Changes Around Us
Quiz by Shipra Verma
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5 questions
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- Q1Why is burning of wood a chemical change?because the wood changes its size on burning.Because on burning it produces a new substance.Because the wood changes its shape on burning.Because it doesn't produce any new substance on burning.30s
- Q2Out of the following, which one is a physical and irreversible change?Stretching of rubber bandBoiling of waterMelting of waxTearing of a paper30s
- Q3Which kind of change is drying of wet clothes?irreversible changeundesirable changephysical changechemical change30s
- Q4Why a gap is left between the railway tracks?to avoid accidents due to contraction of the tracks in summersto avoid accidents due to freezing of the tracks in summersto avoid accidents due to expansion of the tracks in wintersto avoid accidents due to expansion of the tracks in summers30s
- Q5Find the odd one out. Justify your answer as well. growth of a child, blinking of eye, rusting of iron, germination of a seedblinking of eye as it is a fast changegermination of a seed as it is an irreversible changerusting of iron as it is a chemical changegrowth of a child as it is a physical change30s