MCQ
Biogas is a mixture of inflammable gases like
- ✓Methane, $CO _{2}, H _{2}$ and $H _{2} S$
- BMethane, $CO , H _{2}$ and $N_{2}$
- C$CO _{2}, H _{2}$ and $H _{2} S$
- D$CO,$ Methane and $N_{2}$
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$(a)$ Spermatogonia
$(b)$ Secondary spermatocyte
$(c)$ Primary spermatocyte
$(d)$ Spermatid