Important Compounds and Its Uses MCQ Quiz in मल्याळम - Objective Question with Answer for Important Compounds and Its Uses - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക

The Correct answer is Dipotassium oxide.

Key Points

• The chemical formula K₂O represents a compound formed by potassium (K) and oxygen (O).
• Its correct name is Dipotassium oxide, as it contains two potassium atoms for every one oxygen atom.
• This is a type of binary ionic compound, meaning it consists of two elements: a metal (potassium) and a nonmetal (oxygen).
• Potassium, being a member of group 1 in the periodic table, readily loses one electron to form a +1 charge (K⁺).
• Oxygen, on the other hand, typically gains two electrons to form a -2 charge (O^2-).
• To balance the charges, two potassium ions (K⁺) combine with one oxide ion (O^2-) to form K₂O.
• The prefix "Di-" in Dipotassium oxide indicates the presence of two potassium atoms.
• This compound is commonly used in the production of glass and ceramics and is a strong base when dissolved in water.

Additional Information

• Potassium oxide
  • This name is often used informally to describe K₂O, but it is not completely accurate.
  • It does not specify the number of potassium atoms relative to oxygen, which is why "Dipotassium oxide" is preferred.
• Potassium Oxygen
  • This name is incorrect because it does not follow the IUPAC naming conventions for chemical compounds.
  • It suggests a bond between potassium and oxygen but does not specify the stoichiometry or ionic nature of the compound.
• Dipotassium oxygen
  • This name is incorrect because it implies that oxygen is the central atom, which is not accurate for K₂O.
  • The correct name focuses on the oxide ion (O^2-) and the two potassium ions (K⁺).

The Correct answer is Ease the process of cooking.

Key Points

• Salt is an essential ingredient in cooking because it helps to enhance the flavor of food and aids in the cooking process.
• It plays a role in softening vegetables and meats, thereby making them easier to cook.
• Salt breaks down cell walls in food, which allows for quicker heat penetration and speeds up the cooking process.
• It also helps in retaining moisture in certain dishes, ensuring better texture.
• Additionally, salt can act as a preservative in food preparation, preventing spoilage and bacterial growth.
• In baking, salt helps control fermentation and strengthens the gluten structure in dough, which is crucial for maintaining the desired texture of baked goods.

Additional Information

• Increase the solubility of food particles in water
  • Salt does not primarily increase the solubility of food particles in water but rather enhances flavor.
  • While salt can dissolve in water, its role is more significant in seasoning and the cooking process.
• Makes the taste of food better
  • Though salt does improve the taste of food, its primary use is not limited to taste enhancement.
  • It has a broader function in cooking, including aiding in texture and preservation.
• Produce in small amounts the hydrochloric acid required for digestion
  • Salt contains sodium chloride (NaCl), which is crucial for maintaining electrolyte balance in the body.
  • However, it does not directly produce hydrochloric acid for digestion; that is a function of the stomach lining.

The Correct answer is Nitrous oxide.

Key Points

• Nitrous oxide, commonly known as laughing gas, is a chemical compound with the formula N₂O.
• It is a colorless and non-flammable gas with a slightly sweet odor and taste.
• Nitrous oxide is widely used in medicine for its anesthetic and analgesic properties, especially in dentistry and surgery.
• It is also used as a propellant in the food industry, particularly in whipped cream dispensers.
• This gas is known as "laughing gas" because inhaling it can cause euphoria and uncontrollable laughter.
• In addition to its medical applications, it is used in motorsports to enhance engine performance by increasing the oxygen supply.
• Nitrous oxide is a significant greenhouse gas with a global warming potential much higher than carbon dioxide.

Additional Information

• Nitrogen Peroxide
  • Nitrogen Peroxide is more commonly referred to as nitrogen dioxide (NO₂).
  • It is a reddish-brown gas with a characteristic sharp, acrid odor.
  • Nitrogen dioxide is primarily a pollutant produced from combustion processes, such as in vehicle engines and power plants.
  • It contributes to the formation of smog and acid rain and has harmful effects on human health, particularly on the respiratory system.
• Nitric Oxide
  • Nitric oxide (NO) is a colorless gas that plays a crucial role as a signaling molecule in the human body.
  • It is involved in processes such as vasodilation, where it helps regulate blood flow and blood pressure.
  • In the environment, it is produced naturally during lightning storms and is also a byproduct of combustion.
  • Unlike nitrous oxide, nitric oxide is not used as an anesthetic or analgesic.
• Nitrogen Oxide
  • The term nitrogen oxide generally refers to a group of oxides of nitrogen, including NO and NO₂.
  • These gases are significant air pollutants and are collectively referred to as NOₓ.
  • They contribute to environmental issues such as acid rain, smog formation, and the depletion of the ozone layer.

The correct answer is Magnesium hydroxide.

Key Points

• Milk of Magnesia is primarily composed of Magnesium hydroxide, a compound with the formula Mg(OH)₂.
• It is commonly used as an antacid to neutralize stomach acid and relieve indigestion, heartburn, and acid reflux.
• Magnesium hydroxide also acts as an osmotic laxative, drawing water into the intestines and facilitating bowel movements.
• The suspension is white in color and is popularly prescribed for constipation and gastrointestinal discomfort.
• Its action is mild and generally safe for most individuals, making it a widely used over-the-counter medication for digestive issues.

Additional Information

• Magnesium hydroxide:
  • It is a chemical compound classified as a base and sparingly soluble in water.
  • Used not only in medicine but also in industrial applications, such as wastewater treatment to neutralize acids.
• Mechanism of laxative action:
  • Magnesium hydroxide increases the water content in the intestines, softening stool and easing its passage.
  • It is particularly effective in treating short-term constipation.
• Precautions:
  • Prolonged or excessive use can lead to imbalances in electrolytes, particularly magnesium levels.
  • Not recommended for individuals with kidney disorders, as magnesium can accumulate in the body.
• Other uses:
  • Magnesium hydroxide is also employed as a flame retardant and in the manufacture of fertilizers.
  • Its antacid properties make it effective for relieving hyperacidity and associated symptoms.