Class 7 science Practice Tests
Class 7 Science Online Tests
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The MCQ: Cold is caused by; "Respiratory System Diseases" App Download (Free) with answers bacteria, viruses, insects and dust to study online certificate courses. Solve respiration and food energy quiz questions, download Google eBook (Free Sample) for online elementary school.
MCQ 1: Cold is caused by
MCQ 2: The number of viruses which an average sneeze can spread in 10 meters area, is
MCQ 3: Flu is caused by
MCQ 4: The main cause of 'asthma' is
MCQ 5: The number of chemicals found in a cigarette is
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