🫧 "Names and Formulas of Chemical Elements!"
@bluenileacademy

🔺 Common salt = NaCl
🔺Baking soda = NaHCO₃
🔺 Washing soda = Na₂CO₃ 10H₂O
🔺Caustic Soda = NaOH
🔺Suhaga = Na₂B₄O₇ 10H₂O
🔺 Alum = K₂SO₄ Al₂(SO₄)₃ 24H₂O
🔺Red medicine = KMnO₄
🔺 Caustic Potash = KOH
Saltpeter = KNO₃
🔺Bleaching powder = Ca(OCl)Cl
🔺 lime water = Ca(OH)₂
🔺Gypsum = CaSO₄ 2H₂O
🔺 Plaster of Paris = CaSO₄ ½H₂O
🔺Chalk = CaCO₃
Limestone = CaCO₃
🔺 Marble = CaCO₃
Nausadar = NH4Cl
Laughing gas = N₂O
🔺 Litharge = PbO
🔺 Galena = PbS
🔺Red vermilion = Pb₃O₄
🔺White lead = 2PbCO₃ Pb(OH)₂
🔺 Salt acid = HCl
🔺Shore's acid = HNO₃
🔺Amalraj = HNO₃ + HCl (1 : 3)
🔺Dry ice = CO₂
🔺Green Case = FeSO₄ 7H₂O
🔺 Horn Silver = AgCl
🔺 Heavy water = D₂O
🔺Producer gas = CO + N₂
🔺Marsh gas = CH₄
Vinegar = CH₃COOH
🔺Gemaxine = C₆H₆Cl₆
🔺Blue Case = CuSO₄ 5H₂O
🔺alcohol = C₂H₅OH
🔺 Mand = C₆H₁₀O₅
🔺Grape juice = C₆H₁₂O₆
🔺sugar = C₁₂H₂₂O₁₁
🔺 Urea = NH₂CONH₂
🔺 Benzene = C₆H₆
━━━━━━━━━━━━━
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REGISTER AND LEARN 📌

@ElevateTutor_bot
@ElevateTutor_bot
@ElevateTutor_bot
@ElevateTutor_bot
@ElevateTutor_bot

1. Which of the following is a rational number?
a) √2
b) π
c) 3/4
d) √7

The decimal representation of 7/11 is:
a) Terminating
b) Non-terminating and repeating
c) Non-terminating and non-repeating
d) None of the above

@elevate_group

The greatest common factor (GCF) of 12 and 18 is:
a) 2
b) 3
c) 6
d) 12

The least common multiple (LCM) of 4 and 6 is:
a) 2
b) 6
c) 12
d) 24

1. Which of the following ancient civilizations is NOT directly associated with the history of Ethiopia?

a) Axum
b) Kush
c) Egypt
d) Maya

3. The Queen of Sheba, a figure in the Bible and Ethiopian legend, is believed to have ruled which ancient kingdom?

a) Axum
b) Saba
c) Dʿmt
d) Kush

What is the distance between the points (2, 3) and (5, 7)?

a) 5
b) 7
c) √29
d) √34

What is the midpoint of the line segment joining the points (1, 4) and (7, 2)?

a) (4, 3)
b) (3, 4)
c) (2, 6)
d) (6, 2)