The correct answer is 1 and 2 only.

• Unemployment occurs when a person who is actively searching for employment is unable to find work.
• It is often used as a measure of the health of the economy. 
• Types of Unemployment
• Disguised Unemployment:
  • The phenomenon when more people are employed than actually needed. Hence statement 1 is correct.
  • Example: agricultural and the unorganized sectors of India.
• Seasonal Unemployment:
  • Unemployment occurs during certain seasons of the year.
  • Example: Agricultural labourers.
• Structural Unemployment:
  • Unemployment arising from the mismatch between the jobs and the skills of the available workers in the market. Hence statement 2 is correct.
  • Many people do not get jobs due to a lack of requisite skills and due to the poor educational level.
• Cyclical Unemployment:
  • It is the result of the business cycle. Hence statement 3 is not correct.
  • Unemployment rises during recessions and declines with economic growth. 
• ​Technological Unemployment:
  • It is the loss of jobs due to changes in technology.
• ​Frictional Unemployment:
  • Frictional Unemployment is also known as Search Unemployment. Hence statement 4 is not correct.
  • It refers to the time lag between the jobs when an individual is searching for a new job or is switching between the jobs.
• ​Vulnerable Employment:
  • This means people are working informally without proper job contracts.
  • These persons are deemed ‘unemployed’ since records of their work are never maintained.