MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
The vapour density of CH₃OH is ............... (At. Wt. C=12, H=1, O=16)
Topic: Mole concept, gas volumes and stoichiometry
Previous-year question practice database
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(c) 16.
Explanation
Molecular mass CH₃OH = 32; vapour density = 32/2.
In words
16.
More from Mole Concept and Stoichiometry
The electronic configuration of an element is 2,8,2. The hydroxide of this element can produce ............... hydroxyl ions per molecule.2026What volume of carbon dioxide is produced at STP when 5 litres of propane is burnt completely according to the equation given below?
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O2026The relative molecular mass of a substance expressed in grams.2026The volume occupied by 8 grams of oxygen gas at STP is ............... litres. [5.6 / 8.96] [Atomic weight of O = 16]2026Equal volumes of ammonia gas and chlorine gas are kept in two different containers under the same conditions of temperature and pressure.
Find the number of molecules contained in chlorine gas when the mass of ammonia is 34 g.
[Atomic weight: Cl=35.5, H=1, N=14]2026The type of reaction that occurred is ............... . (addition / substitution)2026