Netflix Of Education

MCQ Presentation MCQ 1: Which of the following properties of water is NOT primarily due to hydrogen bonding? (A) High specific heat capacity (B) Low density of ice (C) Cohesive nature of liquid water (D) Dissolving ability of polar solutes Explanation - (A), (C), and (D) are all dependent on the extensive network of hydrogen bonds between water molecules. These bonds allow water to absorb and release a significant amount of thermal energy (high specific heat), resist compression (cohesion), and form dipole-dipole interactions with polar solutes for dissolution. - (B) is an exception. Ice floats because the hydrogen bonds create a more open, less dense solid structure compared to the close-packed arrangement in most liquids. Correct Answer: (B) Low density of ice MCQ 2: What primary factor contributes to the high surface tension of water? (A) Its cov...

1) Which process involves the removal of a hydroxyl group (OH) and a hydrogen (H) to join two monomers? A) Hydrolysis B) Polymerization C) Condensation D) Dehydration Previous Explanation Next Condensation reaction involves the removal of a hydroxyl group (OH) from one monomer and a hydrogen (H) from another to join them together. Previous Explanation Next

1) In the absence of hydrogen bonding, what would be the approximate freezing point of water? A) -10°C B) -50°C C) -80°C D) -100°C Previous Explanation Next Without hydrogen bonding, water's freezing point would decrease, estimated to be around -100°C. Previous Explanation Next

Card Undermined تخریب کرنا