JEE Main 2019 (Online) 10th January Morning Slot | Practical Organic Chemistry Question 46 | Chemistry

JEE Main 2019 (Online) 10th January Morning Slot

MCQ (Single Correct Answer)

-1

If dichloromethane (DCM) and water (H₂O) are used for differential extraction, which one of the following statements is correct ?

DCM and H₂O would stay as upper and lower layer respectively in the separating funnel (S.F.)

DCM and H₂O will make turbid/colloidal mixture

DCM and H₂O would stay as lower and upper layer respectively in the separating funnel(S.F).

DCM and H₂O will be miscible clearly

JEE Main 2019 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

-1

The correct match between Item-I and Item-II is :

Item-I (drug)		Item-II (test)
A	Chloroxylenol	P	Carbylamine test
B	Norethindrone	Q	Sodium hydrogen carbonet test
C	Sulphapyridine	R	Ferric chloride test
D	Penicillin	S	Bayer's test

A $$ \to $$ R; B $$ \to $$ P; C $$ \to $$ S; D $$ \to $$ Q

A $$ \to $$ Q; B $$ \to $$ S; C $$ \to $$ P; D $$ \to $$ R

A $$ \to $$ R; B $$ \to $$ S; C $$ \to $$ P; D $$ \to $$ Q

A $$ \to $$ Q; B $$ \to $$ P; C $$ \to $$ S; D $$ \to $$ R

JEE Main 2018 (Online) 16th April Morning Slot

MCQ (Single Correct Answer)

-1

For standardizing NaOH solution, which of the following is used as a primary standard ?

Ferrous Ammonium Sulfate

dil. HCl

Oxalic acid

Sodium tetraborate

JEE Main 2018 (Online) 16th April Morning Slot

MCQ (Single Correct Answer)

-1

In a complexometric titration of metal ion with ligand
M(Metal ion) + L(Ligand) $$ \to $$ C(Complex) end point is estimated spectrophoto - metrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs, then the titration plot between absorbed light (A) versus volume of ligand 'L' (V) would look like :