S1T4:
The oxide of X is insoluble in water. It reacts with aqueous sodium hydroxide but not with hydrochloric acid. What is X?
The oxide of X is insoluble in water. It reacts with aqueous sodium hydroxide but not with hydrochloric acid. What is X?
Final Results
20%
A. Al₂O₃
46%
B. SiO₂
8%
C. Al
26%
D. Si
S1T4:
Which of the following elements has the highest melting point?
Note: Only the symbols of the elements are used.
Which of the following elements has the highest melting point?
Note: Only the symbols of the elements are used.
Final Results
13%
A. Mg
15%
B. Al
66%
C. Si
5%
D. S
S1T4 (Quiz):
Which of the following oxides has the highest melting point?
Which of the following oxides has the highest melting point?
Final Results
10%
A. Sodium oxide
15%
B. Magnesium oxide
16%
C. Aluminium oxide
59%
D. Silicon(IV) oxide
S1T4:
X is an ionic compound with significant covalent character. Which of the following is most likely to be X?
X is an ionic compound with significant covalent character. Which of the following is most likely to be X?
Final Results
10%
A. AlF₃
40%
B. AlCl₃
43%
C. Al₂O₃
6%
D. MgCl₂
S1T3:
Which of the following compounds/ions does not contain dative bond?
Which of the following compounds/ions does not contain dative bond?
Final Results
35%
A. CO
33%
B. NH₃
13%
C. NO₃⁻
19%
D. Be₂Cl₄
S3T14:
To which class does the compound with the formula HCOOCH₂CH₃ belong?
To which class does the compound with the formula HCOOCH₂CH₃ belong?
Final Results
50%
A. Ester
10%
B. Carboxyl
10%
C. Carboalkoxy
30%
D. Carboxylic acid
S3T15:
An alkene reacts with hot acidified potassium manganate(VII) solution to produce ethanoic acid and carbon dioxide. Which of the following is the alkene?
An alkene reacts with hot acidified potassium manganate(VII) solution to produce ethanoic acid and carbon dioxide. Which of the following is the alkene?
Final Results
22%
A. CH₂=CHCH₂CH₃
13%
B. (CH₃)₂C=CHCH₃
13%
C. CH₃CH=CHCH₃
51%
D. CH₃CH=CH₂
S3T15:
Which of the following compounds reacts with O₃, followed by (CH₃)₂S to form ethanal and propanone?
Which of the following compounds reacts with O₃, followed by (CH₃)₂S to form ethanal and propanone?
Final Results
42%
A. CH₃CH=C(CH₃)₂
12%
B. CH₂=CHCH₂CH₃
26%
C. CH₃CH₂CH=CHCH₃
20%
D. CH₃CH₂CH=CH(CH₃)₂
❤2
S1T4:
Element X burns vigorously in oxygen to form an oxide that is slightly soluble in water, forming a solid suspension that can be used as an antacid. Which of the following is element X?
Only symbols of elements are used in the options.
Element X burns vigorously in oxygen to form an oxide that is slightly soluble in water, forming a solid suspension that can be used as an antacid. Which of the following is element X?
Only symbols of elements are used in the options.
Final Results
25%
A. Na
68%
B. Mg
3%
C. P
4%
D. Si
S3T15:
A two-step synthetic pathway to 1-bromopropane is shown below:
CH₃CH₂CH₂OH ---> X ---> CH₃CH₂CH₂Br Which of the following is correct?
A two-step synthetic pathway to 1-bromopropane is shown below:
CH₃CH₂CH₂OH ---> X ---> CH₃CH₂CH₂Br Which of the following is correct?
Final Results
12%
A. Step 1 involves the use of HCl.
18%
B. X exhibits geometrical isomerism.
46%
C. Step 2 obeys the anti-Markovnikov rule.
24%
D. X can be oxidised by KMnO₄, ⁻OH to form CH₃COOH.
S1T4:
Which of the following elements exhibits the highest oxidation state in its compounds?
Which of the following elements exhibits the highest oxidation state in its compounds?
Final Results
31%
A. Al
18%
B. Si
19%
C. S
32%
D. Cl
S1T5:
Which of the following is NOT a Group 2 element?
