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CBSE CLASS 9 - Atoms and Molecules -MCQ test

Atom and Molecules
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Kerala PSC

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  • The atomicity of KMnO4 is - 6
  • What is the formula of QuickTime? - CaO
  • What is chemical symbol of Mercury? - Hg
  • The noble gas molecule is ...... - monoatomic
  • What is the valency of N in NH3? - 3
  • What is the no. of mole present in 28g of Nitrogen? - 2
  • What is cation? - +ve ions
  • What is the name of Al2(SO4)3? - aluminium sulphate
  • What is chemical formula of (Fe )3+ and (SO4) 2-? - Fe2(SO4)3
  • What is valency of NH4 in (NH4)2CO3? - 1
  • What is the valancy of zinc (Zn)? - 2
  • What is the valency of Potassium (K)? - 1
  • What is the valency of Sodium (Na)? - 1
  • What is the valency of Copper (Cu)? - 1, 2
  • What is the valency of Iron (Fe)? - 2, 3
  • What is the valency of Magnesium (Mg)? - 2
  • What is the valency of Calcium (Ca)? - 2
  • What is the valency of Sodium (Na)? - 1
  • What is the valency of Aluminium (Al)? - 3
  • What is the valency of Silver (Ag)? - 1
  • What is the valency of Gold (Au)? - 1
  • What is the valency of polyatomic ion SO4? - -2
  • What is the valency of polyatomic ion Carbonate (CO3)? - -2
  • What is the valency of polyatomic ion Nitrate (NO3)? - 1
  • What is the valency of polyatomic ion bicarbonate (HCO3)? - -1
  • What is the valency of polyatomic ion bisulphate (HSO4)? - -1
  • What is the valency of Chloride (Cl)? - -1
  • What is the valency of Iodide (I)? - -1
  • What is the valency of Bromide (Br)? - -1
  • What is the valency of polyatomic ion Chromate (CrO4)? - -2
  • What is the valency of polyatomic ion Permanganate (MnO4)? - 1
  • What is the valency of polyatomic ion hydroxide (OH)? - -1
  • What is the valency of polyatomic ion dichromate (Cr2O7)? - -2
  • What is the valency of polyatomic ion cyanide (CN)? - -1
  • What is the valency of polyatomic ion peroxide (O2)? - -2


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