Question

chips
nufacturers hll the packet of chips with nitrogen gas?
Two marks question (05X02=10)
11. Explain the following in terms of gain or loss of oxygen with one example:
(a) Oxidation (b) Reduction
12. A copper coin is kept in a solution of silver nitrate for some time, what will happen to
the coin and the colour of the solution?
13. Classify the following reaction as combination, decomposition, displacement and double
displacement reaction:-
dj Bouz +11 2004 BaSO4+2112lb) 3CuS04+ 2Al-Al2(SO4)3+3Cu
c)ZnCO3 --ZnO + CO2d) C +02-C02
14.Why respiration is considered an exothermic reaction? Explain.
15. Why photosynthesis is considered an endothermic reaction? Explain
Three marks question (05X03=15)
16. Write the common methods to prevent it

please tell me the answer fast...​

Answer 1

Answer:

chips manufacturers seal the packets with unreactive nitrogen gas to prevent the rancidity of chips.

11.*oxidation* :the (gain of oxygen) addition of oxygen in substance is called oxidation.

*reduction*:the (loss of oxygen) or the removal of oxygen from substance is called reduction.

12.if we keep the the copper coin in silver nitrate solution the displacement reaction will take place. The copper will displace the silver and will form copper nitrate and silver will get deposited on the coin.

13.b) displacement reaction

c) decomposition reaction

d) combination reaction

14.respiration is exothermic reaction because during the respiration the glucose react with oxygen to breakdown it into carbon dioxide and water and during this process the energy is released and we know that the reaction in which energy is released is called as exothermic reaction.

15. Photosynthesis is endothermic reaction because the sunlight is being absorbed during this reaction and the definition suggests that the reaction in which heat or energy is being absorbed then the reaction is called as endothermic reaction

16. Don't know