police AP Police Constable (Pre + Mains) Mock Test 2022 General Science Chemistry Chemical Bond and Molecular Structure
Which of the following statement(s) is/are correct?
(a) CH4 > SiH4 > GeH4
(b) NH3 > PH3 > AsH3
(c) H2O > H2S > H2Se
1
a only
2
a and b
3
b and c
4
a and c