MCQ
Which has minimum number of atoms of oxygen?
- A$10\, ml\, H_2O(l)$
- B$0.1\, mol$ of $V_2O_5(s)$
- C$12\, gm\, O_3(g)$
- ✓$12.04\times10^{22}$ molecules of $CO_2$
✓
Answer
Correct option: D.
$12.04\times10^{22}$ molecules of $CO_2$
d
$1$ molecule of $\mathrm{CO}_{2}$ contains $2$ atoms $12.04 \times 10^{22}$ molecule contain
$1$ molecule of $\mathrm{CO}_{2}$ contains $2$ atoms $12.04 \times 10^{22}$ molecule contain
${=12.04 \times 10^{22} \times 2} $
${=24.08 \times 10^{22} \text { atoms of oxygen }}$
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
Note: Consider the following four compounds for answering questions:
→$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{C}-\text{H}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\\text{CH}_3-\text{CH}_2-\text{CH}_2\text{CH}_2-\text{C}-\text{CH}_3$
$\text{CH}_3-\text{CH}_2-\text{C}-\text{CH}_2-\text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}$
$\text{CH}_3-\text{CH}-\text{CH}_2-\text{C}-\text{H}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\ \ \ \ \ \ \ \ \ \ \ ||\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\ \ \ \ \ \text{O}$
Which of the following pairs are position isomers?
$KMn{O_4}$ reacts with oxalic acid according to the equation, $2MnO_4^ - + 5{C_2}O_4^{2 - } + 16{H^ + } \to 2M{n^{2 + }} + 10C{O_2} + 8{H_2}O$, here $20\, ml$ of $ 0.1\, M$ $KMn{O_4}$ is equivalent to
→Ethyl acetoacetate shows, which type of isomerism
The reaction in which the hybridisation of the underlined atom is affected is
The pH of neutral water at 25°C is 7.0. As the temperature increases, ionisation of water increases, however, the concentration of H+ ions and OH– ions are equal. What will be the pH of pure water at 60°C?
According to Bronsted-Lowry concept, base is a substance which is
Assign $A, B, C, D$ from given type of reaction.
$Pb{\left( {N{O_3}} \right)_2}\xrightarrow{\Delta }PbO + N{O_2} + {O_2}$
→The percentage composition of carbon by mole in methane is ........... $\%$
→A monoprotic acid in $ 1.00 \,M $ solution is $ 0.01\%$ ionised. The dissociation constant of this acid is
→Correct order of rate of $EAS$ (electrophilic aromatic substitution) is
→