Question

1.A reaction that releases energy from the system in the form of heat is called [ ] a)endothermic b)exothermic c)physical change d)none 2.A reaction that the system absorb energy from its surroundings in the form of heat is called [ ] a)exothermic b)endothermic c)both a&b c) none 3.neutralisation reaction is example of— reaction [ ] a)slow reaction b)fast reaction c)exothermic d)both b&c 4.photosynthesis is an example of— reaction [ ] a)exothermic b)instantaneous reaction c)decomposition d)endothermic 5.Respiration is an example of— reaction [ ] a)endothermic b)exothermic c)very slow reaction d)all 6.which of the following is dry ice [ ] a)solid SO2 b)liquid CO c)solid CO2d)none 7.solution of sulphuric acid in to water is an example of—reaction [ ] a)double combination b)slow reaction c)exothermic reaction d)moderate reaction 8.which of the following is exothermic reaction [] a)photosynthesis b) boiling c)melting ice d)nuclear fission 9.—reaction energy in the form of heat [ ] a)exothermic b)endothermic c)both a&b d)none 10.which of the following is endothermic reaction [ ] a)neutralisation b)respiration reaction c)combustion reaction d)photosynthesis

Answer 1

Answer:

1.exothermic reactions

2endothermic reactions

3.both b and c

4.endothermic reactions

5.exothermic reactions

6.solid co2

7.highly exothermic

8.nuclear fission

9.both a and b

10.photosynthesis

Explanation:

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