MCQ
Biogas contains
- A$30\;\% -40\;\%$ $Methane$
- B$50\;\% -70\;\% CO_2$
- ✓$50\;\% -70\;\%$ $Methane$
- D$20\;\%$ $Methane$
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| Column $- I$ | Column $- II$ |
| $(a)$ Typhoid | $(i)$ Wuchereria |
| $(b)$ Pneumonia | $(ii)$ Plasmodium |
| $(c)$ Filariasis | $(iii)$ Salmonella |
| $(d)$ Malaria | $(iv)$ Haemophilus |
$(a)\quad(b)\quad(c)\quad(d)$

$R$ : $DNA$ fragments are negatively charged molecules.
Statement $I$: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid.
Statement $II$: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome.
In the light of the above statements, choose the correct answer from the options given below: