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Question
The gas released from vehicles exhaust are
- carbon monoxide
- Sulphur dioxide
- Oxides of nitrogen
Options
i and ii
i and iii
ii and iii
i, ii and iii
Solution
i, ii and iii
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Biogas is a better fuel than animal dung cake because:
(i) Biogas has a lower calorific value.
(ii) Animal dung cake has a higher calorific value.
(iii) Biogas has a high heating capacity.
(iv) Biogas burns without smoke.
Choose the incorrect statement
