Multiple choice question

19 vk/kqfud vkorZ lkfj.kh fuEu esa ls fdl ij vk/kkfjr gS\
(a) ijek.kq Øekad ij (b) ijek.kq Hkkj ij
(c) la;kstdrk ij (d) ijek.kq vkdkj ij
Out of the following modern periodic table is based–
(a) On atomic number (b) On atomic mass
(c) On valency (d) On atomic size
20 fuEu esa dkSu lcls NksVk /kuk;u gksxk\
(a) Br + (b) Al +3 (c) Ca +2 (d) Na +
Which out of the following will be smallest cation?
(a) Br + (b) Al +3 (c) Ca +2 (d) Na +
4 4 ,oa ,oa ,oa 5 5 vad vad okys okys iz'u iz'u
iz'u
iz'u&21 fuEu ds dkj.k crykb;s&
¼v½ NH dk DoFkukad PH ls vf/kd D;ksa gksrk gS\
3 3
Why the boiling point of NH 3 is greater than PH 3
¼c½ He v.kq D;ksa ugha cukrk gS\
Why He does not form molecule.
iz'u&22 fo|qr la;ksth rFkk lg&la;ksth ;kSfxdksa ds chp fuEu fcUnqvksa ds vk/kkj ij
varj Li"V dhft;s&
(a) fØ;k'khyrk (b) ty esa ?kqyu'khyrk
(c) vk;uhdj.k (d) fo|qr pkydrk
Differentiate among co–valent and electrovalent compounds on the basis of
following points.
(a) Reactivity (b) Solubility in water
(c) Ionization (d) Electrical conductivity
iz'u&23 v.kq d{kd fl)kUr ds izeq[k ik¡p fcUnq fyf[k;sA
Give five main points of molecular orbitals theory?
23