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Answered on 13 Apr Learn NCERT Solutions
Sadika
Physical properties of carbon compounds or covalent compounds: Some physical properties of carbon compounds or covalent compounds include:
Answered on 13 Apr Learn NCERT Solutions
Sadika
Answered on 13 Apr Learn NCERT Solutions
Sadika
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Answered on 13 Apr Learn Metals and Non Metals
Sadika
Cinnabar and Extraction of Metal:
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Answered on 13 Apr Learn Metals and Non Metals
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Identification of Metal A and Amphoteric Oxide B:
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Answered on 13 Apr Learn Acids, Bases and Salts
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A milkman adds a small amount of baking soda to fresh milk to shift the pH of fresh milk from 6 to slightly alkaline because alkaline conditions inhibit the growth of bacteria and help to preserve the freshness of milk. Baking soda (sodium bicarbonate) acts as a buffer, helping to maintain the pH of milk and prolong its shelf life.
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Answered on 13 Apr Learn Acids, Bases and Salts
Sadika
Acids do not show acidic behavior in the absence of water because the characteristic properties of acids, such as the donation of hydrogen ions (H+) and the ability to react with bases, depend on the presence of water molecules to facilitate proton transfer reactions. In the absence of water, acids cannot ionize and exhibit their acidic properties.
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Answered on 13 Apr Learn Acids, Bases and Salts
Sadika
Rainwater conducts electricity because it contains dissolved ions and gases from the atmosphere, such as carbon dioxide (CO2), oxygen (O2), and nitrogen oxides (NOx), which act as electrolytes and facilitate the flow of electric current. Distilled water, on the other hand, does not conduct electricity because it lacks dissolved ions and gases, making it a poor conductor of electricity.
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Answered on 13 Apr Learn Periodic classification of elements
Sadika
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Answered on 13 Apr Learn Periodic classification of elements
Sadika
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