MCQ
The correct formula showing the relation between vapour density and molecular weight:
- AMolecular weight = 2/ vapour density
- BMolecular weight $=2 \times$ vapour density
- CMolecular weight × 2 = Vapour density
- DNone of these
✓
Answer
B.Molecular weight = 2 × vapour density
Explanation: A molecular mass is the sum of the mass of all the atoms in a molecule. Whereas, vapour density is the density of vapour in relation to the density of vapour of hydrogen. The relation between molecular mass and vapour density is:
Molecular mass = 2 × vapour density
Explanation: A molecular mass is the sum of the mass of all the atoms in a molecule. Whereas, vapour density is the density of vapour in relation to the density of vapour of hydrogen. The relation between molecular mass and vapour density is:
Molecular mass = 2 × vapour density
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Study the given figure and answer the question that follow:
Write the equation representing the reaction that occurs.
Write the equation representing the reaction that occurs.
Naphthalene contains $93.75 \% C$ and the rest hydrogen. Molecular mass of naphthalene is 128 . Find its empirical formula.
→How many of the following compounds will give black spongy mass on reaction with concentrated sulphuric acid?
Glucose, cellulose, table salt, cane sugar, baking soda, fructose, starch, DNA
Glucose, cellulose, table salt, cane sugar, baking soda, fructose, starch, DNA
Copper, Zinc and Tin are the metals alloyed to form.
A gas cylinder of capacity of $20dm^3$ is filled with gas $X$ the mass of which is $10g.$ When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is $2g,$ hence the relative molecular mass of the gas is :
→Choose the correct alternative :
The gas laws which relates the volume of a gas to the number of molecules of the gas is :
The gas laws which relates the volume of a gas to the number of molecules of the gas is :
During conversion of $SO _2$ to $SO _3$ the reaction is favoured at _______ temperature
→When ammonia gas is passed through lead nitrate solution, the colour of precipitate is :
The ratio between the number of molecules in $2g$ of hydrogen and $32 g$ of oxygen is $[$Given that $H=1,O=16]$
→When sodium carbonate solution is added to limewater, the colour of ppt is: