MCQ practice · SSC Chemistry Board questions · Chapter 6
SSC Chemistry Chapter 6.
Concept of Mole and Chemical Counting
86 questions · Board questions
- If the actual mass of one atom of an element is 3.16 × 10⁻²³ g, what is its relative atomic mass?Barishal Board 2021
- What is the relative atomic mass of 'F'?Chattogram Board 2021
- How many Ca²⁺ ions are there in 2 moles of Ca²⁺ ions?Chattogram Board 2022
- What is the actual mass of one fluorine atom?Chattogram Board 2022
- What is the mass in grams of one Al atom?Chattogram Board 2025
- What is the relative molecular mass of H₃PO₄?Cumilla Board 2021
- What is the relative molecular mass of the compound calcium phosphate?Cumilla Board 2022
- What is the relative atomic mass of Al?Dhaka Board 2021
- Which has the highest relative molecular mass?Dhaka Board 2021
- How many molecules are present in 5 g of CaCO₃?Dhaka Board 2022
- How many moles of water are there in 27 g of water?Dhaka Board 2024
- How many molecules are there in 1 g of the salt KCl?Dinajpur Board 2022
- How many molecules are in the H₂ gas used in the stimulus?Dinajpur Board 2022
- How many atoms are in 12 g of carbon?Dinajpur Board 2023
- The mass of one atom of an element is 4.482 × 10⁻²³ g. What is its relative atomic mass?Jashore Board 2021
- 0.5 mol of oxygen equals how many grams?Jashore Board 2023
- 'X' is an element one atom of which has a mass of 3.985 × 10⁻²³ g. The relative atomic mass of 'X' is:Rajshahi Board 2021
- If one atom of an element has a mass of 3.154 × 10⁻²³ g, what is the element's relative atomic mass?Sylhet Board 2021
- What is the mass of 4 Mg atoms?Sylhet Board 2022
- What is the volume of 10 g of helium gas at the standard condition?Chattogram Board 2022
- What is the volume in liters of 5 grams of hydrogen gas at the standard condition?Cumilla Board 2023
- What is the volume of 5 mole CO₂ gas at the standard condition?Cumilla Board 2025
- What is the volume of 60 g of SO₂ at standard temperature and pressure?Jashore Board 2022
- What is the volume of 14 grams of carbon monoxide at standard temperature and pressure?Sylhet Board 2023
- How many hydrogen atoms are there in 1 mole of water molecules?Barishal Board 2024
- How many atoms are there in one molecule of calcium phosphate?Cumilla Board 2023
- The molecular formula H₃PO₄:Dhaka Board 2022
- How many atoms are there in one molecule of blue vitriol?Dinajpur Board 2021
- How much solute is needed to make 100 mL of decimolar caustic soda solution?Barishal Board 2024
- How much NaHCO₃ is dissolved in 2 liters of 0.1 M NaHCO₃ solution?Chattogram Board 2022
- If 5 g of NaOH is dissolved in 100 mL of solution, what is its concentration?Chattogram Board 2023 · Barishal Board 2025
- How many grams of solute are in 1 liter of decimolar H₂SO₄ solution?Chattogram Board 2023
- How much NaOH is in the solution of the stimulus?Chattogram Board 2024
- If 20 g of NaOH is dissolved in 0.5 liter of solution, what is the concentration of that solution?Chattogram Board 2025
- How many grams of sodium hydroxide must be dissolved in 200 mL of solution for it to be semimolar?Cumilla Board 2022
- What is the concentration of the solution?Cumilla Board 2023
- What is the molarity of the solution?Cumilla Board 2024
- How many more grams of salt must be added to the solution to make it semimolar?Cumilla Board 2024
- What is the molarity of the solution in vessel A?Cumilla Board 2025
- If 1000 mL of solution holds 117 g of NaCl, what is its molarity?Dhaka Board 2022
- If 10 g of Na₂CO₃ is dissolved in a 0.75 molar Na₂CO₃ solution, what is the volume of that solution?Dhaka Board 2025
