guys can you all plz help me with these questions? plz ❤️
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➊) Mg + O₂ ➞ MgO, is an example of combination reaction.
➋) Molecular formula of ethane is C₂H₆, it contains 7 covalent bonds.
➌) Pyruvate coverts into carbon dioxide, water and energy in mitochondria.
➍) Methane is the main constitution of biogas.
➎) 5 cm focal length convex lens is used to read small letters in dictionary.
➏) In dispersion phenomena light splits into seven colours.
➐) Butanone contains ketone friction group.
➑) Chloride of element X is XCL₂, X is solid having high melting point and boiling point likely to be Mg.
➒) Watermelon is unisexual flower.
➓) Clay is not used to make lens.
⓫) Coal is not an example of biomass.
⓬) Kidney is associated with excretion.
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