chemistry

EAMCET PREVIOUS PAPER QUESTIONS FORM CHEMICAL BONDING PART-1

1. The molecule having zero dipole moment is

a) CHCl₃

b) H₂O

c) CCl₄

d) HCl

2. Which of the following covalent molecules is an exception to octet rule?

a) BeCl₂

b) CO₂

c) H₂O

d)CH₄

3. In which of the following compounds, the angle between two covalent bonds is the highest?

a) CH₄

b) NH₃

c) H₂O

d)H₂O₂

4. Which of the following  is more stable?

a) HF

 b) HI

c) HCl

d)HBr

5.The number of sigma bonds in ethane formed by the overlap of sp³ and s-orbitals is

a)5

b)6

c)7

d)4

6. According  to VSEPR theory the shape of water molecule is

a) linear

b) planar triangle

c) angular

d) octahedral

7. The hybridization involved in the six carbon atoms of benzene is

a) three sp³ and three sp²

b) three sp² and three sp

c) all six sp

d) all six sp²

8.Which of the following statements is true for ammonium ion

a) all bonds are ionic

b) all bons are dative bonds

c) H-atoms are situated at the corners of tetrahedron

d) none

9. The effect of repulsion between the two lone pairs of electrons present on oxygen in water molecule is

a) no change in H-O-H  bond angle

b)increase in H-O-H  bond angle

c) decrease in H-O-H  bond angle

d) all atoms will be in one plane

10.The state of hybridization of B in BCl₃ is

a)sp³

b) sp²

c) sp

d) sp³d