- A decimolar solution means a solution of what molarity?Dinajpur Board 2022
- What is the mass of solute in a semimolar solution of 'sodium carbonate'?Dinajpur Board 2023
- The conditions of molarity are:Dinajpur Board 2023
- How much Na₂CO₃ is in 2 liters of 0.2 molar Na₂CO₃ solution?Jashore Board 2022
- How many grams of solute are in 750 mL of 0.1 M sodium carbonate solution?Jashore Board 2024
- What is the molarity of the solution?Rajshahi Board 2022
- How much solute is in 1.5 liters of 0.5 molar sodium hydrogen carbonate solution?Rajshahi Board 2023
- How many solute molecules are in the solution?Rajshahi Board 2025
- How many grams of NaCl are dissolved in the solution of B?Sylhet Board 2022
- What is the concentration of a molar solution?Sylhet Board 2022
- If 24.5 g of H₂SO₄ is dissolved in 1 liter of solution, what is its molarity?Sylhet Board 2023
- What is the molarity of that solution?Sylhet Board 2025
- What is the percentage composition of S in the compound Al₂(SO₄)₃?Jashore Board 2022
- Which is the empirical formula of the oxide in the stimulus?Barishal Board 2022
- If the ratio of H, C and O atoms is 1 : 1 : 2 and the molecular mass is 90, which is the compound's molecular formula?Barishal Board 2024
- Which is the empirical formula of glucose?Chattogram Board 2025
- If a compound's empirical formula is CH₂O and its actual molecular mass is 180, which is its molecular formula?Jashore Board 2022
- If a hydrocarbon is 85.71% carbon, which is its empirical formula?Rajshahi Board 2022
- Which has the same empirical and molecular formula?Sylhet Board 2022
- How much gas forms when 50 g of CaCO₃ is heated?Barishal Board 2025
- The branch of chemistry in which the amounts of reactants and products are calculated is:Chattogram Board 2022
- How many liters of the gas form at the standard condition?Chattogram Board 2023
- How many atoms are in the compound 'X' formed in the reaction of the stimulus?Chattogram Board 2023
- How many moles of HCl are needed to fully neutralise 2 moles of Al₂O₃?Chattogram Board 2024
- 5 grams of CaCO₃:Cumilla Board 2023
- 10 g of calcium completes its reaction with how many grams of oxygen?Dhaka Board 2024
- How many grams of A form from 20 grams of Ca?Dhaka Board 2025
- How much O₂ is needed to produce 56 g of compound Y?Dinajpur Board 2022
- How much Mg is needed to get 5 moles of MgO?Dinajpur Board 2023
- How much oxygen is needed to burn 10 g of Mg completely?Dinajpur Board 2023
- From 5 g of CaCO₃:Jashore Board 2025
- If enough dilute HCl is passed into the solution of the stimulus:Rajshahi Board 2025
- What is the mass ratio of oxygen to hydrogen in the reactants?Sylhet Board 2024
- How many grams of hydrogen are needed to get 72 g of water in the reaction?Sylhet Board 2024
- 24 g of Mg reacts with how many grams of O₂?Sylhet Board 2024
- How many grams of NH₃ will form in the stimulus reaction?Barishal Board 2022
- How many moles of HCl are mentioned in the stimulus?Chattogram Board 2023
- For the reaction in the stimulus:Chattogram Board 2023
- What is the volume at the standard condition of the H₂ gas that reacted?Cumilla Board 2022
- To convert the reactants completely into product, what must be added?Cumilla Board 2022
- After the reaction, which reactant is left over, and how much?Dinajpur Board 2022
- How much product forms in the reaction Ca (10 g) + S (10 g) = CaS?Sylhet Board 2023
- What is the percentage of yield of the product (MgO)?Dinajpur Board 2025
- Heating 100 g of magnesium carbonate gives 45 g of magnesium oxide. What is the percentage of yield?Rajshahi Board 2023
- Heating 50 g of PCl₅ gave 31 g of PCl₃. What is the percentage of yield?Rajshahi Board 2025