Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with
\(K_4\)[Fe(CN)\(_6\)] is : \[ {Cu}^{2+}, \, {Fe}^{3+}, \, {Ba}^{2+}, \, {Ca}^{2+}, \, {NH}_4^+, \, {Mg}^{2+}, \, {Zn}^{2+} \]
The correct match of the group reagents in List-I for precipitating the metal ion given in List-II from solutions is:
| List-I | List-II |
|---|---|
| (P) Passing H2S in the presence of NH4OH | (1) Cu2+ |
| (Q) (NH4)2CO3 in the presence of NH4OH | (2) Al3+ |
| (R) NH4OH in the presence of NH4Cl | (3) Mn2+ |
| (S) Passing H2S in the presence of dilute HCl | (4) Ba2+ (5) Mg2+ |
The monomer (X) involved in the synthesis of Nylon 6,6 gives positive carbylamine test. If 10 moles of X are analyzed using Dumas method, the amount (in grams) of nitrogen gas evolved is ____. Use: Atomic mass of N (in amu) = 14
If \(S=\{1,2,....,50\}\), two numbers \(\alpha\) and \(\beta\) are selected at random find the probability that product is divisible by 3 :
Given below are two statements:
Statement I: Arginine and Tryptophan are essential amino acids.
Statement II: Glycine does not have any chiral carbon.
In the light of the above statements, which is the correct option?