bsc 1st year chemistry book pdf download

Potato dextrose media

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Potato dextrose media i.e PDA is used for the cultivation of fungi. Potato dextrose is a general media.which is recommended for plate count methods for foods. It encourages mold sporulation and pigment   production in dermatophytes. Agar is used as solidifying agents. Procedure 1. Boil 200g sliced, unpeeled potatoes in 1 litre distilled water for 30 … Read more

Chemistry Notes For Bsc 1st year

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Alkenes are unsaturated hydrocarbons containing a double bond between two carbons. The carbon atom in the alkene is sp2 hybridized. the percentage of s character is less than that of the p character. The characteristic reaction of alkene is the electrophilic addition reaction. Alkene shows cis and trans isomerism.if you want to learn more with … Read more