Tamil Nadu Class 12 Practical Exam: Check Practical Syllabus - Embibe
  • Written By Anjali Choudhury
  • Last Modified 23-06-2022
  • Written By Anjali Choudhury
  • Last Modified 23-06-2022

Tamil Nadu Board Class 12 Practical Exam: Check Subject-wise Practical Syllabus

Tamil Nadu Class 12 Practical Exam 2022: Tamil Nadu Board Class 12 practical exam was conducted from April 25 to May 2, 2022. The introduction of Class 12 practicals in the syllabus by the Tamil Nadu Board is intended to reinforce that studying for Class 12 is not just about memorisation of theoretical topics. Moreover, Tamil Nadu Class 12 students must pay attention to the practical subjects to score well in the exams.

In courses like Physics, Chemistry, Botany, and Zoology, the Tamil Nadu State Board focuses on enabling students to construct scientific facts based on their everyday knowledge of the world. The goal is to make TN Board Class 12 lessons more action-oriented and engaging. We have provided all the details about the Tamil Nadu Class 12 practical exams of the main subjects in this article so that students can practice the experiments while studying for the exams.

Tamil Nadu Class 12 Practical Exam: Overview

The Tamil Nadu Education Board practical examinations for Class 12 were held from April 25 to May 2, 2022, while the TN Board Class 12 exams were conducted from May 5 to May 28, 2022. The results are expected to be released on June 23, 2022. Before we jump into any further details, let us have an overview of the exam:

Full Exam NameTamil Nadu Higher Secondary Certificate Examination
Short Exam NameTN HSC Board
Conducting BodyDirectorate of Government Examinations
Frequency of ConductOnce a year
Exam LevelIntermediate
LanguagesArabic, German, and More
Mode of ApplicationOffline
Mode of ExamOffline
Exam Duration3 Hours
Tamil Nadu Class 12 Theory DatesMay 5 to May 28, 2022
Tamil Nadu Class 12 Practical DatesApril 25 to May 2, 2022
Officials websitehttps://dge.tn.gov.in/

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TN Board Class 12 Exam Dates 2022

Check the table below to learn about the Tamil Nadu State Board Class 12 exam dates:

Exam DatesSubjects
May 5, 2022Language
May 9, 2022English
May 11, 2022Communicative English, Ethics and Indian Culture, Computer Science, Computer Applications,
Bio-Chemistry, Advanced Language(Tamil), Home Science, Political Science, Statistics
May 13, 2022Accountancy, Chemistry, Geography
May 17, 2022Mathematics, Zoology, Commerce, Micro Biology, Nutrition and Dietetics, Textile & Dress Designing,
Food Service Management, Agricultural Science, Nursing (General), Nursing Vocational
May 20, 2022Economics, Computer Technology, Physics
May 23, 2022Biology, Botany, History, Business Mathematics and Statistics, Basic Electrical Engineering,
Basic Electronics Engineering, Basic Civil Engineering, Basic Automobile Engineering,
Basic Mechanical Engineering, Textile Technology, Office Management and Secretaryship
May 28, 2022Vocational Subjects

Tamil Nadu Board Class 12 Practical Exam 2022

We have put together a list of activities that can be done with the various equipment and resources. These activities assist TN Board students in learning Science more effectively while also encouraging them to pursue a career in the same field.

Students will develop a scientific mentality by practising these experiments, including features such as observation, theory building, experimentation, analysis, assessments, and making conclusions.

Tamil Nadu Class 12 Physics Practical

Physics experiments provide the foundation for Class 12 Science and assist in engaging more students by giving them practical experience. It also helps students in grasping concepts more deeply and effectively. Students should review the experiments and activities from the Tamil Nadu Board Class 12 Physics practicals and prepare for the exams by practicing them.

