MCQ Atoms and Molecules Chapter 3 Class 9 Science Advertisement MCQ’s For All Chapters – Science Class 9th 1. Formula of magnesium chloride isMgClMgCl₂Mg₂ClMg₂Cl₃Question 1 of 152. Formula of calcium oxide isCaOCaO₂Ca₂OCa₂O₃Question 2 of 153. Formula of sodium nitrate isNaNO₃Na₂NO₃Na₂N₂O₆NaNO₂Question 3 of 154. Formula of calcium hydroxide isCaOH₂Ca(OH)₂Ca₂OHCa₂(OH)₃Question 4 of 155. Formula of aluminium oxide isAlO₂Al₂O₃AlO₃Al₃O₂Question 5 of 156. Formula of ammonium sulphate is(NH₄)SO₄(NH₄)₂SO₄NH₄SO₄NH₂SO₄Question 6 of 157. Formula of sodium carbonate isNaCO₃Na₂CO₃Na₃CO₃Na₂C₂O₃Question 7 of 158. The molecular mass of water is16 u17 u18 u20 uQuestion 8 of 159. Molecular mass of HNO₃ is60 u61 u62 u63 uQuestion 9 of 1510. Formula unit mass of NaCl is56 u57.5 u58.5 u59 uQuestion 10 of 1511. Formula unit mass of CaCl₂ is110 u111 u112 u113 uQuestion 11 of 1512. Polyatomic ions containSingle atomGroup of atoms with chargeNeutral atomsMolecules onlyQuestion 12 of 1513. Hydroxide ion symbol isHOOHOH⁻HO₂⁻Question 13 of 1514. Nitrate ion is represented asNO₂⁻NO₃⁻NO₃²⁻N₂O₃Question 14 of 1515. Carbonate ion has charge1⁺2⁺1⁻2⁻Question 15 of 15 Loading...
Nice questions,I scored 14 out of 14 Thanks.
This questions help children’s for their personal test
good questions
This resource is absolutely amazing and incredibly helpful for students!
GUD EXPLANATIONS AND QUALITY LEVEL PROVIDED BY E VIDYARTHI
T💝H🪄A💫N🙏K💥S
Good question level
I like all question all question are help full nice question
Okay
Good
This is good app