MCQ
The percentage value of nitrogen in urea is about:
- A46
- B85
- C18
- D28
✓
Answer
- 46
Explanation:
The formula of urea is NH2CONH2
WN = 28
WC = 12
WO = 16
WH = 4
In 60g urea, WN = 28g
100g urea, WN is $=\frac{28}{60}\times100=46\%$
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
When two hydrogen atoms in benzene are replaced by two similar or different monovalent atoms or groups, how many different position isomers are possible?
Which would decrease the $pH$ of $25\,c{m^3}$ of a $0.01\,M$ solution of hydrochloric acid
→Among the compound's the order of decreasing reactivity towards electrophilic substitution is
Phosphate of a metal $M$ has the formula ${M_3}{\left( {P{O_4}} \right)_2}.$ The formula for its sulphate would be
→See the following chemical reaction:
→$Cr _2 O _7^{2-}+ XH ^{+}+6 Fe ^{2+} \rightarrow YCr ^{3+}+6 Fe ^{3+}+ ZH _2 O$
The sum of $X . Y$ and $Z$ is $.......$.
Ionisation constant of $CH_3COOH$ is $1.7 \times 10^{-5}$ and concentration of $H^+$ ions is $3.4 \times 10^{-4}$. Then find out initial concentration of $CH_3COOH$ Molecules
→Which of the following compound do not release $CO_2$ on oxidative ozonolysis
→The presence of the chlorine atom on benzene ring makes the second substituent enter at a position
The first ionization potentials $\left( {eV} \right)$ of $Be$ and $B$ respectively are
→A tenfold increase in pressure on the reaction ${N_{2(g)}}$$ + 3{H_{2(g)}}$ $\rightleftharpoons$ $2N{H_{3(g)}}$ at equilibrium, makes ${K_p}$
→