Which of the following is a product of incomplete combustion of hydrocarbon?
A. NaOH
B. CO₂
C. CO
D. H₂O
Answer: Option C
Solution (By JKExamLibrary)
Incomplete combustion due to insufficient oxygen produces carbon monoxide (CO) and/or soot (C). Complete combustion gives CO₂ and H₂O. CO is poisonous, binds to hemoglobin.
Explanation:
Liquids have a definite volume but take the shape of their container. Solids have the least intermolecular space and highest density. Gases have maximum intermolecular space and are highly compressible. This relates directly to the kinetic theory of matter, which describes particle arrangement and movement in different states.
Explanation:
Nitric acid (HNO₃) was called aqua fortis (strong water) due to its ability to dissolve metals like silver (except gold). Oil of vitriol is H₂SO₄; muriatic acid is HCl.
Explanation:
The salt bridge (e.g., KCl-agar) allows migration of ions between half-cells, completing the circuit and maintaining charge neutrality. Without it, charge buildup would stop the reaction. It does not increase current or electrode potential. It prevents mixing of solutions. A porous membrane can also serve. Ions in the bridge must have similar mobility and not interfere with cell reactions.
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