Covalent bonding, allotropes, hydrocarbons, functional groups, soap and detergents.
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Q1 · Carbon and its Compounds · MEDIUM
Diamond and graphite are two allotropes of carbon. Which of the following statements correctly explains why diamond is the hardest naturally occurring substance while graphite is soft and slippery?
Q2 · Carbon and its Compounds · HARD
A compound has the molecular formula C3H8O. It does not react with sodium metal and does not give a silver mirror with Tollen's reagent. Which functional group is most likely present in this compound?
Q3 · Carbon and its Compounds · EASY
Soaps are sodium or potassium salts of long chain fatty acids. Why do soaps not work well in hard water?
Q4 · Carbon and its Compounds · EASY
Which of the following is a saturated hydrocarbon with the molecular formula C₃H₈?
Q5 · Carbon and its Compounds · MEDIUM
Ethanoic acid reacts with sodium hydroxide to form a salt and water. What is the name of this type of reaction?