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प्रश्न
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
उत्तर
False
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
False