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General Chemistry: Atomic Structure, Transition Elements, and Organic Chemistry

Comprehensive chemistry quiz covering atomic structure, quantum mechanics, transition elements, coordination compounds, and organic chemistry including aldehydes, ketones, alcohols, and aromatic substitution reactions.

20 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following has the largest number of molecules?

  1. 54 g of H2O
  2. 88 g of CO2
  3. 54 g of N2O5
  4. 30 g of NH3
  5. 64 g of CH3OH
Question 2 Multiple Choice (Single Answer)

Which of the following statements is/are TRUE?
(1) Total number of orbitals in a shell with principal quantum number ‘n’ is n2.
(2) Azimuthal quantum number determines the orientation of the orbital.
(3) Stark effect is splitting of spectral lines under the influence of electric field.
(4) Zeeman effect is splitting of spectral lines under the influence of magnetic field.

  1. Only 1
  2. Only 1 and 2
  3. Only 1, 3 and 4
  4. Only 2 and 3
  5. Only 2 and 4
Question 3 Multiple Choice (Single Answer)

Which of the following spectral series lies in near infra-red region?

  1. Lyman series
  2. Balmer series
  3. Paschen series
  4. Brackett series
  5. Pfund series
Question 4 Multiple Choice (Single Answer)

Which of the following complexes has normal spinel structure?
P. NiFe2O4
Q. Mn3O4
R. Fe3O4
S. MgAl2O4

  1. Only P and Q
  2. Only P and R
  3. Only Q and R
  4. Only Q and S
  5. Only R and S
Question 5 Multiple Choice (Single Answer)

Which of the following first row transition metal ions has no unpaired electrons?

  1. Fe3+
  2. Zn2+
  3. Cu2+
  4. Co3+
  5. Ni2+
Question 6 Multiple Choice (Single Answer)

Which of the following transition metal ions is diamagnetic?

  1. Sc3+
  2. Ti2+
  3. Cr3+
  4. Ni3+
  5. Cu2+
Question 7 Multiple Choice (Single Answer)

Which of the following are diamagnetic?

  1. C2
  2. N2
  3. O2
  4. F2
  1. Only 1 and 2
  2. Only 1 and 3
  3. Only 2 and 3
  4. Only 2 and 4
  5. Only 1 and 4
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/are FALSE?
P. EDTA is tetradentate.
Q. Porphyrin in heme is hexadentate.
R. Ethylene diamine is bidentate.
S. Sulphite is ambidentate.

  1. Only P and Q
  2. Only P and R
  3. Only P and S
  4. Only Q and R
  5. Only R and S
Question 9 Multiple Choice (Single Answer)

Which of the following transition metals have completely filled 4d-orbital?
P. Niobium
Q. Molybdenum
R. Palladium
S. Cadmium

  1. Only P and Q
  2. Only P and S
  3. Only Q and R
  4. Only Q and S
  5. Only R and S
Question 10 Multiple Choice (Single Answer)

Which of the following transition metal ions have four unpaired electrons?

  1. Cr3+
  2. V3+
  3. Fe2+
  4. Co3+
  1. Only 1 and 2
  2. Only 1 and 3
  3. Only 2 and 3
  4. Only 2 and 4
  5. Only 3 and 4
Question 11 Multiple Choice (Single Answer)

Which of the following substituents are m-directing?

  1. -CHO
  2. -CCl3
  3. -CH3
  4. -NH2
  1. Only 1 and 2
  2. Only 1, 2 and 3
  3. Only 1 and 3
  4. Only 2 and 4
  5. Only 2, 3 and 4
Question 12 Multiple Choice (Single Answer)

The enzyme carbonic anhydrase contains

  1. cobalt
  2. copper
  3. iron
  4. zinc
  5. magnesium
Question 13 Multiple Choice (Single Answer)

Which of the following complexes are diamagnetic in nature?
P. [CoF6]3-
Q. [Fe(CN)6]4-
R. Zn(H2O)6]2+
S. [Cr(H2O)6]3+

  1. Only P and Q
  2. Only P and S
  3. Only Q and R
  4. Only Q and S
  5. Only R and S
Question 14 Multiple Choice (Single Answer)

Which of the following compounds will undergo Cannizzaro reaction?
P. (CH3)3C-CHO
Q. C6H5CHO
R. C6H5CH2CHO
S. CH3CH2CHO

  1. Only P and Q
  2. Only P and R
  3. Only Q and R
  4. Only Q and S
  5. Only R and S
Question 15 Multiple Choice (Single Answer)

Which of the following compounds is the most difficult to undergo electrophilic substitution reaction?

  1. Chlorobenzene
  2. Phenol
  3. Toluene
  4. Nitrobenzene
  5. Bromobenzene
Question 16 Multiple Choice (Single Answer)

Salts of which metal are used in the treatment of gastric ulcers?

  1. Bi
  2. Gd
  3. Au
  4. Sb
  5. Ba
Question 17 Multiple Choice (Single Answer)

Which of the following alcohols reacts the most rapidly with the Lucas reagent?

  1. Methanol
  2. Benzyl alcohol
  3. 2-Methyl-2-butanol
  4. 2-pentanol
  5. Isobutanol
Question 18 Multiple Choice (Single Answer)

Match column – I (compounds) with column – II (C-C bond length)
Column – I 
        </strong>|<strong>Column &#x2013; II</strong>|

|A. Ethane|1. 120 pm|
|B. Ethene|2. 134 pm|
|C. Ethyne|3. 139 pm|
|D. Benzene|4. 154 pm|

  1. A - 1, B - 2, C - 3, D - 4
  2. A - 1, B - 4, C - 2, D - 3
  3. A - 2, B - 4, C - 3, D - 1
  4. A - 4, B - 2, C - 1, D- 3
  5. A - 4, B - 1, C - 2, D - 3
Question 19 Multiple Choice (Single Answer)

In the complexes [Ag(CN)2]-, [Ni(CN)4]2- and[CoCl4]2-, the hybridisation of Ag, Ni and Co atoms are ______________ respectively.

  1. sp, dsp2 and sp3
  2. sp3, dsp2 and sp
  3. dsp2, sp3 and sp
  4. dsp2, sp and sp3
  5. sp3, sp and dsp2
Question 20 Multiple Choice (Single Answer)

Match column – I (catalyst) with column – II (formulae)
Column – I 
        </strong>|<strong>Column &#x2013; II</strong>|

|P. Ziegler-Natta catalyst|1. TiCl4 + Et3Al|
|Q. Wilkinson’s catalyst|2. PtO2|
|R. Adam’s catalyst|3. (Ph3P)3RhCl|
|S. Lindlar’s catalyst|4. Pd-BaSO4 + Sulphur|

  1. P - 1, Q - 2, R - 3, S - 4
  2. P - 1, Q - 3, R - 2, S - 4
  3. P - 2, Q - 4, R - 3, S - 1
  4. P - 2, Q - 3, R - 4, S - 1
  5. P - 4, Q - 3, R - 2, S - 1
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