1
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
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pKa of a weak acid (HA) and pKb of a weak base (BOH) are 3.2 and 3.4, respectively. The pH of their salt (AB) solution is :
A
6.9
B
7.0
C
1.0
D
7.2
2
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following compounds will behave as a reducing sugar in an aqueous KOH solution?
A
JEE Main 2017 (Offline) Chemistry - Biomolecules Question 178 English Option 1
B
JEE Main 2017 (Offline) Chemistry - Biomolecules Question 178 English Option 2
C
JEE Main 2017 (Offline) Chemistry - Biomolecules Question 178 English Option 3
D
JEE Main 2017 (Offline) Chemistry - Biomolecules Question 178 English Option 4
3
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
The most abundant elements by mass in the body of a healthy human adult are: Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is:
A
37.5 kg
B
7.5 kg
C
10 kg
D
15 kg
4
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following species is not paramagnetic?
A
CO
B
O2
C
B2
D
NO

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