Which of the following statements about a compound is incorrect?

1. A molecule of a compound has atoms of different elements.
2. A compound cannot be separated into its constituent elements by the physical method of separation.
3. A compound retains the physical properties of its constituent elements.
4. The ratio of atoms of different elements in a compound is fixed.

Subtopic:  Millimole/Equivalent Concept |
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From NCERT
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Enzymes convert glucose (= 180.2) to ethanol (M = 46.1) according to the equation:

\(\mathrm {C_6H_{12}O_6\rightarrow 2C_2H_5OH\ +\ 2CO_2}\)

What is the maximum mass of ethanol that can be made from 15.5 kg of glucose?

1. 0.256 kg
2. 0.512 kg
3. 3.96 kg
4. 7.93 kg
Subtopic:  Equation Based Problem | Millimole/Equivalent Concept |
 77%
From NCERT
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