MCQ Class 7 Science Chapter 5 Physical and Chemical Changes Advertisement MCQ’s For All Chapters – Science Class 7th 1. Which characteristic best describes a physical change?Mass is lostComposition changesComposition stays the sameForm stays the sameQuestion 1 of 102. A change that affects iron articles and slowly destroys them is:CrystallizationRustingGalvanizationChemical changeQuestion 2 of 103. Which of these is the smallest particle?A water dropAn atomA moleculeA speck of dustQuestion 3 of 104. Which of the following is a reversible change?Changing of milk into curdMelting of iceGermination of seedBurning of matchstickQuestion 4 of 105. Rusting of iron is a chemical change because:a new substance is formedit is temporary it can be cleaned and the original substance recoveredBurning of matchstickQuestion 5 of 106. Which is the formula of ozone?O3Fe2O3Fe3O2O2Question 6 of 107. The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is:CuOCu2OCuCuSQuestion 7 of 108. Food items when kept carefully get spoiled is a:physical changechemical changeboth (a) and (b)none of theseQuestion 8 of 109. Burning the magnesium ribbon is a:rustingphysical changechemical changeall of theseQuestion 9 of 1010. The chemical name of baking soda is:hydrogen carbonatesodium hydrogen carbonatecalcium carbonatenone of theseQuestion 10 of 10 Loading...
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