Idiom
Blood is red in colour due to the presence of ________

Hemocyanin
Chlorophyll
Cytochrome
Haemoglobin

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Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. To cast pearls before a swine

To spend recklessly
To waste money over trifles
To offer a person a thing which he cannot appreciate
To spend a lot of money on the unkeep of domestic hogs

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