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Subject :NSO    Class : Class 8

Liquids and gaseous fuels have more advantages over solid fuels. Some of the advantages are
(i) Calorific value of liquid and gaseous fuels is higher than the solid fuels.
(ii) Liquids and gaseous fuels have higher ignition temperatures than the solid fuels.
(iii) Liquids and gaseous fuels are easier to store since solid fuels occupy lot of space.
(iv) Liquids and gaseous fuels burn completely, leaving no residue.
The correct advantages are

A (i), (ii) and (iii)
B (i), (iii) and (iv)
C (ii), (iii) and (iv)
D (i), (ii) and (iv).

Ans 1:

Class : Class 3
in the summary,it is already given that the first option is correct,still it dosent show so in the above question

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
There is no fuel till now which can't burn without leaving any harmful residue.Thus , option A should be the answer

Ans 4:

Class : Class 8
The information of study materials of this chapter from this site is wrong.Please rectify the data of study material.

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