JEE Main 2023 (Online) 6th April Morning Shift | p-Block Elements Question 50 | Chemistry

1

JEE Main 2023 (Online) 6th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

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

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

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

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