The following are properties of baking soda, exceptQuestion 9Select one:a.Has odourb.Decomposes at 270oCc.Gives off water and carbon dioxide at decompositiond.White crystals

The properties of baking soda mentioned in the question are:

a. Has odour b. Decomposes at 270oC c. Gives off water and carbon dioxide at decomposition d. White crystals

The question asks for the property of baking soda that is not mentioned in the options. To find the correct answer, we need to identify which of the given properties is not true for baking soda.

Let's analyze each option:

a. Has odour: Baking soda is known for its odor-neutralizing properties, so it does have a mild odor. This property is true for baking soda.

b. Decomposes at 270oC: Baking soda does decompose at high temperatures, including around 270oC. This property is true for baking soda.

c. Gives off water and carbon dioxide at decomposition: When baking soda decomposes, it releases water and carbon dioxide gas. This property is true for baking soda.

d. White crystals: Baking soda is commonly found as a white crystalline powder. This property is true for baking soda.

Based on the analysis, all the given properties are true for baking soda. Therefore, the correct answer is that there is no property of baking soda that is not mentioned in the options provided.