S3T18:
Which of the following statements is incorrect?
Which of the following statements is incorrect?
Final Results
22%
A. Both glucose and fructose are reducing sugars.
23%
B. Glucose reacts with fructose to form sucrose, a non-reducing sugar.
16%
C. Glucose is an aldohexose while fructose is a ketohexose.
39%
D. Glucose is soluble in water while fructose is insoluble in water.
S3T18:
Which of the following reagents cannot be used to differentiate between ethanal and propan-2-ol?
Which of the following reagents cannot be used to differentiate between ethanal and propan-2-ol?
Final Results
24%
A. ZnCl₂, HCl
11%
B. Cu²⁺, ⁻OH
45%
C. I₂, NaOH
19%
D. [Ag(NH₃)₂]⁺, ⁻OH
S3T18:
What type of reaction does propanal undergo when it reacts with Tollens' reagent?"
What type of reaction does propanal undergo when it reacts with Tollens' reagent?"
Final Results
12%
A. Addition
20%
B. Condensation
19%
C. Reduction
48%
D. Oxidation
❤2
S3T18:
Which of the following reagents can be used to differentiate ethanal and propanal?
Which of the following reagents can be used to differentiate ethanal and propanal?
Final Results
13%
A. ZnCl₂, HCl
65%
B. I₂, NaOH
9%
C. Cu²⁺, ⁻OH
13%
D. [Ag(NH₃)₂]⁺, ⁻OH
S3T18:
The reaction of carbonyl compounds with Brady's reagent (2,4-dinitrophenylhydrazine) is a type of
The reaction of carbonyl compounds with Brady's reagent (2,4-dinitrophenylhydrazine) is a type of
Final Results
10%
A. addition reaction
11%
B. oxidation reaction
16%
C. reduction reaction
63%
D. condensation reaction
S1T7:
Which of the following combinations has the greatest difference in boiling points?
Which of the following combinations has the greatest difference in boiling points?
Final Results
54%
A. HF, HI
12%
B. HCl, HI
4%
C. HCl, HBr
30%
D. HF, HCl
S1T7:
Which of the following halide salts reacts with concentrated sulphuric acid to produce the most reduced sulphur product?
Which of the following halide salts reacts with concentrated sulphuric acid to produce the most reduced sulphur product?
Final Results
42%
A. KI
19%
B. CaF₂
16%
C. NaBr
23%
D. MgCl₂
S1T7:
Which of the following combinations has the greatest difference in oxidation states of chlorine?
Which of the following combinations has the greatest difference in oxidation states of chlorine?
Final Results
15%
A. HCl, ClO₂
48%
B. HCl, HClO₄
10%
C. NaCl, NaClO
27%
D. NaCl, NaClO₃
S3T19:
Which of the following is the IUPAC nomenclature for HOOC-COOH?
Which of the following is the IUPAC nomenclature for HOOC-COOH?
Final Results
21%
A. Oxalic acid
10%
B. Ethanoic acid
54%
C. Ethanedioic acid
15%
D. Ethane-1,2-dicarboxylic acid
S3T19:
Which of the following is the systematic name for HOOC-CH₂-C(OH)(COOH)-CH₂-COOH?
Which of the following is the systematic name for HOOC-CH₂-C(OH)(COOH)-CH₂-COOH?
Final Results
34%
A. 3-hydroxypentane-1,3,5-trioic acid
34%
B. 3-hydroxypentane-1,3,5-tricarboxylic acid
9%
C. 2-hydroxypropane-1,2,3-trioic acid
23%
D. 2-hydroxypropane-1,2,3-tricarboxylic acid
S3T19:
X is the simplest alkene which undergoes oxidation with hot KMnO₄, H⁺ to form a stable carboxylic acid. Which of the following statements is true?
X is the simplest alkene which undergoes oxidation with hot KMnO₄, H⁺ to form a stable carboxylic acid. Which of the following statements is true?
Final Results
38%
A. X is ethene.
20%
B. Oxidative cleavage doesn't occur during the reaction.
22%
C. An inorganic carbon side product is formed in the reaction.
21%
D. The carboxylic acid formed reacts with ethanol to produce ethyl propanoate.
S3:
H₂O, ⁻CN, and ⁻OH are classified as:
H₂O, ⁻CN, and ⁻OH are classified as:
Final Results
20%
A. electrophile
70%
B. nucleophile
6%
C. free radical
5%
D. Lewis acid
S1:
Which of the following statements is NOT true?
Which of the following statements is NOT true?
Final Results
22%
A. Among the hydrides of halogens, HF has the highest boiling point.
39%
B. Among the oxides of Period 3, SiO₂ has the highest melting point.
14%
C. Among the Period 3 elements, Ar has the lowest melting point.
24%
D. Among the first row transition elements, only Cu has higher electrical conductivity than Ca.
S3:
"The most substituted alkene is the major product of an elimination reaction."
Which rule is related to the above statement?
"The most substituted alkene is the major product of an elimination reaction."
Which rule is related to the above statement?
Final Results
2%
A. Hund's rule
62%
B. Saytzeff's rule
9%
C. Hofmann's rule
27%
D. Markovnikov's rule
S1:
"Electrons occupy degenerate orbitals singly with parallel spins before pairing up."
Which principle or rule is related to the above statement?
"Electrons occupy degenerate orbitals singly with parallel spins before pairing up."
Which principle or rule is related to the above statement?
Final Results
70%
A. Hund's rule
11%
B. Aufbau principle
19%
C. Pauli exclusion principle
0%
D. Heisenberg Uncertainty Principle
S3T16:
2-Phenylbutan-2-ol can be prepared by reacting a Grignard reagent with a carbonyl compound. Which of the following is not the carbonyl compound used?
2-Phenylbutan-2-ol can be prepared by reacting a Grignard reagent with a carbonyl compound. Which of the following is not the carbonyl compound used?
Anonymous Quiz
13%
A. C₆H₅COCH₃
37%
B. CH₃COCH₂CH₃
13%
C. CH₃CH₂COC₆H₅
37%
D. C₆H₅CH₂COCH₃
S1T6:
X has a valence electronic configuration of 4s²4p².
Which of the following statements is NOT true about X?
X has a valence electronic configuration of 4s²4p².
Which of the following statements is NOT true about X?
Anonymous Quiz
38%
A. The valence band and conduction band of X overlap.
29%
B. Both XO and XO₂ are amphoteric oxides.
15%
C. XCl₄ undergoes hydrolysis readily.
18%
D. XO is less stable than XO₂.
S3T18:
Which of the following reagents can be used to differentiate between benzaldehyde and phenylethanone?
Which of the following reagents can be used to differentiate between benzaldehyde and phenylethanone?
Anonymous Quiz
17%
A. H₂N-NH-C₆H₅
28%
B. Cu²⁺, ⁻OH
11%
C. ZnCl₂, HCl
43%
D. I₂, ⁻OH
S1:
Which of the following is the same for Mg⁺ and Mg²⁺?
Which of the following is the same for Mg⁺ and Mg²⁺?
Anonymous Quiz
58%
A. Nuclear charge
17%
B. Shielding effect
9%
C. Number of electrons
16%
D. Effective nuclear charge
S1:
X is a molecular element of Period 3. X reacts directly with oxygen. The oxides of X are soluble in water and produce a weak acid and a strong acid respectively. What is X?
X is a molecular element of Period 3. X reacts directly with oxygen. The oxides of X are soluble in water and produce a weak acid and a strong acid respectively. What is X?
Anonymous Quiz
7%
A. Silicon
43%
B. Sulphur
32%
C. Chlorine
18%
D. Phosphorus