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  1. Problems
  2. /Principles Related to Practical Chemistry

Principles Related to Practical Chemistry

Chemistry

Detecting elements and functional groups in organic compounds, analysing salts for cations and anions, titrations, and preparing standard compounds.

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30 problems
Exam:
Type:
1.
A student prepares iodoform from 2.90 g of propanone (58 g/mol) using iodine, 38.1 g (254 g/mol)… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
2.
A student warms 4.65 g of aniline (93 g/mol) with 6.12 g of acetic anhydride (102 g/mol) and a… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
3.
A student mixes 4.17 g of iron(II) sulphate heptahydrate, FeSO₄· 7H₂O (278 g/mol), with 1.98 g of… New
High School (11–12) · Principles Related to Practical ChemistryStemPy LabStemPy Lab
Easy
4.
A sample of hydrated oxalic acid, H₂C₂O₄· xH₂O, has a mass of 0.630 g… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
5.
A student dissolves 1.96 g of Mohr's salt, FeSO₄(NH₄)₂SO₄· 6H₂O (392 g/mol), in water with a little… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
6.
A student titrates 25.00 mL of oxalic acid of concentration 0.0500 mol/L with potassium… New
High School (11–12) · Principles Related to Practical ChemistryStemPy LabStemPy Lab
Easy
7.
25.00 mL of ethanoic acid of concentration 0.1000 mol/L is titrated with sodium hydroxide of… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
8.
A 1.430 g sample of washing soda, which is sodium carbonate decahydrate, Na₂CO₃· 10H₂O (286 g/mol)… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
9.
A student fills a burette with a sodium hydroxide solution of unknown concentration… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
10.
A student weighs 1.575 g of oxalic acid dihydrate, H₂C₂O₄· 2H₂O (126 g/mol), dissolves it in… New
High School (11–12) · Principles Related to Practical ChemistryStemPy LabStemPy Lab
Easy
11.
Blue crystals are dissolved in water. Sodium hydroxide gives a pale blue precipitate… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
12.
In the group scheme, hydrogen sulphide is bubbled through a solution that holds a metal ion at… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
13.
In group III the analyst adds ammonium hydroxide in excess to a solution that holds magnesium ions… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
14.
A solution holds 0.0200 mol of iron(III) ions… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
15.
A student adds sodium hydroxide, a little at a time and then in excess, to nine different solutions… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
16.
A solution holds seven cations at once: lead(II), copper(II), iron(III), zinc, nickel(II), barium… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
17.
A student warms 1.605 g of ammonium chloride, NH₄Cl, with an excess of sodium hydroxide solution in… New
High School (11–12) · Principles Related to Practical ChemistryStemPy LabStemPy Lab
Easy
18.
A 50.0 mL sample of hard water is acidified with dilute hydrochloric acid and boiled… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
19.
A teaching laboratory holds ten sodium salts: carbonate, sulphide, sulphite, nitrite, acetate… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
20.
A student treats 2.65 g of anhydrous sodium carbonate, Na₂CO₃ (106 g/mol), with an excess of dilute… New
High School (11–12) · Principles Related to Practical ChemistryStemPy LabStemPy Lab
Easy
21.
A teaching laboratory tests ten compounds with four reagents: 2,4-dinitrophenylhydrazine, Tollens'… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedBoard Exam+23StemPy LabStemPy Lab
Hard
22.
A sample of 0.58 g of propanal, CH₃CH₂CHO (58 g/mol), is divided so that the whole amount is tested… New
High School (11–12) · Principles Related to Practical ChemistryBoard ExamAEEE (Amrita)AMUEEE+17StemPy LabStemPy Lab
Medium
23.
Phenol, C₆H₅OH (94 g/mol), reacts with an excess of bromine water and gives a white precipitate of… New
High School (11–12) · Principles Related to Practical ChemistryBoard ExamAEEE (Amrita)AMUEEE+17StemPy LabStemPy Lab
Medium
24.
A student shakes 4.2 g of hex-1-ene, C₆H₁₂ (84 g/mol), with bromine water of concentration 0.20… New
High School (11–12) · Principles Related to Practical ChemistryBoard ExamStemPy LabStemPy Lab
Easy
25.
In the Carius method, 0.1160 g of an organic compound that contains sulphur is heated with fuming… New
High School (11–12) · Principles Related to Practical ChemistryBoard ExamAEEE (Amrita)AMUEEE+17StemPy LabStemPy Lab
Medium
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