Class 7 Science MCQs - Chapter 20

Simple Chemical Reactions Quiz Questions & Answers PDF Download - 3

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Simple Chemical Reactions Exam Questions and Answers PDF Download: Test 3

MCQ 11:

Dilute acids and alkalis react together to form

salt
water
gases
both a and b

MCQ 12:

Fuel obtained from fossils is known as

decayed animal's oil
decayed plant's extract
fossils fuel
crude oil

MCQ 13:

The process in which reactants react together to form a product, is called

chemical reaction
chemical change
chemical process
chemical procedure

MCQ 14:

If two or more substances are combined to form a new substance, the chemical reaction is termed as

thermal decomposition
combination
addition
combustion

MCQ 15:

When substance combines with oxygen while burning, the reaction is termed as

combustion
burning
evaporation
both a and b

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