1
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

'$$\mathrm{X}$$' is :

JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Hydrocarbons Question 32 English

A
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Hydrocarbons Question 32 English Option 1
B
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Hydrocarbons Question 32 English Option 2
C
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Hydrocarbons Question 32 English Option 3
D
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Hydrocarbons Question 32 English Option 4
2
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

The starting material for convenient preparation of deuterated hydrogen peroxide ($$\mathrm{D_{2}O_{2}}$$) in :

A
$$\mathrm{BaO_{2}}$$
B
2-ethylanthraquinol
C
$$\mathrm{BaO}$$
D
$$\mathrm{K_{2}S_{2}O_{8}}$$
3
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
$$\mathrm{Si-Si > C-C > Sn-Sn > Ge-Ge}$$
4
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In a reaction,

JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 45 English

reagents 'X' and 'Y' respectively are :

A
$$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$ and $$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$
B
$$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$ and $$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$
C
$$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$ and $$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$
D
$$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$ and $$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$
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