This pdf includes grade 12 maths ;it would help you to understand it easily

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Here's a list of common words along with their more advanced synonyms:

Begin: Commence
End: Conclude
Smart: Intelligent
Happy: Content
Sad: Melancholy
Big: Enormous
Small: Minute
Tired: Fatigued
Pretty: Beautiful
Ugly: Unattractive
Rich: Affluent
Poor: Impoverished
Angry: Irate
Calm: Serene
Fast: Swift
Slow: Languid
Hard: Difficult
Easy: Simple
Funny: Hilarious
Serious: Solemn
Old: Ancient
New: Novel
Loud: Vociferous
Quiet: Hushed
Difficult: Challenging
Friendly: Amiable
Enemy: Adversary
Beautiful: Exquisite
Scared: Terrified
Courageous: Valiant
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Chemistry multiple-choice questions on electrolysis along with their answers:

1. What is the primary purpose of electrolysis?

• A) To generate heat

• B) To decompose a compound using electricity

• C) To mix different substances

• D) To produce light

Answer: B) To decompose a compound using electricity

2. In electrolysis, the anode is the electrode where:

• A) Reduction occurs

• B) Oxidation occurs

• C) No reaction takes place

• D) Electrons are gained

Answer: B) Oxidation occurs

3. Which of the following statements is true regarding electrolytes?

• A) They are always solid at room temperature.

• B) They do not conduct electricity in solution.

• C) They dissociate into ions when dissolved in water.

• D) They are always acidic.

Answer: C) They dissociate into ions when dissolved in water.

4. During the electrolysis of aqueous sodium chloride (NaCl), which gas is produced at the anode?

• A) Hydrogen

• B) Oxygen

• C) Chlorine

• D) Nitrogen

Answer: C) Chlorine

5. What is the effect of increasing the concentration of the electrolyte on the rate of electrolysis?

• A) It decreases the rate of electrolysis.

• B) It has no effect on the rate.

• C) It increases the rate of electrolysis.

• D) It stops the reaction completely.

Answer: C) It increases the rate of electrolysis.

6. In the electrolysis of copper(II) sulfate solution with copper electrodes, what happens at the cathode?

• A) Copper ions are oxidized to copper metal.

• B) Copper metal is deposited from the solution.

• C) Oxygen gas is evolved.

• D) No reaction occurs.

Answer: B) Copper metal is deposited from the solution.

7. Which of the following factors does NOT influence the products of electrolysis?

• A) Type of electrolyte

• B) Nature of the electrodes

• C) Temperature of the electrolyte

• D) Size of the container

Answer: D) Size of the container

8. What is produced at the cathode during the electrolysis of dilute sulfuric acid (H₂SO₄)?

• A) Hydrogen gas

• B) Oxygen gas

• C) Sulfur dioxide

• D) Water

Answer: A) Hydrogen gas

9. In electrolysis, Faraday's laws relate to:

• A) The temperature and pressure of the reaction.

• B) The amount of substance produced at an electrode to the quantity of electricity passed through the electrolyte.

• C) The color changes during the reaction.

• D) The physical state of reactants.

Answer: B) The amount of substance produced at an electrode to the quantity of electricity passed through the electrolyte.

10. Which of the following is a common application of electrolysis?

• A) Electroplating

• B) Combustion engines

• C) Distillation

• D) Filtration

Answer: A) Electroplating

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