The correct sequence of the polarity of the following molecule is
a. Benzene
b. Inorganic Benzene
c.
d.
a | b | c | d | |
1. | P | NP | NP | P |
2. | NP | NP | NP | P |
3. | NP | P | NP | P |
4. | NP | P | P | NP |
(Where P=polar, NP=non-polar)
The incorrect order of boiling point is-
1.
2.
3.
4.
When the substances Si, KCl, OH and are arranged in order of increasing melting point , what is the correct order?
(1) Si, KCl ,OH ,
(2) , , Si ,KCl
(3) KCl, Si, ,
(4)
Iodine molecules are held in the solid lattice by............
(1) London forces (2) dipole-dipole interactions
(3) Covalent bonds (4) coulombic force
Which substance has the highest melting point ?
(a) CO
(b)
(d)
(d)
Nodal planes of
(1) all are in molecular plane
(2) two in a molecular plane and in a plane peerpendicular to moleclar plane which contains
(3) one in molecular plane and two in plane perpendicular to molecular plane which bisects
(4) two in a molecular plane and one in a plane perpendicular to molecular plane which bisects at right angle.
The hybridisation of the central atom will change when:
1. combines with
2. combines with
3. forms
4. combines with
Which of the following have linkage?
(where X is Central atom)
(i) (ii)
(iii) Pyrosilicate (iv) Hyponitrous Acid
(1) (i) (iii)
(2) (iii) (iv)
(3) (i) (iii) (iv)
(4) (i) (ii)
Which bonds are formed by a carbon atom with - hybridization?
1.
2.
3.
4.