Questions
Study the given figure and answer the following questions.
- Which gas is being collected in the gas jar?
- Write the balanced chemical equation for the preparation of this gas.
- Which litmus is used to identify this gas?
- Why the hard glass test tube is slightly inclined?
- What is the use of the lime tower?
Describe the laboratory preparation of ammonia gas with a labelled diagram.
Write any four uses of carbon dioxide gas.
Write any three properties of carbon dioxide gas.
Study the given figure and answer the following questions:
- Which gas is being collected in the gas jar?
- Write a balanced chemical reaction for preparation of this gas.
- Which litmus paper is used to identify the gas?
- Why is this gas collected in the gas jar kept straight upright?
Describe the laboratory preparation of carbon dioxide with a labelled diagram.
The bottle of liquid ammonia should be placed in cold water or ice for some time before opening its lid.
Carbon dioxide can be collected in an open gas jar, why?
The acceleration of an object moving on the earth is inversely proportional to the mass of the object, but for an object falling towards the surface of the earth, the acceleration does not depend on the mass of the object, why?
How is it possible to have a safe landing while jumping from a flying airplane using a parachute? Is it possible to have a safe landing on the moon in the same way? Explain with reasons.