The correct answer is 1, 2, 3 and 4.

• Neutrino is an elementary subatomic particle with no electric charge, very little mass, and 1/2 unit of spin.
• A neutrino is an elementary particle that usually travels close to the speed of light. Hence, Statement 1 is correct.
• It is electrically neutral and is able to pass through ordinary matter almost undisturbed.
• Neutrinos are created in nuclear reactions of beta decay.  Hence, Statement 2 is correct.
• Neutrino has a very tiny mass, no charge, and spins half. Hence Statement 3 is correct.
• It interacts very weakly with other matter particles so weakly that every second trillion of neutrinos fall on us and pass through our bodies unnoticed. This makes neutrinos extremely difficult to detect. Hence Statement 4 is correct.
• Neutrinos have a very small, but nonzero rest mass.
• Neutrinos are affected only by a weak sub-atomic force of a much shorter range than electromagnetism and are therefore able to pass through great distances in matter without being affected by it.

• Some important aspects of the 11th Five-year plan (2007-2012).
  • The average annual economic growth rate of 8%.
  • The farm sector grew at an average rate of 3.7% as against the 4% targeted.
  • The industry grew with an annual average growth of 7.2% against the 10% targeted.
  • Objective:-
    • Rapid and inclusive growth.
    • Empowerment through education and skill development.
    • Reduction of gender inequality.
    • Environmental sustainability.