Carbon and Its Compounds NCERT Exercise Solution
Part 1
Question 1: Ethane, with the molecular formula C2H6 has
- 6 covalent bonds
- 7 covalent bonds
- 8 covalent bonds
- 9 covalent bonds
Answer: (b) 7 covalent bonds
Question 2: Butanone is a four-carbon compound with the functional group
- carboxylic acid
- aldehyde
- ketone
- alcohol
Answer: (c) ketone
Question 3: While cooking, if the bottom of the vessel is getting blackened on the outside, it means that
- the food is not cooked completely
- the fuel is not burning completely
- the fuel is wet
- the fuel is burning completely
Answer: (b) the fuel is not burning completely
Question 4: Explain the nature of the covalent bond using the bond formation in CH3Cl.
Answer: Carbon has 4 valence electrons. In order to make octet, it shares each of the four electrons with each of the three hydrogen atoms and one chloride atom. Since, bonds are formed because of sharing of electrons, hence these are covalent bonds.
Question 5: Draw the electron dot structures for
(a) Ethanoic acid
Answer:
(b) H2S
Answer:
(c) Propanone
Answer:
(d) F2
Answer:
