The compound of copper which is used in dyeing, disinfectant and as a fungicide is

JAMB Chemistry 2024 88 views

The compound of copper which is used in dyeing, disinfectant and as a fungicide is

  1. copper (ll) hydroxide
  2. copper (ll) trioxonitrate (V)
  3. copper (ll) tetraoxosulphate (VI) ✓
  4. copper (ll) oxide

Explanation

The Islamic calendar (Hijri) has 12 lunar months: Muharram, Safar, Rabi al-Awwal, Rabi al-Thani, Jumada al-Awwal, Jumada al-Thani, Rajab, Shaban, Ramadan, Shawwal, Dhul-Qadah, Dhul-Hijjah.

Important months: Ramadan (fasting), Dhul-Hijjah (Hajj), Muharram (new year, Ashura). Four sacred months (when warfare was traditionally forbidden): Muharram, Rajab, Dhul-Qadah, Dhul-Hijjah.

Lunar months are 29-30 days, making the Islamic year about 11 days shorter than solar. This means Ramadan and Eid cycle through all seasons over time.

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