1
WB JEE 2023
MCQ (More than One Correct Answer)
+2
-0
Change Language

The conversion(s) that can be carried out by bromine in carbon tetrachloride solvent is/are

A
PhCH = CHCH$$_3$$ $$\to$$ PhCHBrCHBrCH$$_3$$
B
WB JEE 2023 Chemistry - Carboxylic Acids and Amines Question 3 English Option 2
C
CH$$_3$$CH$$_2$$COOH $$\to$$ CH$$_3$$CHBrCOOH
D
WB JEE 2023 Chemistry - Carboxylic Acids and Amines Question 3 English Option 4
2
WB JEE 2023
MCQ (More than One Correct Answer)
+2
-0
Change Language

The correct set(s) of reactions to synthesize benzoic acid starting from benzene is/are

A
(i) $$B{r_2}/Fe$$, (ii) Mg/dry ether, (iii) $$C{O_2}$$, (iv) $${H_3}{O^ \oplus }$$
B
(i) $$B{r_2}/Fe$$, (ii) $$N{H_3},25^\circ $$, (iiI) $$NaN{O_2},$$ dil. $$HCl,0^\circ $$ to $$5^\circ $$, (iv) $$CuCN/KCN$$, (v) dil.HCl, $$\Delta$$
C
(i) CH$$_3$$Cl, Anhydrous AlCl$$_3$$, (ii) $$KMn{O_4}|\mathop O\limits^\Theta H,\Delta $$, (iii) $${H_3}\mathop O\limits^ \oplus $$
D
(i) CH$$_3$$COCl, Anhydrous AlCl$$_3$$, (ii) Br$$_2$$, NaOH, (iii) $${H_3}{O^ \oplus }$$
3
WB JEE 2023
MCQ (More than One Correct Answer)
+2
-0
Change Language

Which statement(s) is/are applicable above critical temperature?

A
A gas cannot be liquified.
B
Surface tension of a liquid is very high.
C
A liq. phase cannot be distinguished from a gas phase.
D
Density changes continuously with P or V.
4
WB JEE 2023
MCQ (More than One Correct Answer)
+2
-0
Change Language

Which of the following mixtures act(s) as buffer solution?

A
NaOH + CH$$_3$$COOH (1 : 1 mole ratio)
B
NH$$_4$$OH + HCl (2 : 1 mole ratio)
C
CH$$_3$$COOH + NaOH (2 : 1 mole ratio)
D
CH$$_3$$COOH + NaOH (1 : 2 mole ratio)
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