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Carbon dioxide can be collected in an open gas jar, why?
The bottle of liquid ammonia should be placed in cold water or ice for some time before opening its lid.
Describe the laboratory preparation of carbon dioxide with a labelled diagram.
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?
Write any three properties of carbon dioxide gas.
Write any four uses of carbon dioxide gas.
Describe the laboratory preparation of ammonia gas with a labelled diagram.
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?
Write any four uses of ammonia gas.
What happens in the following processes? Write with a balanced chemical reaction.
- Carbon dioxide is passed through lime water for some time.
- Carbon dioxide is passed through lime water for a long time.
- A burning magnesium is inserted into the jar full of carbon dioxide gas.
What happens in the following processes? Write with a balanced chemical reaction.
- The mixture of ammonium chloride and calcium hydroxide is heated.
- Ammonia is mixed with water.
- Ammonia reacts with hydrochloric acid.
What products are formed on heating of limestone to a high temperature using coal?
Which of the following statements is true?
Which compounds are formed when carbon dioxide gas is passed through lime water for some time?
In what ratio should ammonium chlroide and calcium hydroxide be mixed for the laboratory preparation of ammonia gas?
What is upward displacement of air?
What is downward displacement of air?
Write down the molecular formula and molecular weight of carbon dioxide.
Where is carbon dioxide found in nature?
What happens when carbon dioxide gas is cooled at -78$^o$C?
Write any two physical properties of carbon dioxide gas.
Write any two chemical properties of carbon dioxide gas.
Write down the molecular formula and molecular weight of ammonia.
Write any two physical properties of ammonia gas.
Name any two chemicals which are required to prepare carbon dioxide gas in laboratory.
What is dry ice?
Which gas is obtained by reacting slaked lime and ammonium chloride?
What is Haber's process?
What will happen when lime water reacts with carbon dioxide? Write a balanced chemical equation.
A colorless and odorless water-soluble gas reacts with ammonia at high temperatures to form a nitrogen fertilizer, i.e., urea. Suggest two other applications of the same gas. Also, draw a well-labelled diagram to demonstrate the laboratory preparation of that gas.
Why do moist red litmus paper change into blue when it is inserted into the jar containing ammonia?
A student used powder of calcium carbonate rather than marble pieces for the laboratory preparation of CO$\rm _2$ gas.
- Write a balanced chemical equation for the chemical reaction mentioned above.
- Why did he/she use powder of marble instead of marble chips?
When a burning ribbon of a metal was taken in a jar containing gas, it formed white and black powder. The white powder can be used as medicine to cure hyperacidity.
- What happens when the white substance is dissolved in water? Write only balanced chemical equation.
- How does the solution help to reduce the hyperacidity of stomach?
Why is ammonia gas passed into lime tower before collection in gas jar?
What happens when carbon dioxide reacts with water? Also, write balanced chemical equation.
What is the odour of ammonia gas?
Why is carbon dioxide gas considered as acidic gas?
Clarify the cause of selecting dil. HCl instead of dil. H$_2$SO$_4$ during laboratory preparation of carbon dioxide. What tests do you need to perform before entering into well to prevent from the suffocation?
Write the name of the compound formed when ammonia dissolves in water.
Carbon dioxide can be collected in an open gas jar, why?
The bottle of liquid ammonia should be placed in cold water or ice for some time before opening its lid.
Describe the laboratory preparation of carbon dioxide with a labelled diagram.
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?
Write any three properties of carbon dioxide gas.
Write any four uses of carbon dioxide gas.
Describe the laboratory preparation of ammonia gas with a labelled diagram.
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?
Write any four uses of ammonia gas.
What happens in the following processes? Write with a balanced chemical reaction.
- Carbon dioxide is passed through lime water for some time.
- Carbon dioxide is passed through lime water for a long time.
- A burning magnesium is inserted into the jar full of carbon dioxide gas.
What happens in the following processes? Write with a balanced chemical reaction.
- The mixture of ammonium chloride and calcium hydroxide is heated.
- Ammonia is mixed with water.
- Ammonia reacts with hydrochloric acid.
What products are formed on heating of limestone to a high temperature using coal?
Which of the following statements is true?
Which compounds are formed when carbon dioxide gas is passed through lime water for some time?
In what ratio should ammonium chlroide and calcium hydroxide be mixed for the laboratory preparation of ammonia gas?
What is upward displacement of air?
What is downward displacement of air?
Write down the molecular formula and molecular weight of carbon dioxide.
Where is carbon dioxide found in nature?
What happens when carbon dioxide gas is cooled at -78$^o$C?
Write any two physical properties of carbon dioxide gas.
Write any two chemical properties of carbon dioxide gas.
Write down the molecular formula and molecular weight of ammonia.
Write any two physical properties of ammonia gas.
Name any two chemicals which are required to prepare carbon dioxide gas in laboratory.
What is dry ice?
Which gas is obtained by reacting slaked lime and ammonium chloride?
What is Haber's process?
What will happen when lime water reacts with carbon dioxide? Write a balanced chemical equation.
A colorless and odorless water-soluble gas reacts with ammonia at high temperatures to form a nitrogen fertilizer, i.e., urea. Suggest two other applications of the same gas. Also, draw a well-labelled diagram to demonstrate the laboratory preparation of that gas.
Why do moist red litmus paper change into blue when it is inserted into the jar containing ammonia?
A student used powder of calcium carbonate rather than marble pieces for the laboratory preparation of CO$\rm _2$ gas.
- Write a balanced chemical equation for the chemical reaction mentioned above.
- Why did he/she use powder of marble instead of marble chips?
When a burning ribbon of a metal was taken in a jar containing gas, it formed white and black powder. The white powder can be used as medicine to cure hyperacidity.
- What happens when the white substance is dissolved in water? Write only balanced chemical equation.
- How does the solution help to reduce the hyperacidity of stomach?
Why is ammonia gas passed into lime tower before collection in gas jar?
What happens when carbon dioxide reacts with water? Also, write balanced chemical equation.
What is the odour of ammonia gas?
Why is carbon dioxide gas considered as acidic gas?
Clarify the cause of selecting dil. HCl instead of dil. H$_2$SO$_4$ during laboratory preparation of carbon dioxide. What tests do you need to perform before entering into well to prevent from the suffocation?
Write the name of the compound formed when ammonia dissolves in water.