MCQ
The value of 1 amu is equal to:
- A1.66 × 10−8g
- B1.66 × 10−4g
- C1.66 × 10−16g
- D1.66 × 10−24g
✓
Answer
- 1.66 × 10−24g
Explanation:
One an amu is $\frac{1}{2}$ of the mass of one carbon-12 atom.
It is equal to $\frac{1}{\text{N}_\text{A}}$
$\frac{1}{6.022\times10^{23}}=1.66\times10^{-24}\text{g}$
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
$\,$
→In which of the following, all atoms are coplanar?
The heat of combustion of carbon to $CO_2$ is $ -393.5\ kJ/mol.$ The heat released upon formation of $35.2\ g$ of $CO_2$ from carbon and oxygen gas is
→Which is correct configuration of the given compound ?
Chemical behaviour of an atom is determined by
What are A and B in following reaction? $ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{H}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{H}_2\text{C}-\text{C}-\text{H}+\text{KOH}\xrightarrow{\text{Alcohol}}\text{A}\xrightarrow{\text{NaNH}_2}\text{B}\\ \ \ \ \ \ \ | \ \ \ \ \ \ |\\ \ \ \ \ \ \text{Br} \ \ \ \text{Br}$
→| | A | B |
| (a) | $\text{H}_2\text{C}=\text{CH}_2$ | $\text{CH}\equiv\text{CH}$ |
| (b) | $\text{CH}_2=\text{CHBr}$ | $\text{CH}\equiv\text{CH}$ |
| (c) | $\text{CH}_2=\text{CHBr}$ | $\text{CH}_2=\text{CH}_2$ |
| (d) | $\text{CH}_2=\text{CH}_2$ | $\text{CH}\equiv\text{CBr}$ |
Oxidation number of $P$ in $K{H_2}P{O_2}$ is
→Increasing order of stability of the resonance structure is:
An organic compound is estimated through Dumus method and was found to evolve $6\,mole$ of $CO_2\,\,4\,moles$ of $H_2O$ and $1\,mole$ of nitrogen gas. The formula of the compound is
→In the metallurgy of aluminium, cryolite is mixed in the molten state because it