Bulk of carbon dioxide released from body tissues into the blood is present as

bicarbonate in blood plasma and RBCs

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{C O}_{2}

in blood plasma

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70% carbamino-haemoglobin and 30% as bicarbonate

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carbamino-haemoglobin in RBCs

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Solution

The correct option is A bicarbonate in blood plasma and RBCs
Nearly 70% of carbon dioxide is carried by the blood as bicarbonate, 20-25% as bound to RBCs, and around 7% in a dissolved state through plasma.

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(C O_{2})

Bulk of carbon dioxide $(C O_{2})$ released from body tissues into the blood is present as

C O_{2}

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