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2. Form pairs

Column ‘A’ Column ‘B’
(1) X-rays (a) GMRT
(2) Optical telescope (b) ISRO
(3) Indian radio telescope (c) Hubble
(4) Launching artificial-satellite (d) Chandra

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‘A’ Groups    ‘B’ Groups
(i)  X-rays (d) Chandra
(ii) Optical telescope (c) Hubble telescope
(iii) Indian radio (a) GMRT

(iv) Launching artificial satellites

(b) ISRO

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