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help in chemistry questions...

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1. Hydrogen bonding can occur between molecules of methanol, HCHO, and molecules of liquid Y. what could liquid Y be ? A. CH3OH B. CH3CHO, C. CH3COCH3, D. CH3CO2CH3

2. Which solid exhibits more than one kind of chemical bonding. A. brass B. copper C. diamond D. ice

3. Which compound has boiling point which is influenced by hydrogen bonding? A. CH3CHO B. CH3OCH3 C. HCO2H D.HCO2CH3

4. HCN reacts with ethanol, CH3CHO. Give the displayed formula of the organic product formed. and what type of reaction is this?

5. describe the type of bonding present in Solid Krypton Kr and Solid Rubidium Rb
 
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1. A as CH3OH has hydrogen atom attached to highly electronegative atom, Oxygen. Note: For Hydrogen bond to occur, Hydrogen must be attached to F(Flourine), O(Oxygen) and N(Nitrogen)
2. D as ice exhibits covalent bond as a single compound and exhibits hydrogen bond between molecules.
3.C as Hydrogen atom is attached to Oxygen atom.
 
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