PDF chapter test TRY NOW
Fill in the blanks:
1. This as the property to hold water and makes the soil fertile. Vermicomposting is the process that helps in converting organic waste materials into __________ with the help of worms.
2. __________ are obtained from naturally available materials. They have chemicals present in them which helps in colour change on reaction with acid and base. These are used to check the reaction completion.
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