Question

A) ammeter should be connected in circuit
B) the value of bond angle in methane molecule

Answer 1

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A) An ammeter shoul be connected in the circuit because, it measures the rate of flow of current or we can say amount of current flowing in the circuit.

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B) Methane has SP3 hybridization and its geometry is tetrahedral with an angle (i.e, bond angle) of 109.5° between the bonds.
There is no change in shape as there are no lone pair electrons in methane. It means that geometry = shape in case of CH4.

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