NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 13 & 14)
NTA Abhyas 2020 · Chemistry · p Block Elements (Group 13 & 14)
With respect to graphite and diamond, which of the statement (s)...
With respect to graphite and diamond, which of the statement (s) given below is (are) correct?
Graphite has higher electrical conductivity than diamond
Graphite is harder than diamond
Graphite has higher C - C bond order than diamond
Graphite has higher thermal conductivity than diamond
Graphite has higher electrical conductivity than diamond
Graphite is harder than diamond
Graphite has higher C - C bond order than diamond
Graphite has higher thermal conductivity than diamond
Options
- A1,2
- B1,2,3
- C1,3,4
- D2,3,4
Correct answer
C. 1,3,4
Step-by-step solution
Here 1, 3 and 4 are correct as Graphite has higher electrical and thermal conductivities than diamond.
All C- atoms in graphite are \text{s}{\textp^{2} hybridised so due to partial double bond character in graphite, bond order will be more than 1 but in diamond Bond order is one.
Here only statement 2 is incorrect as diamond is more hard than graphite.
All C- atoms in graphite are \text{s}{\textp^{2} hybridised so due to partial double bond character in graphite, bond order will be more than 1 but in diamond Bond order is one.
Here only statement 2 is incorrect as diamond is more hard than graphite.