Ques: Q: Antibiotic drugs are usually effective in treating what kind of infections? Read this paragraph and choose the correct option from the provided answers: Bacterial infections of urinary organs, especially the urinary bladder, are common. They are called urinary tract infections. Generally, they can be cured with antibiotic drugs. However, if they aren't treated, they can lead to more serious infections and damage to the kidneys. Choices: - viral - lethal - biological - bacterial A:
Ans: bacterial

Ques: Q: What are chemical reactions represented by? Read this paragraph and choose the correct option from the provided answers: A chemical reaction occurs when some substances change chemically to other substances. Chemical reactions are represented by chemical equations. Consider a simple chemical reaction, the burning of methane. In this reaction, methane (CH 4 ) combines with oxygen (O 2 ) in the air and produces carbon dioxide (CO 2 ) and water vapor (H 2 O). The reaction is represented by the following chemical equation:. Choices: - liquid equations - nuclear equations - carbon equations - chemical equations A:
Ans: chemical equations

Ques: Q: What large carboxylic acid with three ionizable hydrogen atoms gives some fruits a sour or tart flavor? Read this paragraph and choose the correct option from the provided answers: Citric acid is a large carboxylic acid with three ionizable hydrogen atoms. It is found in citrus fruits and gives them their sour or tart flavor. Choices: - ammonia acid - beryllium acid - hydrochloric acid - citric acid A:
Ans: citric acid

Ques: Q: What do we call a device used to store electric charge? Read this paragraph and choose the correct option from the provided answers: 19.5 Capacitors and Dielectrics A capacitor is a device used to store electric charge. Capacitors have applications ranging from filtering static out of radio reception to energy storage in heart defibrillators. Typically, commercial capacitors have two conducting parts close to one another, but not touching, such as those in Figure 19.13. (Most of the time an insulator is used between the two plates to provide separationsee the discussion on dielectrics below. ) When battery terminals are connected to an initially uncharged capacitor, equal amounts of positive and negative charge, +Q and Q , are separated into its two plates. The capacitor remains neutral overall, but we refer to it as storing a charge. Choices: - charger - amplifier - battery - capacitor A:
Ans:
capacitor