Which statement is the correct representation of these electric field lines?
both plates are negatively charged.
both plates are neutral.
plate a is negatively charged and plate b is positively charged.
plate a is positively charged and plate b is negatively charged.
both plates are positively charged.

Answer

The correct answer is "Plate A is negatively charged and plate B is positively charged"

Explanation:

In an electric field, the direction depends on the charge of the plate.

For a positively charged plate, the electric field is always directed away from it.

For the negatively charged plate, the electric field will be directed towards it.

Looking ate plate A, the electric field in directing toward it. Therefore, it's a negative charge.

For plate B, the electric field is moving away from it, making it a positively charged plate.

That is incorrect, The type of reaction that Mg +S→ MgS is a synthesis reaction.

Explanation: Synthesis reaction as refers to as direct combination is a reaction in which two or more chemical species combine to form more complex product.