Electronegativity and Nature of Bond

Q.

What is the possibility of the value of the difference in electronegativity in carbon dioxide?

1. $>2$

2. $=2$

3. $<2$

4. $<-2$

Q.

In which of the following processes is energy liberated?

1. $Cl\to C{l}^{+}+e^{-}$
2. $HCl\to H^{+}+C{l}^{-}$
3. $O+2e^{-}\to O^{2-}$
4. $Cl+e^{-}\to C{l}^{-}$

Q.

When the difference in electronegativity of two elements in a compound is more than 1.7, what is the nature of the chemical bond?

1. Ionic bond

2. Covalent bond

3. Coordinate bond

4. Hydrogen bond

Q.

When atoms bond with each other , they exchange ________

1. Protons

2. Neutrons

3. Electrons

4. Nucleus

Q.

In order that the force of attraction between two bodies may become noticeable and cause motion, one of the bodies must have

1. An extremely large size

2. An extremely large mass

3. An extremely large density

4. None of the above

Q.

At the microscopic level, there is no gravitational force of attraction between the particles.

1. True
2. False

Q. Polar covalent compounded have two centres of charges due to unequal sharing of electron pair.

1. True
2. False

Q. Which of the following molecules have a coordinate bond in them?

1. $N{H}_4^{+}$
2. $AlC{l}_4^{-}$
3. $H_3{O}^{+}$
4. $N{H}_3.B{F}_3$
5. $A{l}_{2}C{l}_6$
6. $SnC{l}_4$
7. $C_2{H}_6$
8. $O_3$

Q. Which of the following elements do not lose an electron easily?

1. Na
2. F
3. Mg
4. Cl

Q. Which one of the following is the most electropositive element?

1. Sodium
2. Calcium
3. Aluminium
4. Silicon

Q. Identify the lone pair and bond pair.

1. Lone pair
2. Bond pair
3. Bond angle

Q. Match the correct pairs for ammonia molecule.

1. Three
2. Four
3. One