The survey of more than 2,500 men aged between 16 and 25 conducted by India Today magazine across 11 cities found that 49 percent claimed to have had sex with a sex worker while 37 percent said they had had a homosexual experience.

But 63 percent of young men in conservative India said they expected the women they married to be a virgin.

The average age of their first sexual encounter appears to be falling -- to 18 years from 23 in a similar survey two years ago, but condom use is on the rise, the report said. More than half of the men surveyed said they always used a condom.

Fourteen percent of those surveyed said they had had sex with a member of their own family.