MCQ
Gobar gas contains mainly
- ✓$CH _{4} \wedge CO _{2}$
- B$CH _{4} \wedge O _{2}$
- C$CH _{4} \wedge H _{2}$
- D$CH _{4} \wedge SO _{2}$
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$(i)$ Avoid sex with unknown partners
$(ii)$ Use condoms during coitus
$(iii)$ Blood transfusion
$(iv)$ All of these