1
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The relative strength of interionic/intermolecular forces in decreasing order is :
A
dipole-dipole $$>$$ ion-dipole $$>$$ ion-ion
B
ion-dipole $$>$$ dipole-dipole $$>$$ ion-ion
C
ion-dipole $$>$$ ion-ion $$>$$ dipole-dipole
D
ion-ion $$>$$ ion-dipole $$>$$ dipole-dipole
2
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Match the following :
(i) Riboflavin    (a) Beriberi
(ii) Thiamine    (b) Scurvy
(iii) Pyridoxine   (c) Cheliosis
(iv) Ascorbic acid    (d) Convulsions
A
(i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)
B
(i)-(d), (ii)-(b), (iii)-(a), (iv)-(c)
C
(i)-c, (ii)-(a), (iii)-(d), (iv)-(b)
D
(i)-(a), (ii)-(d), (iii)-(c), (iv)-(b)
3
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
In comparison to the zeolite process for the removal of permanent hardness, the synthetic resins method is :
A
less efficient as the resins cannot be regenerated.
B
more efficient as it can exchange only cations.
C
more efficient as it can exchange both cations as well as anions.
D
less efficient as it exchanges only anions.
4
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The purest from of commercial iron is :
A
pig iron
B
wrought iron
C
cast iron
D
scrap iron and pig iron
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