Factors Affected by Hydrogen Bonding

Q. Arrange in increasing order of acid strength.

$HF,HCl,HBr,HI$

1. 

2. 

3. 

4. 

Q.

BeCl₂ exists as a polymer in:

1. Vapour state

2. Solid state

3. All the states

4. Liquid state

Q. All Possible isomers of C6H12O

Q. Which carbocation is more stable? 1) Vinyl carbocation 2) Phenyl carbocation Explain why?

Q. Arrange in decreasing order of boiling point.

$Si{H}_4,Ge{H}_4,Sn{H}_4,C{H}_4$

1. $C{H}_4>Si{H}_4>Ge{H}_4>Sn{H}_4$
2. $Sn{H}_4>Ge{H}_4>Si{H}_4>C{H}_4$
3. $Si{H}_4>Ge{H}_4>Sn{H}_4>C{H}_4$
4. $Ge{H}_4>Sn{H}_4>Si{H}_4>C{H}_4$

Q. Which of the following is the correct decreasing order of boiling points?

1. $HF>HI>HBr>HCl$
2. $HF>HBr>HI>HCl$
3. $HCl>HBr>HI>HF$
4. $HCl>HI>HBr>HF$

Q.

Why Ethers are volatile?

Q. 35 If 1 mol of CH3COOH and 1mol of C2H5OH are mixed and the reaction proceeds to equilibrium, the conc. of CH3COOH and H2O are found to be 1/3 and 2/3 mol respectively. If 1 mol of ethyl acetate and 3 moles of water are mixed, how much ester is present when equilibrium is reached?

Q. 64 What is difference between sec-buty, tert-butyl and iso-butyl

Q. 17. The electronegativity difference between N & F is greater than that between N & H. Yet the dipole moment of NH3 is 1.5D. This is because: 1. In NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3, these are in the same direction. 2. In NH3 as well as in as well as in NF3, the atomic dipole and bond dipole are in the same direction. 3. In NH3 the atomic dipole and dipole at in the same direction whereas in NF3 these are in opposite directions. 4. In NH3 as well as in NF3, the atomic dipole and the bond dipole are in opposite directions.

Q.

Arrange in decreasing order of basicity,

$H_{2}O,O{H}^{-},C{H}_{3}OH,C{H}_3{O}^{-}$

1. $C{H}_{3}OH>C{H}_3{O}^{-}>H_{2}O>O{H}^{-}$

2. $C{H}_3{O}^{-}>O{H}^{-}>H_{2}O>C{H}_{3}OH$

3. $C{H}_3{O}^{-}>O{H}^{-}>C{H}_{3}OH>H_{2}O$

4. $C{H}_{3}OH>C{H}_3{O}^{-}>O{H}^{-}>H_{2}O$

Q.

The compound with the lowest boiling point among the following is:

1. HI

2. HBr

3. HF

4. HCl

Q.

Positive dipole moment is present in

1. HF

2. CCl₄

3. C₆H₆

4. BF₃

Q. The correct order of hydrogen bond strength and boiling point respectively is

1. $HF>H_{2}O,H_{2}O>HF$
2. $HF>H_{2}O,HF>H_{2}O$
3. $H_{2}O>HF,H_{2}O>HF$
4. $HF>H_{2}O,HF=H_{2}O$

Q. Correct order of free radical allylic substitution of following is :- (1)CH3–CH=CH2 (II)(CH3)2CH-CH=CH2 (3)Ph–CH2–CH=CH2 (1) I > II > III (2) III > I > II (3) III > II > I (4) I > III > II

Q. which is more stable CH3-O-CH2+ OR OH-CH2+ ?

Q. 32. How many enols(inclueding sterio isomers) exist for 3-Hexanone ?

Q.

Water has high heat of vaporisation due to

1. Covalent bonding

2. H−bonding

3. Ionic bonding

4. None of the above

Q. if boiling point difference is high between 2 comp. then which distillation we use ? ex.phenol & acetone.

Q. Arrange in decreasing order of boiling point.

$Si{H}_4,Ge{H}_4,Sn{H}_4,C{H}_4$

1. $C{H}_4>Si{H}_4>Ge{H}_4>Sn{H}_4$
2. $Sn{H}_4>Ge{H}_4>Si{H}_4>C{H}_4$
3. $Si{H}_4>Ge{H}_4>Sn{H}_4>C{H}_4$
4. $Ge{H}_4>Sn{H}_4>Si{H}_4>C{H}_4$

Q. Arrange the following types of interactions in order of their increasing stability.

1. van der Waals force<Covalent <Hydrogen bonding
2. Covalent <van der Waals force< Hydrogen bonding
3. Hydrogen < van der Waals force < Covalent bonding
4. van der Waals force < Hydrogen bonding < Covalent

Q.

The maximum number of compounds that have the same net dipole moment is?

$[thedipolemoment\mu ofC-Cl=1.5D]$

(1) $Ph-Cl$

(2)(3)

(4)(5)(6)

1. 2

2. 1

3. 4

4. 3

Q. What characteristics do you except from an electron-deficient hydride with respect to its structure and chemical reactions?

Q.

In solid state BeCl₂ has a:

1. Monomeric structure

2. Covalent structure

3. Bridge structure

4. Polymeric structure

Q. How AlCl3 have 6 electrons in its last shell?

Q. The inter nuclear distance in $H_2$ and $C{l}_2$ molecules are 74 & 198 pm. respectively.The bond length of HCl may be:

1. 136 pm
2. 272 pm
3. 135.919 pm
4. 271.919 pm

Q. An ether is more volatile than an alcohol having the same molecular formula. This is due to:

1. Dipolar character of ethers
2. Alcohols having resonance structures
3. Inter-molecular hydrogen bonding in ethers
4. Inter-molecular hydrogen bonding in alcohols

Q.

$H_{2}S{O}_4$ has higher viscosity than water. Reason being _____

1. Intermolecular H-bonding

2. Intramolecular H-bonding

3. Covalent bonding

4. Ionic nature of

Q. In which of the following geometrical isomerism is possible a)CH_3CH=C(CH_3)_{} b)C_6H_{5 }N=NC_6H_5

Q.

Arrange in increasing order of basicity,

$H_{2}O,O{H}^{-},C{H}_{3}OH,C{H}_3{O}^{-}$

1. 

2. 

3. 

4.