Save Energy: O Level Chemistry Quiz Questions and Answers PDF - 105

MCQ 521: Energy can be conserved through

1. insulating lofts with fiber glass
2. use of lame burn engines
3. using catalytic converters
4. controlling temperature

MCQ 522: The Symbol Hg is of

1. helium
2. Hydrargyrum
3. hydrogen
4. Natrium

MCQ 523: In an endothermic reaction,

1. more light is produced
2. chemical bonds are formed
3. a lot of steam is produced
4. products contain more energy than the reactants

MCQ 524: On passing electricity through the electrolyte solution,

1. the electrolyte splits up
2. the electrolyte decomposes
3. the ions migrate towards oppositely charged electrodes
4. all of above

MCQ 525: What is correct about washing soda?

1. it is acidic
2. it is alkaline
3. it is neutral
4. it is basic