Multiple choice question

iz'u&20 ghjk dBksj fdUrq mlh dkcZu dk vi:i xzsQkbV uje gksrk gS\ lajpuk ds
vk/kkj ij dkj.k Li"V djks\
Diamond is hard but other alotrop of carbon graphite is soft. Give reason
based on their structures?
iz'u&21 ljy Ja[kyh; flyhdsV ,oa pØh; flyhdsV dh lajpuk;sa nhft;s\
Give structures for simple chain and cyclic cylicates?
iz'u&22 fuEufyf[kr ds dkj.k nhft;s\
cgqfodYih; cgqfodYih; iz'uA
iz'uA
(a) ghjk dBksj gksrk gS ijUrq xzsQkbV uje] D;ks\
(b) ghjs dk ?kuRo xzsQkbV ds ?kuRo ls vf/kd gS] D;ks\
(c) ghjk fo|qr dk dqpkyd gS fdUrq xzsQkbV lqpkyd] D;ks\
Give reasons for the following–
(a) Diamond is hard but graphite is soft, why?
(b) Density of diamond is greater than graphite, why?
(c) Diamond is bad conductor of electricity but graphite is good conductor?
bdkbZ&13
bdkbZ&13
¼dkcZfud ¼dkcZfud jlk;u&dqN jlk;u&dqN ewyHkwr ewyHkwr fl)kUr½
fl)kUr½
(Carbonic Chemicals)
cgqfodYih; iz'uA Multiple choice question
1 1 vad vad okys okys okys iz'u
iz'u
1 dkcZu rRo esa vla[; ;kSfxd fuekZ.k {kerk dk dkj.k gS&
(a) C rRo vfr fØ;k'khy gksuk (b) bldh v/kkfRod iz+—fr gksuk
(c) C esa fof'k"V Ja[kyu {kerk dk gksuk (d) buesa ls dksbZ ugha
The efficiency of inmmerous carbon compound formation of the C–element
is due to–
(a) C is very reactive (b) Its non metallic nature
(c) Specific catenation power (d) None of these
78