For the following questions answer them individually
In the given pentapeptide, find out an essential amino acid (Y) and the sequence present in the pentapeptide:
image
Choose the correct answer from the options given below:
Consider a weak base 'B' of $$pK_{b}=5.699 $$. 'x' mL of 0.02 M HCI and 'y' mL of 0.02 M weak base 'B' are mixed to make 100 mL of a buffer of pH 9 at 25 °C. The values of 'x' and 'y' respectively are:
[Given: log 2 = 0.3010, log 3 = 0.4771, log 5 = 0.699]
The correct statement among the followring is:
Given below are two statements:
Statement I: Griss-Ilosvay test is used for the detection of nitrite ion, which involves the use of sulphanilic acid and $$\alpha-naphthylamine$$ reagent.
Statement II: In the above test, sulphanilic acid is diazotized by the acidified nitrite ion, which on further coupling with $$\alpha-naphthylamine$$ forms an azo-dye.
In the light of the above statements, choose the correct answer from the options given below
In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.
Consider the following reactions giving major product. Identify the correct reaction.
Given below are two statements:
Statement I: The number of pairs, from the following, in which both the ions are coloured in aqueous solution is 3.
$$[Sc^{3+},Ti^{3+}],[Mn^{2+},Cr^{2+}],[Cu^{2+},Zn^{2+}]\text{ and }[Ni^{2+},Ti^{4+}]$$
Statement II: $$Th^{4+}$$ is the strongest reducing agent among $$Th^{4+},Ce^{4+},Gd^{3+}\text{ and }Eu^{2+}$$.
In the light of the above statements, choose the correct answer from the options given below
Consider the following reaction sequence
image
Compound (y) develops characte1~stic colour with neutral $$FeCl_{3}$$ solution.
Identify the INCORRECT statement from the following for the above sequence.
An organic compound undergoes first order decomposition. The time taken for decomposition to $$\left(\frac{1}{8}\right)^{th}$$ and $$\left(\frac{1}{10}\right)^{th}$$ of its initial concentration are $$t_{1/8}$$ and $$t_{1/10}$$ respectively. What is the value of $$\frac{t_{1/8}}{t_{1/10}}\times 10$$ ?
$$(\log{2}=0.3)$$
$$20.0 dm^{3}$$ of an ideal gas 'X' at 600 K and 0.5 MPa undergoes isothermal reversible expansion until pressme of the gas is 0.2 MPa. Which of the following option is correct?
(Given: $$\log 2 = 0.30 10 and \log 5 = 0.6989$$)
