S3T19:
What is the IUPAC name of terephthalic acid, which has the formula HOOC–C₆H₄–COOH, where the two COOH groups are attached to opposite sides of the benzene ring?
What is the IUPAC name of terephthalic acid, which has the formula HOOC–C₆H₄–COOH, where the two COOH groups are attached to opposite sides of the benzene ring?
Final Results
42%
A. Benzene-1,4-dicarboxylic acid
18%
B. Benzene-1,4-dioic acid
23%
C. Phenyl-1,4-dioic acid
17%
D. 1,4-dibenzoic acid
S1T8:
What is the coordination number of the complex with the formula [Cu(en)₂Cl₂]?
What is the coordination number of the complex with the formula [Cu(en)₂Cl₂]?
Final Results
5%
A. 0
25%
B. 2
26%
C. 4
44%
D. 6
S1T8:
What is the oxidation number of Ni in Ni(CO)₄?
What is the oxidation number of Ni in Ni(CO)₄?
Final Results
51%
A. +4
12%
B. +2
34%
C. 0
3%
D. -4
S1T8:
What is the number of unpaired electrons in Fe after the formation of coordinate bonds in the complex with the formula [Fe(CN)₆]³⁻?
What is the number of unpaired electrons in Fe after the formation of coordinate bonds in the complex with the formula [Fe(CN)₆]³⁻?
Final Results
27%
A. 0
32%
B. 1
30%
C. 4
12%
D. 5
S1T8:
What is the number of unpaired electrons in Fe after the formation of coordinate bonds in the complex with the formula [Fe(H₂O)₆]²⁺?
What is the number of unpaired electrons in Fe after the formation of coordinate bonds in the complex with the formula [Fe(H₂O)₆]²⁺?
Final Results
37%
A. 0
26%
B. 1
30%
C. 4
7%
D. 5
S3T18:
Which of the following is the systematic name of CH₃CH₂CH₂COCH₃?
Which of the following is the systematic name of CH₃CH₂CH₂COCH₃?
Final Results
16%
A. Pentanone
61%
B. Pentan-2-one
2%
C. Pentan-4-one
20%
D. Methyl butanoate
S3T18:
What is the name of CH₃CH₂CHO?
What is the name of CH₃CH₂CHO?
Final Results
19%
A. Propanol
57%
B. Propanal
15%
C. 1-propanal
8%
D. Ethyl aldehyde
S3T15:
What is/are the final organic product(s) formed when C₆H₅CH=CHCHO is heated with KMnO₄, H⁺?
What is/are the final organic product(s) formed when C₆H₅CH=CHCHO is heated with KMnO₄, H⁺?
Final Results
19%
A. C₆H₅COOH
24%
B. C₆H₅CH₂CH₂COOH
46%
C. C₆H₅COOH, HOOC-COOH
11%
D. C₆H₅CH(OH)CH(OH)COOH
S1:
Which of the following statements is absolutely true?
Which of the following statements is absolutely true?
Final Results
35%
A. All elements have neutrons.
18%
B. All non-metals cannot conduct electricity.
22%
C. Atomic size always decreases with increasing proton number.
25%
D. Metallic elements are more abundant than non-metallic elements.
Good morning, students. Let us start revising the S1 syllabus with a simple question.
Which of the following elements does not form an oxide that can react with both acid and alkali?
Which of the following elements does not form an oxide that can react with both acid and alkali?
Final Results
30%
A. Al
16%
B. Ge
34%
C. Si
19%
D. Pb
S1T8:
Which of the following transition elements forms a cation with the lowest oxidation state?
Which of the following transition elements forms a cation with the lowest oxidation state?
Final Results
12%
A. Ti
11%
B. V
23%
C. Ni
54%
D. Cu
S1T8:
Which of the following transition elements forms a cation with the highest oxidation state?
Which of the following transition elements forms a cation with the highest oxidation state?
Final Results
63%
A. Mn
12%
B. V
14%
C. Fe
10%
D. Cr
S1T8:
Which of the following ions is NOT possible?
Which of the following ions is NOT possible?
Final Results
23%
A. Cr³⁺
11%
B. CrO₄²⁻
56%
C. CrO₄⁻
10%
D. Cr₂O₇²⁻
❤1
S1T8:
Which of the following transition elements exhibits the greatest number of oxidation states?
Which of the following transition elements exhibits the greatest number of oxidation states?
Final Results
65%
A. Mn
16%
B. Fe
9%
C. V
10%
D. Cr
S3T18:
Which of the following reagents is not suitable to distinguish ethanal and propanone?
Which of the following reagents is not suitable to distinguish ethanal and propanone?
Final Results
19%
A. [Ag(NH₃)₂]⁺, ⁻OH
21%
B. K₂Cr₂O₇, H⁺
24%
C. Cu²⁺, ⁻OH
36%
D. I₂, NaOH
S3T18:
Which of the following reagents can be used to distinguish benzaldehyde and phenylethanal?
Which of the following reagents can be used to distinguish benzaldehyde and phenylethanal?
Final Results
36%
A. Tollens' reagent
37%
B. Fehling's solution
10%
C. Schiff's reagent
17%
D. Brady's reagent
S3:
Which of the following compounds are the monomers of nylon 6,10?
Which of the following compounds are the monomers of nylon 6,10?
Final Results
30%
A. Hexanedioic acid, Decane-1,10-diamine
36%
B. Decanedioic acid, Hexane-1,6-diamine
15%
C. Decane-1,10-diol, Hexanedioic acid
18%
D. Hexane-1,6-diol, Decanedioic acid
S1:
Which of the following is the electronic configuration of the Fe²⁺ ion?
[Proton no: Fe=26]
Which of the following is the electronic configuration of the Fe²⁺ ion?
[Proton no: Fe=26]
Final Results
22%
A. 1s²2s²2p⁶3s²3p⁶3d⁵4s¹
15%
B. 1s²2s²2p⁶3s²3p⁶3d⁴4s²
12%
C. 1s²2s²2p⁶3s²3p⁶3d⁶4s²
50%
D. 1s²2s²2p⁶3s²3p⁶3d⁶
S1:
X forms an unstable tetrachloride, which decomposes slowly under room conditions.
Which of the following statements is true?
X forms an unstable tetrachloride, which decomposes slowly under room conditions.
Which of the following statements is true?
Final Results
24%
A. X is a non-metal with the general valence electronic configuration ns²np².
17%
B. XO is a thermally unstable compound.
37%
C. XO₂ acts as an oxidising agent when it reacts with hot acid.
23%
D. The +4 oxidation state of X is more stable than the +2 oxidation state.
S1:
Which halogen only exhibits one oxidation state in its compounds?
Which halogen only exhibits one oxidation state in its compounds?
Final Results
13%
A. Br
16%
B. Cl
55%
C. F
16%
D. I