Which of the following is NOT a Group 2 element?
Final Results
11%
A. Ba
7%
B. Be
7%
C. Ca
75%
D. Sc
S3T15:
Which of the following statements is true regarding CH₃CH=C(CH₂CH₃)CH₂CH₂CH₃?
Which of the following statements is true regarding CH₃CH=C(CH₂CH₃)CH₂CH₂CH₃?
Final Results
19%
A. It is called 3-ethylhexene.
21%
B. It does not show geometrical isomerism.
36%
C. It reacts with bromine water to form 2-bromo-3-ethylhexan-3-ol.
24%
D. Oxidation with KMnO₄, H⁺ gives an aldehyde and ketone as final products.
❤2
S1T4:
X is a Period 3 element. There is a small energy gap between its valence band and conduction band. What is X?
X is a Period 3 element. There is a small energy gap between its valence band and conduction band. What is X?
Final Results
7%
A. Boron
70%
B. Silicon
20%
C. Aluminium
4%
D. Phosphorus
S1T5:
Which of the following is true about Group 2?
Which of the following is true about Group 2?
Final Results
33%
A. They form basic oxides.
25%
B. They are called alkaline metals.
5%
C. All Group 2 elements must be kept under paraffin oil.
38%
D. The reducing power increases going down the group.
😢1
S1T4:
Y is a Period 3 element with the highest electrical conductivity. Which of the following statements about Y is not true?
Y is a Period 3 element with the highest electrical conductivity. Which of the following statements about Y is not true?
Final Results
10%
A. Y burns vigorously in oxygen at high temperatures to form an insoluble oxide.
15%
B. The valence band and conduction band of element Y overlap.
35%
C. The oxide of Y can react with both acids and alkalis.
40%
D. Y is an s-block element.
S3T15/21:
Part of the polymer of an alkene is shown below:
-CH(CH₃)C(CH₃)₂-CH(CH₃)C(CH₃)₂- Which of the following statements is not true?
Part of the polymer of an alkene is shown below:
-CH(CH₃)C(CH₃)₂-CH(CH₃)C(CH₃)₂- Which of the following statements is not true?
Final Results
17%
A. The polymer is an addition polymer.
32%
B. The alkene does not exhibit cis-trans isomerism.
34%
C. Ozonolysis of the alkene produces ethanol and propanone.
17%
D. The alkene reacts with O₂, Ag, followed by acidic hydrolysis to form 2-methylbutane-2,3-diol.
S3T15:
A 3-step synthetic pathway to 2-nitrobenzoic acid is shown below:
Benzene ---> P ---> Q ---> 2-nitrobenzoic acid Which of the following is correct?
A 3-step synthetic pathway to 2-nitrobenzoic acid is shown below:
Benzene ---> P ---> Q ---> 2-nitrobenzoic acid Which of the following is correct?
Final Results
17%
A. Q is benzoic acid.
28%
B. Step 1 is nitration.
49%
C. Step 3 requires KMnO₄, H⁺.
6%
D. None of the options A to C is correct.
S3T15:
Methylbenzene undergoes Friedel-Crafts alkylation with chloroethane in the presence of a Lewis acid catalyst to form X and Y. Which of the following is the IUPAC name of X? Suggest the IUPAC name of Y.
Methylbenzene undergoes Friedel-Crafts alkylation with chloroethane in the presence of a Lewis acid catalyst to form X and Y. Which of the following is the IUPAC name of X? Suggest the IUPAC name of Y.
Final Results
18%
A. 2-ethyltoluene
20%
B. 1,2-dimethylbenzene
34%
C. 2-ethylmethylbenzene
27%
D. 1-ethyl-2-methylbenzene
S1T4:
Oxide of Z is soluble in water and forms the second strongest acid among the acids formed by oxides of Period 3. Which of the following is Z?
Oxide of Z is soluble in water and forms the second strongest acid among the acids formed by oxides of Period 3. Which of the following is Z?
Final Results
4%
A. Silicon
50%
B. Sulphur
30%
C. Chlorine
16%
D. Phosphorus
❤2