21. 

Arrange the following periods in chronological order:
I. Neolithic period
II. Mesolithic period
III. Chalcolithic period
IV. Palacolithic period

22. 

Consider the following statements:
I. The Atomic Energy Commission was set up under the chairmanship of Homi J.Bhaba to formulate a policy for all atomic energy activities in the country.
II. In 1956, India's first nuclear reactor in Trombay near Bombay began to function.

23. 

Match List I with List II correctly and select your answer using the codes given below:

List I	List II
a) Justice Party	1) E.V.Ramasamy Periyar
b) Devadasi system	2) Dr.S.Dharmamba
c) Vaikam Hero	3) Dr.Muthulakshmi Reddy
d) Veera Tamilannai	4) Thiyagaraja Chetty

        Codes:

24. 

Which of the following is incorrectly matched?

25. 

Which of the following is incorrectly matched?

26. 

Which of the following is incorrectly matched?

27. 

Which of the following is incorrectly matched?

28. 

Match List I with List II correctly and select your answer using the codes given below:

List I	List II
a) Assam	1) Ponam
b) Orissa	2) Mashan
c) Andhra Pradesh	3) Jhum
d) Kerala	4) Podu

        Codes:

29. 

Match List I with List II correctly and select your answer using the codes given below:

              (Generation of Computers)

List I	List II
a) Present day	1) Valves
b) First	2) Integrated Circuits
c) Second	3) Fifth Generation
d) Third	4) Transistors

        Codes:

30. 

Which is the correct statement?
I. Sugarcane
II. Paddy
III. Cotton
IV. Jute