Question

mcqs
1-Atoms having atomic no ____ can form cations
a 20 b 17
c 18 d15
2 In the formation of AlF3 aluminium loses ___ electrons
a 1 b 2 c 3 d 4
3 Identify covalent compound
a Nacl b MgO c H2O d KF
4 - silicon belongs to group 14 it has ____valence electrons
a 2 b 4 c 8 d 14
5-For covalent bonding electronegativity difference must be __ 1.7
a greater b less c equal d variable
6-which of following is polar compound
a O2 b H2 c HF d none
7 - which of following is strong bond
a ionic b metallic c covalent d all
8 -identify compound with triple covalent bond
a CH b C2H2 c CH4 d C2H4
9 -which of following can accept electron pair
a BF3 b H+ c both d none
10-ice floats on water because of ___
a ionicbond b covalent bond c metallic d hydrogen bonding​

Answer 1

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