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Chemistry CBSE Live product
Class 10 (2025-26)
Metals and non-metals
Annual Revision V - Metals and non-metals
1.
Ionic compounds
Question:
2
m.
Identify the correct answer:
1.
A compound X does not conduct electricity in solid state but conducts when dissolved in water. It also has a high melting point. Which of the following could be compound X?
Glucose
Ethanol
Sodium chloride
Naphthalene
2.
Why is the formula of magnesium chloride written as \(MgCl_2\)?
Because chlorine forms two bonds
Because magnesium needs two chlorine atoms for stability
Because chlorine donates two electrons
To balance the \(+2\) charge of \(Mg^{2+}\) with two \(Cl^-\) ions
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