No student devices needed. Know more
10 questions
Which one of the following is an example of a fluid?
Oxygen
Carbon
Phosphorus
Sulphur
235K = _________°C
38
-20
20
-38
Which of the following statements is NOT true?
The molecules in a liquid and a gas can flow.
The molecules in a liquid are arranged in a regular pattern.
The molecules in a gas move about randomly at high speed.
The molecules in a solid vibrate about a fixed position
Name the process by which dry ice changes into carbon dioxide gas.
Evaporation
Condensation
Sublimation
Vaporisation
At what temperature liquid water and steam co-exist?
At the melting point of ice
At the boiling point of water
At the freezing point of water
At the condensation point
Melting point of ice is
273.16K
373.15K
100°C
250.18K
Which of the following undergoes sublimation?
Sodium chloride
Potassium chloride
Ammonium sulphate
Ammonium chloride
In which of the following conditions, the distance between the molecules of hydrogen gas would decrease?
Increasing the pressure on hydrogen in a closed container
Increasing the volume of the container of hydrogen gas
Heating the container
Some hydrogen gas leaking out of container
Which one among the followings has a fixed volume but no fixed shape?
Carbon dioxide
Ice
Kerosene
Xenon
A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following is the correct arrangement?
oxygen – honey – sugar
oil – air– salt
juice – salt – oxygen
salt – air – sugar solution
Explore all questions with a free account