MDCAT Chemistry Chapter 9 online mcq test with answers for chapter 9 (Periods)

MDCAT Chemistry Chapter 9 Electrochemistry Online Test

Sr. #	Questions	Answers Choice
1	Octet rule is not allowed in the formation of	NF3 B.CF4 CCI4 PCI5
2	what is the exact value of angle in BF3	90 104.51 119.5 120°
3	pi-bond can be formed by sideways overlap of	s-orbital d-orbital p-orbital sp orbital
4	Total number of valence electrons in phosphonium ion (PH4-) is	8 9 12 10
5	Elements of group IA and IIA are	electronegative neutral electropositive non-metals
6	lonic bond is produced after complete transfer of	nucleus neutrons electrons protons
7	Elements having high ionization potential values are	metals non- metal liquids solid
8	Greater shielding effect corresponds to ionization potential value	greater lesser remain same no effect
9	Energy required to remove electron from an atom	Ionization potential Electronegativity Electropositivity <div>Electron affinity</div>
10	Covalent bonds are	directional Bidirectional Multidirectional Non directional
11	Bonding in MgO is an example of	lonic bond Polar bond Covalent bond Coordination covalent bond
12	A covalent bond may be	100% covalent Partial ionic 100% ionic Both a and b
13	Polarity of a molecule is expressed in terms of	Bond strength Dipole moment Bond length Shape
14	Carbon-Carbon double bond length in C3H6	154 pm 134 pm 120 pm 105 pm
15	Geometry of simple molecule with sp2 hybridization	Triangular planar Trigonal Square planner Pyramidal
16	Which one of the followings has polar covalent bonds hut is overall nom-polar molecule:	HF CO<sub>2</sub> CH<sub>4</sub> N<sub>2</sub>
17	Mostly ionic compounds are produced between elements of group	IA and IIA IB and VIB IA. IIA and VII-A IA and IB
18	Bond will be covalent when electronegativity difference of bonded atom is	Equal to 1.7 between 0.5 to l.7 Greater to 1.7 zero
19	Energy of atom in compound is	Higher than individual atom Lower than individual atom equal to individual atom Impossible to predict

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