1
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Number of cyclic tripeptides formed with 2 amino acids A and B is :

A
2
B
3
C
5
D
4
2
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The shortest wavelength of hydrogen atom in Lyman series is $$\lambda$$. The longest wavelength is Balmer series of He$$^+$$ is

A
$$\frac{36\lambda}{5}$$
B
$$\frac{5}{9\lambda}$$
C
$$\frac{9\lambda}{5}$$
D
$$\frac{5\lambda}{9}$$
3
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which of the given compounds can enhance the efficiency of hydrogen storage tank?

A
SiH$$_4$$
B
Li/P$$_4$$
C
NaNi$$_5$$
D
Di-isobutylaluminium hydride
4
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I List II
Reaction Reagents
(A) Hoffmann Degradation (I) $$\mathrm{Conc. KOH}$$, $$\Delta$$
(B) Clemenson reduction (II) $$\mathrm{CHCl_3,NaOH/H_3O}$$$$^ \oplus $$
(C) Cannizaro reaction (III) $$\mathrm{Br_2,NaOH}$$
(D) Reimer-Tiemann Reaction (IV) $$\mathrm{Zn-Hg/HCl}$$

Choose the correct answer from the options given below :

A
(A) - III, (B) - IV, (C) - I, (D) - II
B
(A) - II, (B) - IV, (C) - I, (D) - III
C
(A) - III, (B) - IV, (C) - II, (D) - I
D
(A) - II, (B) - I, (C) - III, (D) - IV
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