Q.25 Which of the following is molecular solid having strongest hydrogen bonding ?
A) Ice
B) Glucose
C) Ethylene Glycol
D) Iodine
Correct Ans: B
Explanation: The glucose is polar molecular solid having strongest hydrogen bonding due to six -OH groups are present in the each molecule.The molecules of glucose are held together by hydrogen bonding due to the polar -OH groups .The melting point of glucose is higher than ice.The ice is also polar molecular solid with hydrogen bonding but in ice H-bonding is weaker than glucose.The ethylene glycol is a liquid with hydrogen bonding. The H-bonding in ethylene glycol is weaker than glucose.The iodine is non-polar molecular solid with LDF.In I2 H-bonding is absent.
A) Ice
B) Glucose
C) Ethylene Glycol
D) Iodine
Correct Ans: B
Explanation: The glucose is polar molecular solid having strongest hydrogen bonding due to six -OH groups are present in the each molecule.The molecules of glucose are held together by hydrogen bonding due to the polar -OH groups .The melting point of glucose is higher than ice.The ice is also polar molecular solid with hydrogen bonding but in ice H-bonding is weaker than glucose.The ethylene glycol is a liquid with hydrogen bonding. The H-bonding in ethylene glycol is weaker than glucose.The iodine is non-polar molecular solid with LDF.In I2 H-bonding is absent.
No comments:
Post a Comment