Q1 Number of bonding electrons in hydrogen


• 1


• 2


•3


•10

Q2. Is not linear



•CO


•CO2


•NH3


•Becl2

Q3. Ionization energy is directly proportional to

(1 Point)


•Screening effect


•atomic size


•Nuclear charge


•All of these

Q4.P in PH3 is ...........hybridised

(1 Point)


•SP3


•SP


•SP2


•NONE

Q5. Incorrect statement is

(1 Point)


•Molecules are formed by overlapping of atomic orbitals


•S-orbital is directional


•Energy changes during formation of compounds


•Electrons participate in hybridization

Q6. Pie bond is formed by ...........overlapping.

(1 Point)


•s-s


•s-p


•p-p head to head


•p-p sidewise


Q7.Isotones have similar number of

(1 Point)


•Electrons


•protons


•Neutrons


None of these

8.Maximum radius is


•Metallic




•Covalent


•None

9.

Structure of water is

(1 Point)


linear


pyramidal


bent


Trigonal planer

10.

Unit of dipole moment

(1 Point)


micron


metre


debye


All

11.

Oxygen molecule is..........

(1 Point)


dimagnetic


paramagnetic


A or B


Both

12.

Polar molecule is

(1 Point)


O2


N2


H2


alcohol

13.

First Ionization enthalpy of ........is maximum.

(1 Point)


nitrogen


oxygen


both


none

14.

Exception of octet rule

(1 Point)


NH3


SF6


CH4


SiCl4

15.

Ionic solids are ........of electricity

(1 Point)


conductor


insulator


Both


none

16.

MOT was given by

(1 Point)


Hund and Mulliken


Heitlar and London


both


none

17.

AB2L3 has......geometry

(1 Point)


linear


I shaped


V shaped


tetrahedral

18.

Diamond is ..........hybridised

(1 Point)


sp


sp2


sp3


sp3d

19.

Shape of P orbital

(1 Point)


Spherical


dumbbell


double dumbbell


None

20.

Minimum energy orbital is...

(1 Point)


s


p


d


f