9th Standard Syllabus & Materials
9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роХрогро┐родроорпН роЖропродрпНродрпКро▓рпИ ро╡роЯро┐ро╡ро┐ропро▓рпН,роорпБроХрпНроХрпЛрогро╡ро┐ропро▓рпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Maths Coordinate Geometry,Trigonometry Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роХрогро┐родроорпН роЕро│ро╡ро┐ропро▓рпН,рокрпБро│рпНро│ро┐ропро┐ропро▓рпН&роиро┐роХро┤рпНродроХро╡рпБ роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Maths Mensuration,Statistics&Probability Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
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NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - родрпКроЯроХрпНроХроХро╛ро▓родрпН родрооро┐ро┤рпНроЪрпН роЪроорпВроХроорпБроорпН рокрогрпНрокро╛роЯрпБроорпНроорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Early Tamil Society and Culture Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - родрпКро┤ро┐ро▒рпНрокрпБро░роЯрпНроЪро┐ роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Industrial Revolution Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роиро╡рпАрой ропрпБроХродрпНродро┐ройрпН родрпКроЯроХрпНроХроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - The Beginning of the Modern AgeImportant 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
Published on: 25/10/2019
Applied Chemistry
Download Tamil Nadu 9th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Chlorinated hydrocarbons are used as
fertilizers
pesticides
food colourants
preservatives
2.
The groups responsible for the colour of an organic compound is called
isotopes
auxochrome
chromogen
chromophore
3.
This type of food protect us from deficiency diseases.
Carbohydrates
Vitamins
Proteins
Fats
4.
The age of a dead animal can be determined by using an isotope of ____________
carbon
iodine
phosphorous
oxygen
5.
The cathode of an electrochemical reaction involves ____________
oxidation
reduction
neutralisation
catenation
6.
1% solution of Iodoform is used as
antipyretic
antimalarial
antiseptic
antacid
7.
One Nanometre is
10-7 metre
10-8 metre
10-6 metre
10-9 metre
8.
______________ Isotope used for the treatment of Blood disorder and Skin disease.
9.
______________ substances are incorporated in fabrics to prevent the growth of bacteria.
10.
_____________ is a chemical used in finger print analysis.
11.
Painkiller drugs are called ___________
12.
____________ is an electrochemical cell which converts electrical energy into chemical change(Reaction).
13.
Animal
14.
Plants
15.
Nanorobotics
16.
Hyperthyroidism
17.
Antipyretics
18.
What is Forensic chemistry related to?
19.
What are called Anaesthetics? How are they classified?
20.
What is Chemotherapy?
21.
What are the characteristics of drugs?
22.
Name various food additives and explain their functions.
23.
Draw the cell diagram of Daniel cell. Give its reactions.
24.
Radioisotope used to find the nature of some reactions are called as radiotracer.
25.
Only redox reactions that take place in a specific device can produce electricity.
26.
Nanoplastics are stable, when they contact with oxygen.
27.
What is balanced diet?
28.
List out the characteristics of 'dye'.
29.
Define a 'Drug'.
1.
(b)
pesticides
2.
(d)
chromophore
3.
(b)
Vitamins
4.
(a)
carbon
5.
(b)
reduction
6.
(c)
antiseptic
7.
(d)
10-9 metre
8.
( )
Phosphoros - 30
9.
( )
Nanoparticle
10.
( )
Ninhydrin
11.
( )
Analgesics
12.
( )
Electrolytic cell
13.
Insulin
14.
Quinine
15.
Cancer cell identification
16.
Iodine -131
17.
Fever
18.
Forensic chemistry applies scientific principles, techniques and methods to investigate a crime.
19.
The drugs which cause loss of sensation are called anaesthetics. They are given to patients when they undergo surgery.
There are two types.
i) General anaesthetics ii) Local anaesthetics
20.
Treatment of certain diseases by destroying the invading organism without damaging the cells of the host, by the use of certain organic compounds is known as Chemotherapy. It is widely used for treating cancer.
21.
1. It should not be toxic.
2. It should not cause any side effects .
3. It should not affect the receptor tissues .
4. It should not affect the normal physiological activities .
5. It should be effective in its action .
6. Chemicals which satisfy the above criteria only are preferred as drugs.
22.
Food additives:
These are the chemicals added to food for specialized functions as a preservatives, colourants, artificial sweeteners, flavour enhancers, Antioxidants.
| Type of additive | Function of the additive | Example |
| Preservatives | They protect food from spoilage by microorganism in storage. | Vinegar, Sodium benzoate, benzoic acid, sodium nitrite |
| Colourants | They give pleasant colours to food | Carotenoids, Anthocyanin, Curcumin |
| Artificial Sweeteners | They add sweet taste to food | Saccharin, Cyclamate |
| Flavor enhancers | They are used to enhance the flavour of food items | Monosodium glutamate, Calcium diglutamate |
| Antioxidants | They prevent the oxidation of food. They protect us against cardiovascular disease. | Vitamin C, Vitamin E, Carotene |
23.
1. In Daniel cell zinc metal acts as anode and copper metal acts as cathode .
2. Aqueous zinc sulphate solution makes the anodic electrolyte. Whereas aqueous copper sulphate solution makes the cathodic electrolyte.
3. Saturated solution of potassium chloride (KCI) acts as salt bridge .
4. At anode, zinc undergoes oxidation losing its electrons .
. Zn(S) тЯ╢ Z2++ 2e- (Oxidation)
5. At cathode, copper ions from cathodic electrolyte gain electrons at the surface of cathode and get reduced to copper metal.
Cu2+ + 2e- тЯ╢ Cu(S)(Reduction)
Net reaction,
Zn + Cu2+ тЯ╢ Zn2+ + Cu(s)
6. Cell potential of Daniel cell is 1.1V
24.
(a)
25.
(a)
26.
(b)
27.
The diet that contain body building, energy giving, protective foods in right proportion for the smooth functioning of the body is called as balanced diet.
28.
1. It should have suitable colour.
2. It should be able to fix itself or be capable of being fixed to the fabric.
3. It should be fast to light.
4. It should be resistant to the action of water, dilute acids and alkalies.
29.
It is a substance or product that is used or intended to be used to modify or explore physiological systems or pathological states for the benefits of the recipient.
9th Standard Syllabus & Materials
9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - рокрогрпНроЯрпИроп роиро╛роХро░ро┐роХроЩрпНроХро│рпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Ancient . Civilisations Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - рокрпБро░роЯрпНроЪро┐роХро│ро┐ройрпН роХро╛ро▓роорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - The Age of Revolutions Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роЗроЯрпИроХрпНроХро╛ро▓ роЗроирпНродро┐ропро╛ро╡ро┐ро▓рпН роЕро░роЪрпБроорпН роЪроорпВроХроорпБроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - State and Society in Medieval India Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
NEW9th Standard
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роЖроЪро┐роп роЖрокрпНрокро┐ро░ро┐роХрпНроХ роиро╛роЯрпБроХро│ро┐ро▓рпН роХро╛ро▓ройро┐ропро╛родро┐роХрпНроХроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - Colonialism in Asia and Africa Important 1 Mark Questions with Answers 2,3,&5 Marks Questions with Answers.
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
