JEE Main 2014 · 19 Apr · Shift 1 · Chemistry Q58

ChemistrySingle correct+4 / -1Question 58 of 90

The reason for double helical structure of DNA is the operation of :

Electrostatic attractions

van der Waals forces

Dipole - Dipole interactions

Hydrogen bonding

Answer and worked solution

Official answer: D

The two strands are held together by hydrogen bonds between complementary bases (A-T, G-C), giving the double helix.

JEE Main 2014 · 19 Apr · Shift 1, Chemistry question 58