MCQ
In a compound, C-40% and H-6.66% are present, what is the empirical formula of the compound:
- ✓CH2O
- BC4HO4
- CCHO
- DCH2O2
✓
Answer
Correct option: A.
CH2O
(A) CH2O
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
Which electron transition in a hydrogen atom requires the largest amount of energy :
Which of the following pyrimidine base present in $RNA $ ?
→Any precipitate is formed when
The correct order of boiling point is
Product $(B)$ of this reaction is
→In the following sets of reactants which two sets best exhibit the amphoteric characters of $Al_2O_3. xH_2O$ ?
→Set $1$: $Al_2O_3 .xH_2O\, (s)$ and $OH^-(aq)$
Set $2$: $Al_2O_3 .xH_2O\, (s)$ and $H_2O\,(l)$
Set $3$: $Al_2O_3 .xH_2O\, (s)$ and $H^+(aq)$
Set $4$: $Al_2O_3 .xH_2O\, (s)$ and $NH_3(aq)$
At higher altitude, boiling point of water is $95\,^oC$ . The amount of $NaCl$ added to $1\,\,kg$ water $(K_b = 0.52\,\,Km^{-1})$ in order to raise the boiling point of solution to $100\,^oC$ (assume $90\%$ ionisation of $NaCl$ ) .......... $g$.
→Consider the following single step reaction in gas phase at constant temperature.
→$2 \mathrm{~A}_{(\mathrm{g})}+\mathrm{B}_{(\mathrm{g})} \rightarrow \mathrm{C}_{(\mathrm{g})}$
The initial rate of the reaction is recorded as $r_1$ when the reaction starts with $1.5 \mathrm{~atm}$ pressure of $\mathrm{A}$ and $0.7 \mathrm{~atm}$ pressure of B. After some time, the rate $r_2$ is recorded when the pressure of $C$ becomes $0.5 \mathrm{~atm}$. The ratio $r_1: r_2$ is $\qquad$ $\times 10^{-1}$.
(Nearest integer)
The compound $HCl$ behaves as …. in the reaction, $HCl + HF \to H_2^ + Cl + {F^ - }$
→Would gaseous $ HCl$ be considered as an Arrhenius acid
→