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@ElevateTutor_bot
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🫧 "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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@ElevateTutor_bot
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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