MCQs

Q361: How does differential thermal analysis (DTA) differ from differential scanning calorimetry (DSC)?

• A) DTA measures changes in temperature while DSC measures changes in heat flow
• B) DTA measures changes in heat flow
• C) while DSC measures changes in temperature

Q362: Which of the following elements is commonly analyzed using flame atomic absorption spectroscopy (FAAS)?

• A) Carbon
• B) Hydrogen
• C) Sodium

Q363: Choose the correct statement: A single chlorine free radical can destroy 10000 ozone molecules f, Ultraviolet radiation from sun cause a reaction that produces ozone, Ozone hole is depletion in total amount of O, All of above

• A) A single chlorine free radical can destroy 10000 ozone molecules f
• B) Ultraviolet radiation from sun cause a reaction that produces ozone
• C) All of above

Q364: The number of amino acids found in proteins that a human body can synthesize is _____?

• A) 23
• B) 10
• C) 14

Q365: One gram of carbohydrate yields energy ______?

• A) 10kcal
• B) 4kcal
• C) 9kcal

Q366: Ascorbic Acid is also known as ______?

• A) Vitamin A
• B) Vitamin B
• C) Vitamin C

Q367: A carbohydrate that cannot be acid hydrolyzed is called _____?

• A) Polysaccharides
• B) Monosaccharides
• C) Disaccharides

Q368: ______ is a technique to separate impurities from chemical products.

• A) Fractional crystallization
• B) Lands berger’s method
• C) Beckmann method

Q369: Salt of weak bases react with strong acid to give _____?

• A) Neutral solution
• B) Basic solution
• C) Acidic solution

Q370: Which of the following oxides is amphoteric in character?

• A) SnO₂
• B) CaO
• C) CO₂