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By Expert Faculty of Sri Chaitanya
a
Be2C+H2O→ Marsh gas
b
Al4C3+H2O→ Gas is a content of CNG
c
CaC2+H2O→ Gas is used for welding purpose with O2 gas
d
Ca3P2+H2O→ Gas is used in Holme signals with CaC2
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Correct option is
1. Gives CH4(g), which is also called Marsh gas 2. It also gives CH4(g), which is a constituent of CNG. 3. It gives acetylene (HC≡CH) gas with O2 used for welding. 4. It gives phosphine PH3 ) gas used in Holme's signal.
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