Deck 20 (381 - 400) Flashcards
1
Q
- The strongest bases are hydroxides of:
a. halogens
b. transition metals
c. noble gases
d. group 1 and group 2
A
group 1 and group 2
2
Q
- Give the name to the product of dehydrogenation of propane
A
propene
3
Q
- Write the formula for potassium permanganate
A
KMnO4
4
Q
- PIC
A
5
Q
- The substance that enters a chemical reaction is called a..
A
reactant
6
Q
- Complete the equation:
CH3-CH2-COOH + NH4OH -> ???
A
CH3-CH2-COOH + NH4OH -> CH3-CH2-COONH4 + H2O
7
Q
- PIC
A
8
Q
- Give the corresponding name to the symbol Pb
A
lead
9
Q
- PIC
A
10
Q
- Which of the following pairs is not a conjugate acid-base pair ?
a. H2O and OH-
b. HNO3 and NO3-
c. H3O+ and OH-
d. HCl and Cl-
A
H3O+ and OH-
11
Q
- The formation of proteins, starches and fats from their subunits occurs by a process known as
A
dehydration
12
Q
- Orange juice is a:
a. homogenous mixture
b. heterogenous mixture
c. unsaturated solution
d. compound
A
heterogenous mixture
13
Q
- Lecithin is a:
a. sugar
b. wax
c. amino acid
d. phospholipid
A
phospholipid
14
Q
- The neutralisation of any strong acid and strong base produces mostly ?
A
H2O molecules
15
Q
- The solvent in a vinegar is:
a. wine
b. water
c. acetic acid
d. salt
A
water
16
Q
- 80 g of NaOH is dissolved 2000 ml of solution. Calculate the molar concentration of solution.
Mm(NaOH) = 40 g.mol-1
a. 40 mol.dm-3
b. 82 mol.dm-3
c. 160 mol.dm-3
d. 1 mol.dm-3
A
1 mol.dm-3
17
Q
- The structure below is a(n):
R-NH-R
A
amine
18
Q
- Which of the following quantum numbers describes a āpā orbital in the third energy level ?
a. n = 3, l = 0, m = 0
b. n = 3, l = 1, m = 0
c. n = 3, l = -1, m = 0
d. n = 4, l = 3, m = 0
A
n = 3, l = 1, m = 0
19
Q
- Name the process that converts oils to fats
A
hydrogenation
20
Q
- How many protons and electrons respectively are in Cl- (Z = 17) ?
a. 18, 17
b. 17, 18
c. 17, 16
d. 16, 17
A
17, 18
21
Q
A
