Question

CHEMICAL BONDING + REDOX REACTION
1. Two element X and Y have following electronic
configuration :
X = 18. 2s 2p 3s 3p, 4s2 and Y = 152, 2s 2p 3s 3p
The compound formed by combination of X and Y is:
(2) XY (6)
XY, (c) X,Y, (d)XY,
The hybridization in methane, ethene & ethyne
respectively is:
(a) sp. sp and sp (b) sp. sp, sp?
(c) sp. sp' and sp (d) sp?, sp, spº
3. Bond order of N, anion is:
(2) 30 (6) 2.0 «(C) 2.5 (d) 1.5
4. Which is not paramagnetic:
(2) O. (b) 0 (0) 0 ² (d) 0,
If a molecule MX, has zero dipole moment, the sigma
bonding orbitals used by Mare:
• (a) spºd-hybrid
(b) sp-hybrid
(c) spºd hybrids
(d) sp<-hybrid
nce of increasing covalent character is
represent by.
(a) LICI, NaCl, BeCl, (b) BeCl, NaCI, LICI
(c) NaCI. LICI, BeCl, (d) BeCl2, LICI, NaCl
Which one of the following statements is true ?
(a) The dipole moment of NF, is zero
(b) The dipole moment of NF, is less than NH,
f) The dipole moment of NF, is more than NH,
(d) The dipole moment of NF, is equal to NH,
ra
11. Co, is isostructural with:
(a) HgCl2 (b) Snc, (c) CHA (d) NO2
12. H2O has higher boiling point than H S because :
(a) H2O is a smaller molecule and hence more clos
packed.
(b) The bond angle in H,O is more than in H2S and he
the former molecules are more tightly packed.
(c) Present c. intermolecular hydrogen bonding in
liquid H20.
(d) The latent heat of vapourisation is higher for
water than for H,S.
13. Hydrogen bonding is not present in :
-(a) Glycerine
(b) Water
(c) Hydrogen sulphide (d) Hydrogen fluoride
14. In which of the following, bond angle is maximum ?
(a) NH; (b) NHA (c) PCI; (d) SCI,
15. Number of o-bonds in propene:
(a) 6 • (b) 8
(c) 4 (d) 5
16. Which of the following is least volatile ?
(a) HF
(b) HCI (c) HBr • (d) HI
17. Which of the following is not electron deficient ?
(a) NH3 (b) BF; (c) AICI:. (d) BH3
18. The central atom assumes sphybridisation in
(a) PCI (b)SO₃ (C) BF3 (d) NO₂
19. NH, and BF, form an adduct readily because they fo
.(a) an ionic bond
(b) a covalent bond
(c) a coordinate bond (d) a hydrogen bond
20. Which one of the following molecules has the sma
bond angle?
(a) HẠO (b) PH, (c) H2S +(d) HọSe
21. In XeF2, XeF, and XeF, the number of lone pairs of
respectively
•(a) 2,3,1 (b) 1,2,3 (c) 4, 1, 2 (d) 3, 2, 1
22. Which of the following not a correct statement ?
(a) The canonical structure have no real existence.
(b) Every AB, molecule does in fact have square
pyramidal structure.
(c) Multiple bonds are always shorter than the
corresponding single bonds.
(d) The electron deficient mulecules can act as
Lewis acids.
3. Which of the following does not have a coordinate bond
(a) SO, (b) HNO, (c) H2SO; (d) HNO,
According to VSEPR theory, the most probable shape
of the molecule having 4 electron pairs in the outer
shell of the central atom is :
(a) Linear
b) Tetrahedral
(c) Hexagonal
(d) Octahedral
5. Anti-bonding molecular orbital is formed by
(a) Addition of wave functions of atomic orbitals
(b) Subtraction of wave functions of atomic orbitals
(c) Multiplication of wave functions of atomic orbitals
(d) None of these​

Answer 1

Nature of bond -

The elements are Calcium and Chlorine....

"Calcium and Chlorine form an ionicbond in which Calcium donates an electron to Chlorine so that each atom can acquire a full valence shell.Calcium will donate two electrons, each goes to one Chlorine molecule therefore giving the resulting ionic compound a formula of CaCl2."

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