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CBSE Class 10 Answered

some help pls?
Asked by SaiParvathi | 01 Sep, 2008, 07:04: PM
Expert Answer

yes, we can use crystaline sodium carbonate for ant sting .

Answered by | 27 Sep, 2008, 11:25: AM
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CBSE 10 - Chemistry
1.A farmer has grown the petunia flowers on his field. He observed that the colour of the flowers started changing from blue to reddish purple. • What could be the possible reason for the change in colour? ⚫ What role is played by petunia flowers? • Suggest any two substances playing the same role in the field of agriculture. • What should be added by the farmer to treat the soil? What type of reaction will take place during treatment of soil? 2. A metal X reacts with HCI to liberate gas A but its compound Y releases gas B with HCI along with the salt CaCl,. Name the metal X. • Identify gas A and how will you test for it? ⚫ Name the salt Y and give its molecular formula. • Identify gas B and how will you test for it? What type of reaction takes place when X reacts with HCI? 3. A sodium salt 'A' is used while baking a cake. It makes the cake fluffy and spongy due to the release of gas 'B'. Identify salt 'A'. ⚫ What is the common name of this salt? ⚫ Which gas is released during the process? • How will you test for gas 'B'? 4. Anita's mother asked her to store the pickle in some bowl. She kept the pickle in a brass bowl. Was she right in doing that? Why or why not?
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CBSE 10 - Chemistry
reaction of metallic oxides with acids
Asked by manisha.5154 | 15 Jun, 2022, 02:52: PM
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CBSE 10 - Chemistry
what precautions will take in experiment diluting acid
Asked by ranishoba947 | 10 May, 2022, 09:04: PM
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CBSE 10 - Chemistry
What will react with baking soda to release carbon dioxide gas a) Nitric acid b) Sodium hydroxide c) Calcium oxide d) Carbon Dioxide
Asked by chetnasachdeva.sachdeva2006 | 25 Nov, 2021, 05:26: PM
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CBSE 10 - Chemistry
GIVE THE PH RANGE BY WHICH WE CAN CHARACTERISE AN ACID OR A BASE TO BE STRONG OR WEAK, RESPOND SOON PLEASE.
Asked by Trisha Gupta | 23 Nov, 2021, 02:45: AM
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CBSE 10 - Chemistry
PLS GIVE LIST OF WHAT COLOR NATURAL INDICATORS: RED CABBAGE LEAVES, COLORED PETALS OF GERANIUM, PETUNIA AND HYDRANGEA GIVE IN ACIDIC AND BASIC MEDIUM
Asked by Trisha Gupta | 23 Nov, 2021, 02:40: AM
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CBSE 10 - Chemistry
pls can you give a list of some common compounds important from exam point of view - acids and bases in that pls mention what pH they have and what color they show on the ph paper when tested
Asked by Trisha Gupta | 23 Nov, 2021, 02:28: AM
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CBSE 10 - Chemistry
give a way to predict the parent acid and parent base of any salt, respond soon,
Asked by Trisha Gupta | 23 Nov, 2021, 12:29: AM
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CBSE 10 - Chemistry
Is potassium iodide aqueous
Asked by anshika.dubey9809 | 11 Nov, 2021, 07:42: PM
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CBSE 10 - Chemistry
Find the chemical compounds used in your bath soap and detergent? What are the chemicals used and their usage and side effects? Why the detergent is not being used to cleanse our body? Answer soon
Asked by Trisha Gupta | 23 Sep, 2021, 06:56: AM
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