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491.

An atom of sodium loses one electron and chlorine atom accepts one electron. This result the formation of sodium chloride molecule. This type of molecule will be
(a)Coordinate
(b)Covalent
(c)Electrovalent
(d)Metallic bond
Comment
Answer is: C

492.

The incorrect statement about strengths of bond is
(a)Pi bond is weaker than a sigma bond.
(b)Triple bond is stronger than a double bond.
(c)Double bond is weaker than a single bond.
(d)Coordinate covalent bond is weaker than a covalent bond.
Comment
Answer is: C

493.

With reference to Ionic compounds,
1. Ionic compounds are insoluble in alcohol.
2. Ionic compounds in the solid state are good conductor of electricity.
Which of the statement is/are correct.
(a)Only 1
(b)Only 2
(c)Both 1 and 2
(d)Neither 1 nor 2
Comment
Answer is: A

494.

Consider the following statements about ionic bond.
1. Ionic bond comes into existence by the transference of electrons between the participating atoms.
2. The atom losing electron changes into cation while the other atom gaining electron converted into anion.
Which of the statements given above is/are correct?
(a)Only 1
(b)Only 2
(c)Both 1 and 2
(d)Neither 1 nor 2
Comment
Answer is: C

495.

Example of Ionic bond are
(a)NaCl, KCl, MgF2, CaCl2
(b)H2, Cl2, O2, N2, CH2
(c)SO2, SO3, O3
(d)H2O, NH3
Comment
Answer is: A

496.

Consider the following statements
1. Hydrogen bond is the strongest of the intermolecular bonds.
2. All hydrogen bonding molecules have dipole interactions.
Which of the above are correct?
(a)Only 1
(b)Only 2
(c)Both 1 and 2
(d)Neither 1 nor 2
Comment
Answer is: C

497.

Carbon tetrachloride has no net dipole moment because of
(a)Its planar structure
(b)Its regular tetrahedral structure
(c)Similar sizes of carbon and chlorine atoms
(d)Similar electron affinities of carbon and chlorine
Comment
Answer is: B

498.

In ammonia, H-N-H bond angle is
(a)106.7o
(b)109o
(c)104o
(d)180o
Comment
Answer is: A

499.

The bond between two identical non-metallic atom has a pair of electron?
(a)Unequally shared between two atoms
(b)Transferred completely from one atom to another
(c)With identical spins
(d)Equally shared between them
Comment
Answer is: D

500.

Study the following statements.
1. A bond formed by the transfer of electrons between atoms of the element is called ionic bond.
2. A bond formed by sharing of electrons between atoms of the elements is called covalent bond.
Which of the statement given above is/are correct?
(a)Only 1
(b)Only 2
(c)Both 1 and 2
(d)Neither 1 nor 2
Comment
Answer is: C

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