Question

Give the composition of the following: (2) (1) Producer gas (ii) Water gas b) Why is baking powder used in making cakes and bread? (1) c) Name the youngest variety of coal and mention the percentage of carbon present in it​

Answer 1

Answer:

option ii

Explanation:

option ii is the correct answer

Answer 2

Answer:

i) producer gas - Producer gas is a mixture containing carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2) and nitrogen (N2). In the USA.

ii) water gas - Water-gas is a mixture of carbon monoxide (CO) and hydrogen (H2) produced by passing steam over red-hot coke using the endothermic reaction C + H2O # CO + H2.

b) Baking powder is used to increase the volume and lighten the texture of baked goods. It works by releasing carbon dioxide gas into a batter or dough through an acid–base reaction, causing bubbles in the wet mixture to expand and thus leavening the mixture.

c) The carbon content of lignite ranges from 65-70%, therefore, compared to other types of coal it contains the greatest amount of compounds other than carbon—such as sulfur and mercury. Lignite is the youngest fossil fuel produced, with an age of approximately 60 million years.

Explanation:

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