Question 1
The properties of alloys can be explained in terms of metals having
- Non-directional bonding
- Delocalised electrons
- Ions of different size
I and II only
I and III only
II and III only
I, II and III
The properties of alloys can be explained in terms of metals having
I and II only
I and III only
II and III only
I, II and III
Which of the following molecules will have the highest boiling point?
CH3CH2CHO
CH3CH2CH2NH2
CH3CH2OCH3
CH3CH2CH2F
What is the correct order of boiling points for the following molecules, from lowest to highest?
CH3F < F2 < CH3CH2F < HF
F2 < CH3F < CH3CH2F < HF
F2 < CH3CH2F < CH3F < HF
HF < CH3CH2F <C H3F < F2
In which of the following processes do hydrogen bonds get broken?
2HBr (g) → H2 (g) + Br2 (g)
C2H6 (l) → 2C (g) + 6H (g)
H2 (l) → H2 (g)
NH3 (l) → NH3 (g)
Hydrogen bonding occurs between molecules of propanal, CH3CH2CHO, and molecules of liquid Y. Which of the following is most likely to be liquid Y?
CH3CO2CH3
CH3OH
CH3COCH3
CH3CHO
Which of the following metals will have the greatest ability to conduct electricity?
Li
Mg
Na
Al
The following statements are all correct. Which of the statements can be explained, in part, by hydrogen bonding?
I and II only
I and III only
II and III only
I, II and III
Hydrogen bonding can occur between propanal, CH3CH2CHO and which other molecule?
CH3COOH
CH3CO2CH3
CH3CH2F
CH3COCH3
Which of the following about dimethylamine, NH(CH3)2 , is correct?
|
Bond angle |
Strongest type of intermolecular force present |
A |
109.5 |
Permanent dipole permanent dipole forces |
B |
109.5 |
London dispersion forces |
C |
107o |
Hydrogen bonding |
D |
105o |
Hydrogen bonding |
Which of the following statements are correct?
I and II only
I and III only
II and III only
I, II and III