Class 7 Science MCQs - Chapter 8
Elements and Compounds Trivia Questions and Answers PDF - 8
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Elements and Compounds Questions & Answers PDF Download: MCQ Quiz 8
MCQ 36: The process which involves in breaking down the element by passing electricity through it is called
- electrolysis
- hydrolysis
- photolysis
- photosynthesis
MCQ 37: Chinese thought that the number of elements were
- 3
- 4
- 2
- 5
MCQ 38: Low densities, low melting, low boiling point and poor conductivity are found in
- metals
- non metals
- alkalis
- metalloids
MCQ 39: Air ships and balloons use gas called
- oxygen
- hydrogen
- helium
- neon
MCQ 40: A compound which yields in black solid, copper oxide and colorless gas carbon dioxide on heating, is
- copper carbonate
- iron sulfide
- sodium chloride
- copper chloride
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Grade 8 Science MCQ with Answers
- With the passage of time the transported sediments become
- Dead remains of animals and plants also accumulate to form
- Animal which is being hunt down is called
- Heat loss may help the matter to
- Higher the frequency the greater will be
- A joint which is made between adjoining rails to expand without bending is called
Elements and Compounds MCQ Book Questions
- Electrolyte used in the purification of copper is
- When the ovule and the nucleus of the pollen grain are joined
- For current to flow, the circuit should be
- In most species of plants, food is stored in
- Ionic bonds are
- A substance which consists of two or more elements which have been combined chemically is called