Multiple choice question

The ratio among the weight of H 2 and O 2 in H 2 O will be–
(a) 2:8 (b) 2:16 (c) 2:1 (d) None of these
12 Ne dk vkf.od nzO;eku 20-2 ijek.kq nzO;eku bdkbZ (a.m.u.) gSA rc 50-2 xzke
Ne esa ijek.kqvksa dh la[;k gksxhA
(a) 6.023 x 10 23 (b) 6.023 x 10 –23
(c) 1.49 x 10 24 (d) buesa ls dksbZ ugha
Atomic mass of Ne is 20.2 a.m.u. then 50.2 gms of Ne will contain atoms–
(a) 6.023 x 10 23 (b) 6.023 x 10 –23
(c) 1.49 x 10 24 (d) None of these
,d ,d 'kCn@okD; 'kCn@okD; esa esa mRrj mRrj fyf[k;sA fyf[k;sA
fyf[k;sA
,d 'kCn@okD; esa mRrj fyf[k;sA Give answer in one word or sentence.
13 ijek.kq nzO;eku dh ekud bdkbZ gS&
Standard unit of Atomic mass is–
14 O 2 dk xzke v.kq nzO;eku gS
Gram molecular mass of O 2 is–
15 fofHkUu Jksrksa ls izkIr NaCl ds rRo Na rFkk Cl ds e/; lHkh esa Hkkj dh n`f"V
ls vuqikr 23:35.5 izkIr gqvkA bl fu;e ls iqf"V gksrh gSA
NaCl obtained from different sources was found having ratio by weight among
the elements Na and Cl as 23:35.5. Which law is proved by these datas–
16 vkWDlhtu ds Øe'k% 16 vkSj 32 xzke Hkkj N ds 28 xzke Hkkj ls vyx&vyx
2
la;ksx dj nks vkWDlkbM N O ,oa N O cukrs\ buls fdl fu;e dh iqf"V gksrh
2 2 2
gSA
16 and 32 gms of O 2 combine with 28 gm N 2 to form two different oxides
N 2 O and N 2 O 2 which law is proved from these datas?
4