MCQ
In organic compounds, nitrogen is tested in Lassaigne's test as
- A$NaN{H_2}$
- ✓$NaCN$
- C$NaN{O_2}$
- D$NaN{O_3}$
✓
Answer
Correct option: B.
$NaCN$
b
It’s obvious.
It’s obvious.
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
The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is :
$CH_3CH_2COOH, CH_3COOH, CH_3CH_2CH_2COOH, HCOOH$
→$CH_3CH_2COOH, CH_3COOH, CH_3CH_2CH_2COOH, HCOOH$
Which of the following has the highest mass
$X$ is
→Among the following, the aromatic compounds are
→${Image}$ Choose the correct answer from the following options
Match List - $I$ with List - $II$.
→| List - $I$ | List - $II$ |
| $ICI$ | $\mathrm{T}$-Shape |
| $\mathrm{ICI}_3$ | Square pyramidal |
| $\mathrm{CIF}_5$ | Pentagonal bipyramidal |
| $\mathrm{IF}_7$ | Linear |
Choose the correct answer from the options given below:
Which solution has the highest $pH $ value
→The first four $I.E.$ values of an element are $284, 412, 656$ and $3210\, k.J\, mol^{-1}.$ The number of valence electrons in the element are
→During the nuclear explosion, one of the products is $^{90} \mathrm{Sr}$ with half life of $6.93$ years. if $1 \;\mu g$ of $^{90} \mathrm{Sr}$ was absorbed in the bones of a newly born baby in place of $Ca$, how much time, in years, is required to reduce it by $90 \%$ if it is not lost metabolically
→The magnetic quantum number specifies
Dissociation constant of a weak acid is $1 \times {10^{ - 4}}$. Equilibrium constant of its reaction with strong base is
→