1
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II

LIST I
Name of reaction
LIST II
Reagent used
A. Hell-Volhard-Zelinsky reaction I. $$NaOH + {I_2}$$
B. Iodoform reaction II. (i) $$Cr{O_2}C{l_2},C{S_2}$$ (ii) $${H_2}O$$
C. Etard reaction III. (i) $$B{r_2}$$ / red phosphorus (ii) $$H_2O$$
D. Gatterman-Koch reaction IV. $$CO,HCl,$$, anhyd. $$AlC{l_3}$$

Choose the correct answer from the options given below:

A
A-III, B-I, C-IV, D-II
B
A-III, B-I, C-II, D-IV
C
A-I, B-II, C-III, D-IV
D
A-III, B-II, C-I, D-IV
2
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

The correct order of bond enthalpy ($$\mathrm{kJ~mol^{-1}}$$) is :

A
$$\mathrm{C-C > Si-Si > Sn - Sn > Ge-Ge}$$
B
$$\mathrm{Si-Si > C-C > Ge-Ge > Sn-Sn}$$
C
$$\mathrm{C-C > Si-Si > Ge-Ge > Sn-Sn}$$
D
$$\mathrm{Si-Si > C-C > Sn-Sn > Ge-Ge}$$
3
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For electron gain enthalpies of the elements denoted as $$\Delta_{\mathrm{eg}} \mathrm{H}$$, the incorrect option is :

A
$$\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{I})<\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{At})$$
B
$$\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{Te})<\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{Po})$$
C
$$\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{Cl})<\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{F})$$
D
$$\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{Se})<\Delta_{\mathrm{eg}} \mathrm{H}(\mathrm{S})$$
4
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Given below are two statements:

Statement I : Chlorine can easily combine with oxygen to form oxides; and the product has a tendency to explode.

Statement II : Chemical reactivity of an element can be determined by its reaction with oxygen and halogens.

In the light of the above statements, choose the correct answer from the options given below :

A
Statement I is true but Statement II is false
B
Both the Statements I and II are false
C
Statement I is false but Statement II is true
D
Both the Statements I and II are true
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