Question

guys can you all plz help me with these questions? plz ❤️
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Answer 1

Answers:

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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