define the term: Evaporation
EASY
Science>Chemistry>Energy Transfers in Chemistry>Energy Transfers in Changes of State
Cotyledons are also called-