The experiment is described in the following format in the TN Class 12 Physics practical book:

  • Aim of the experiments
  • Materials required
  • Principle behind the experiment
  • Procedure
  • Observations
  • Calculation
  • Result

The list of experiments in Physics are as follows:

  • Determination of the specific resistance of the material of the given coil using a metre bridge.
  • Determination of the value of the horizontal component of the Earth’s magnetic field using a tangent galvanometer.
  • Determination of the magnetic field at a point on the axis of a circular coil.
  • Determination of the refractive index of the material of the prism by finding the angle of prism and angle of minimum deviation using a spectrometer.
  • Determination of the wavelength of a composite light by normal incidence method using diffraction grating and spectrometer (The number of lines per metre length of the grating is given).
  • Investigation of the voltage-current (V-I) characteristics of a PN junction diode.
  • Investigation of the voltage-current (V-I) characteristics of the Zener diode.
  • Investigation of the static characteristics of a NPN junction transistor in common emitter configuration.
  • Verification of the truth table of the basic logic gates using integrated circuits.
  • Verification of De Morgan’s theorems using integrated circuits.

Practice 12th Tamil Nadu State Board Exam Questions

Tamil Nadu Class 12 Chemistry Practical: List of Experiments

Refer to the table below to understand the preliminary tests performed in Chemistry practicals:

1Odour:
Note the odour of the organic compound.
(i) Fish odour
(ii) Bitter almond odour
(iii) Phenolic odour
(iv) Pleasant fruity odour
(i) May be an amine
(ii) May be benzaldehyde
(iii) May be phenol
May be an ester
2Test with litmus paper:
Touch the moist litmus paper with an organic compound.
(i) Blue litmus turns red
(ii) Red litmus turns blue
(iii) No colour change is noted
(i) May be a carboxylic acid or phenol
(ii) May be an amine
(iii) Absence of carboxylic acid, phenol and amine
3Action with sodium bicarbonate:
Take 2 ml of saturated sodium bi carbonate solution in a test tube. Add 2 or 3 drops (or a pinch of solid) of an organic compound to it.
(i) Brisk effervescence
(ii) No brisk effervescence
(i) Presence of a carboxylic acid.
(ii) Absence of a carboxylic acid.
4Action with Borsche’s reagent:
Take a small amount of an organic compound in a test tube. Add 3 ml of Borsche’s reagent, and 1 ml of Conc HCl to it, then warm the mixture gently and cool it.
Yellow or orange or red precipitatePresence of an aldehyde or ketone
5Charring test:
Take a small amount of an organic compound in a dry test tube. Add 2 ml of conc H2SO4to it, and heat the mixture.
Charring takes place with the smell of burnt sugarPresence of carbohydrate

Tests for Aromatic Nature:

6Ignition test:
Take a small amount of the organic compound in a Nickel spatula and burn it in Bunsen flame.
(i) Burns with sooty flame
(ii) Burns with non sooty flame
(i) Presence of an aromatic compound
(ii) Presence of an aliphatic compound

Tests for an unsaturation:

7Test with bromine water:
Take small amount of the organic compound in a test tube add 2 ml of distilled water to dissolve it. To this solution add few drops of bromine water and shake it well.
(i) Orange – yellow colour of bromine water is decolourised
(ii) No decolourisation takes place
(iii) Decolourisation with formation of white precipitate.
(i) Substance is unsaturated.
(ii) Substance is saturated.
(iii) Presence of an aromatic amine or phenol.
8Test with KMnO4 solution:
Take small amount of the organic compound in a test tube add 2 ml of distilled water to dissolve it. To this solution add few drops of very dilute alkaline KmnO4 solution and shake it well.
(i) Pink colour of KmnO4 solution is decolourised
(ii) No decolourisation takes place
(i) Substance is Unsaturated.
(ii) Substance is unsaturated.

Test for Phenol:

9Neutral FeCl3 test:
Take 1 ml of neutral ferric chloride solution is taken in a dry clean test tube. Add 2 or 3 drops (or a pinch of solid) of organic compound to it. If no colouration occurs add 3 or 4 drops of alcohol.
(i) Violet colouration is seen
(ii) violet – blue colouration is seen
(iii) green colouration is seen
(i) Presence of phenol.
(ii) Presence of α–naphthol
(iii) Presence of β– naphthol

Test for Carboxylic Acids:

10Esterification reaction:
Take 1 ml (or a pinch of solid)of an organic compound in a clean test tube. Add 1 ml of ethyl alcohol and 4 to 5 drops of conc. sulphuric acid to it. Heat the reaction mixture strongly for about 5 minutes. Then pour the mixture into a beaker containing dil. Sodium carbonate solution and note the smell.
A Pleasant fruity odour is noted.Presence of carboxylic group.

