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baskar govindarajulu
's Polls
gases is used for refrigeration
Which of the following gases is used for refrigeration ?
A. Chlorine
1 vote (12%)
A. Chlorine
B. Sulphur dioxide
0 votes (0%)
B. Sulphur dioxide
C. Phosphine
1 vote (12%)
C. Phosphine
D. Ammonia
6 votes (75%)
D. Ammonia
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