Class 6 Science MCQs - Chapter 15
Reversible and Irreversible Changes Multiple Choice Questions (MCQs) PDF Download - 5
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Reversible and Irreversible Changes MCQs with Answers PDF Download: Quiz 5
When a salt is mixed with water it forms a
- solution
- medicines
- food additive
- preserver
To initiate a material for burning we need
- heat
- water
- flammable liquid
- sunlight
Serious damages, injuries and even deaths are caused by
- fire
- oil
- gas
- carbon
During burning process, energy is released in form of
- light energy
- heat energy
- both a and b
- chemical energy
Changes in matter takes place
- in day
- noon
- night
- all the time
Class 6 Science Mock Tests
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6th Grade Science MCQs eBook Download
Grade 7 Science Mock Tests
Grade 6 Science Practice Tests
Grade 7 Science MCQ with Answers
- Name of physicist who discovered nucleus of atom was
- Sodium ion has
- As compare to air, sound travels faster in
- A force which occurs when two surfaces come in contact and slows down motion while acting in
- Formula that shows number and kind of atoms which a substance of a molecule contained, is known as
Reversible and Irreversible Changes MCQ Book Questions
- A greenhouse gas that absorbs energy and maintains earth's temperature is
- A single system on which all scientists all over world agree for units of measurement is called
- Iron adopts changes slowly and gradually by process of
- An average speed of an aero plane is equal to
- Rate of photosynthesis decreases because enzymes are denatured at