Basic General Knowledge
Which of the following are the member countries of the commonwealth?

Nigeria, Pakistan, India, Jamaica and Singapore
All of these
Australia, Tonga, UK and Zimbabwe
Mauritius, Maldives, Ghana, Bangladesh

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Basic General Knowledge
The exhaled air contains

a mixture of carbon dioxide, nitrogen and oxygen in which nitrogen has the highest percentage
carbon dioxide only
a mixture of carbon dioxide and nitrogen
a mixture which has more carbon dioxide than oxygen

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