Q.1. a, d

Q.2. False

Q.3. c

Q.4. False

Q.5. a, d

Q.6. False

Q.7. False

Q.8. False – 50000 – 99999

Q.9. a, c, d

Q.10. True

Q.11. False

Q.12. a, c

Q.13. True

Q.14. a, c, d

Q.15. True

Q.16. False – except with a very advanced technical method

Q.17. False

Q.18. False

Q.19.c

Q.20. False