Multiple choice question

cgqfodYih; cgqfodYih; iz'uA
iz'uA
bdkbZ&1
bdkbZ&1
¼ijek.kq ¼ijek.kq lajpuk lajpuk vkSj vkSj jklk;fud jklk;fud jklk;fud voa/ku½
voa/ku½
(Atomic Structure and Chemical Bonding)
cgqfodYih; iz'uA Multiple choice question
1 1 vad vad okys okys okys iz'u
iz'u
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nzO;ekuksa dh rqyuk ds fy;s pquk&
The carbon Isotope which was selected for comparing atomic masses by the
international union of chemists was–
(a) C 14 (b) C 50 (c) C 12 (d) C 70
2 1 eksy dgykrk gS&
(a) ,d xzke v.kq (b) 6.023 x 1023 d.k
(c) 6.023 x 10 –23 v.kq (d) buesa ls dksbZ ugha
One mole is said to be–
(a) One gram mol (b) 6.023 x 10 23 Particles
(c) 6.023 x 10 –23 molecule (d) None of these
3 eksyj nzO;eku ugh dgykrk gS&
(a) 1 xzke v.kq dk nzO;eku (b) ,d eksy dk nzO;eku
(c) 6.023 x 1023 v.kqvksa dk nzO;eku (d) 6.023 x 10 –23 ijek.kq dk nzO;eku
Molar mass is not–
(a) 1 gram atomicular mass (b) Mass of one mole
(c) 6.023 x 10 23 molecular mass (d) 6.023 x 10 –23 Atom’s mass
4 vkWDlhtu dh $2 vkWDlhdj.k voLFkk fuEu esa ls fdl ;kSfxd esa gS&
(a) H O 2 2 (b) H O 2 (c) CO2 (d) OF2 In which compound the oxidation state of oxygen is +2
(a) H 2 O 2 (b) H 2 O (c) CO 2 (d) OF 2
2
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vkoafVr
vad&04
vad&04