Test for aldehydes:

11Tollen’s reagent test:
Take 2 ml of Tollen’s reagent in a clean dry test tube. Add 3-4 drops of an organic compound (or 0.2 g of solid) to it, and warm the mixture on a water bath for about 5 minutes.
Shining silver mirror is formed.Presence of an aldehyde
12Fehling’s test:
Take 1 ml each of Fehling’s solution A and B are taken in a test tube. Add 4-5 drops of an organic compound (or 0.2g of solid) to it, and warm the mixture on a water bath for about 5 minutes.
Red precipitate is formed.Presence of an aldehyde

Test for ketones:

13Legal’s test:
A small amount of the substance is taken in a test tube. 1 ml sodium nitro prusside solution is added. Then sodium hydroxide solution is added dropwise.
Red colouration.Presence of a ketone.

Test for an amine:

14Dye test:
Take A small amount of an organic substance in a clean test tube, add 2 ml of HCl to dissolve it. Add few crystals of NaNO2, and cool the mixture in an ice bath. Then add 2 ml of ice cold solution of β-naphthalene NaOH.
Scarlet red dye is obtained.Presence of an aromatic primary amine

Test for diamide:

15Biuret test:
Take A small amount of an organic compound in a test tube. Heat strongly and then allow to cool. Dissolve the residue with 2 ml of water. To this solution Add 1 ml of dilute copper sulphate solution and few drops of 10% NaOH solution drop by drop.
Violet colour appeared.presence of a diamide

Test for carbohydrates:

16Molisch’s test:
Take A small amount of an organic compound in a test tube. It is dissolved in 2 ml of water. Add 3-4 drops of alpha naphthol to it. Then add conc H2SO4 through the sides of test tube carefully.
Violet or purple ring is formed at the junction of the two liquids.Presence of carbohydrate
17Osazone test:
Take A small amount of an organic compound in a test tube. Add 1 ml of phenyl hydrazine solution and heat the mixture for about 5 minutes on a boiling water bath.
Yellow crystals are obtainedPresence of carbohydrate

Tamil Nadu Class 12 Botany Practical

Botany practicals are very important from an exam point of view of TN Board Class 12 students. It also gives students an overview of the subject. Check the list below to learn about the practical experiments in Botany:

  • Study of permanent slides
  • Microscopic preparation of slides
  • Study of preserved and fresh specimens
  • Section, cutting and mounting
  • Analysing the problem and solving it
  • Physiological experiments, etc.

Tamil Nadu Class 12 Zoology Practical

Below we have provided the list of experiments performed in Zoology practical:

  • To demonstrate the process of fermentation by yeast in the given samples I, II and III.
  • To investigate the colour and pH in the given water samples I, II, and III and thereby determine the quality of water for consumption.
  • Mark the given Wildlife Sanctuary and National Park in the given map of India. Write its location and significance.
  • To assess the distribution of various genetic traits in a given population.
  • To find out the blood group of a class/school students.

FAQs on Tamil Nadu Class 12 Practical Exam 2022

Some of the frequently asked questions on the Tamil Nadu Class 12 practical exam 2022 are mentioned below:

Q.1: Where can I find the practical exam syllabus for Tamil Nadu State Board Class 12?
Ans: Students can find the practical exam syllabus for Tamil Nadu Class 12 on this page.

Q.2: When did the Tamil Nadu Class 12 practical exam take place?
Ans: The TN Board Class 12 practical exam took place from April 25 to May 2, 2022.

Q.3: Is passing TN Board Class 12 practical exam important?
Ans: Yes, students must score in the practical exams because if not, it will lower the entire grade for Class 12th.

Q.4: Can I access the practical exam syllabus for TN Board Class 12 on Embibe?
Ans: Students can easily view the practical exam syllabus for Tamil Nadu Class 12 on Embibe.

Q.5: From where can I download the Tamil Nadu Class 12 timetable?
Ans: Students can download the exam timetable from the official website of the TN Board. The direct link has been provided above.

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