1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Change Language
The atomic numbers of Vanadium (V), Chromium (cr), Manganese (Mn) and Iron (Fe), respectively, $$23,24,25$$ and $$26$$. Which one of these may be expected to have the higher second ionization enthalpy?
A
Cr
B
Mn
C
Fe
D
V
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Change Language
The reaction of chloroform with alcoholic $$KOH$$ and p-toluidine forms
A
AIEEE 2003 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 222 English Option 1
B
AIEEE 2003 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 222 English Option 2
C
AIEEE 2003 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 222 English Option 3
D
AIEEE 2003 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 222 English Option 4
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Change Language
The reason for double helical structure of $$DNA$$ is operation of
A
dipole-dipole interaction
B
hydrogen bonding
C
electrostatic attractions
D
van der Waals' forces
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Change Language
A red solid is insolvable in water. However it becomes soluble if some $$K{\rm I}$$ is added to water. Heating the red solid in a test tube results in liberation of some violet colored fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is :
A
$$Hg{{\rm I}_2}$$
B
$$HgO$$
C
$$P{b_3}{O_4}$$
D
$${\left( {N{H_4}} \right)_2}C{r_2}{O_7}$$
JEE Main Papers
2023
2021
EXAM MAP