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
TN 9роЖроорпН ро╡роХрпБрокрпНрокрпБ роЪроорпВроХ роЕро▒ро┐ро╡ро┐ропро▓рпН ро╡ро░ро▓ро╛ро▒рпБ - роЪрпЖро╡рпНро╡ро┐ропро▓рпН роЙро▓роХроорпН роорпБроХрпНроХро┐ропрооро╛рой 2,3,&5 роородро┐рокрпНрокрпЖрогрпН ро╡ро┐ройро╛роХрпНроХро│рпН ро╡ро┐роЯрпИроХро│рпБроЯройрпН TN 9th Social Science HIS - The Classical World 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 - 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: 26/07/2018
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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.
Data processing involves________ steps
seven
four
six
eight
2.
Force involved in uniform circular motion is given by _____________.
f = mv2/r
f = mvr
f = mr2/v
f = v2/r
3.
During ecdysis which of the following is shed off
Chitin
Mantle
Scales
Operculum
4.
The nutrient required in trace amounts to accomplish various body functions is ____________.
Carbohydrate
Protein
Vitamin
Fat
5.
The non-directional movement of a plant part in response to temperature is called ________.
thermotropism
Thermonasty
chemotropism
thigmonasty
6.
A real and enlarged image can be obtained by using a
convex mirror
plane mirror
concave mirror
7.
The term nucleons refer to
Protons and electrons
only Neutrons
electrons and neutrons
Protons and neutrons
8.
Among the following the odd pair is
8O18,9F19
18Ar40,7N14
14Si30, 15P31
24Cr54, 19K39
9.
_________ is used as reflectors in torchlight.
concave mirror
convex mirror
plane mirror
None of these
10.
The force responsible for drying of clothes in a washing machine is
Centripetal force
Centrifugal force
Gravitational force
Electrostatic force
11.
The tropic movement that helps the climbing vines to find a suitable support is ________.
phototropism
geotropism
thigmotropism
chemotropism
12.
The constituents that form a mixture are also called
Elements
Compounds
Alloys
Components
13.
The physical state of water at 373 K is
Solid
liquid
vapour
plasma
14.
1 metric ton is equal to
100 quintals
10 quintals
1/10 quintals
1/100 quintals
15.
Choose the correct one
mm < cm < m < km
mm > cm > m > km
km < m < cm < mm
mm > m > cm > km
16.
Dehydration is based on the principle of removal of ____________.
17.
The binomial name of our National Bird is ______________.
18.
All distances parallel to the principal axis are measured from the ____________ of the mirror
19.
The raw materials for photosynthesis are _________ and _______.
20.
Total Number of electrons that can be accommodated in an orbit is given by_________.
21.
In petroleum refining, the method of separation used is _______
22.
Hydrotropism : Response towards water Phototropism : ___________
23.
Speed is a ____________ quantity whereas velocity is a ____________ quantity
24.
The shoot system grows upward in response to ___________.
25.
1 kg of rice is weighed by ______
26.
Wings of birds are the modified forelimbs
27.
Bipinnaria is the larva of Mollusca
28.
Vitamin C is a water soluble Vitamin
29.
Photosynthesis is important in releasing oxygen to keep the atmosphere in balance.
30.
The convex mirror always produces a virtual, diminished and erect image of the object.
31.
Electrons have negligible mass and charge.
32.
The velocity – time graph of a particle falling freely under gravity would be a straight line parallel to the x axis
33.
Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.
34.
Name the spherical mirror(s) that has/have
i) Virtual principal focus
ii) Real principal focus
35.
Convert: 300 K into Celsius scale,
36.
A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?
37.
What is the full form of SI system?
38.
How is the reproductive characters of mammals different from those of Aves?
39.
State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.
40.
Explain any two methods of food preservation.
41.
Differentiate data and information.
42.
The speed of a particle is constant. Will it have acceleration? Justify with an example.
43.
Write the need of a standard unit.
44.
Text, number
45.
Iodine
46.
Mirage
47.
Used in hairpin bends in mountains
48.
Ratio of height of image to height of object.
49.
Charge of proton
50.
Roots growing downwards away from light
51.
Shoots growing towards the light
52.
Constant retardation
53.
Motion of a body covering equal distances in equal interval of time
54.
How are vitamins useful to us? Tabulate the sources, deficiency diseases and symptoms of fat soluble vitamins
55.
List out the generations of computer
56.
Calculate the mass of a proton, given its charge = + 1.60 \(\times\)10−19 C charge / mass = 9.58 \(\times\) 107 C kg-1
57.
A train travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of тАТ0.5 ms-2. Find how far the train will go before it is brought to rest?
58.
Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Speed of light in vacuum is 3 × 108 ms-1).
59.
Give an example for the movement plant part which is very quick and can be observed easily
60.
Mention the differences between stomatal and lenticular transpiration
1.
(c)
six
2.
(a)
f = mv2/r
3.
(a)
Chitin
4.
(c)
Vitamin
5.
(b)
Thermonasty
6.
(c)
concave mirror
7.
(d)
Protons and neutrons
8.
(d)
24Cr54, 19K39
9.
(a)
concave mirror
10.
(b)
Centrifugal force
11.
(c)
thigmotropism
12.
(d)
Components
13.
(c)
vapour
14.
(b)
10 quintals
15.
(a)
mm < cm < m < km
16.
( )
water/ moisture content
17.
( )
Pavo cristatus
18.
( )
pole
19.
( )
CO2, H2O and Chlorophyll & Light
20.
( )
2n2
21.
( )
Fractional distillation
22.
( )
response towards sunlight
23.
( )
scalar, vector
24.
( )
Light
25.
( )
common (beam) balance
26.
(a)
27.
(b)
28.
(a)
29.
(a)
30.
(a)
31.
(a)
32.
(b)
33.
(a)
34.
(i) Convex and (ii) Concave
35.
Celsius = K - 273 = 300 - 273 = 27°C.
36.
Dettol diffuse water. So the water turns turbid.
37.
Full form of SI system is "International system of units"
38.
Reproductive characters of mammals differ from those of Aves by
1. The presence of mammary glands.
2. Testes lie outside the body cavity enclosed in scrotal sacs.
3. Alecithal eggs.
4. Fertilization is always internal.
5. They give birth to young ones and feed their youngones with milk.
6. Placenta is a characteristic feature of mammals.
39.
A ray of light going towards the centre of curvature is reflected back along the same path. It is a rule for construction of image formed by spherical mirrors.
40.
1. Drying:
It is the process of removal of water or moisture content in the food. It can be done either by sun-drying (or) vaccum drying or hot air drying. It inhibits the growth of bacteria, yeasts and moulds.
2. Smoking:
In this process, food products like meat and fish are exposed to smoke. The drying action of the smoke tends to preserve the food.
41.
Data is the set of values of qualitative and quantitative variables. The data that is fed to the computer can be text, number or statistics. These data stored in computer memory cannot be used directly. It has to be processed.
Information The information we get or obtain or receive using the data from the computer can be used directly.
42.
The acceleration will be zero. When the speed of a particle is constant, its acceleration which is rate of change of velocity will also be zero since change in velocity will be zero.
43.
i) Standard units give the correct and accurate measurement like length, mass, time etc...
ii) It is not varied from person to person, place to place and object to object. So we need standard unit.
44.
Information
45.
Goitre
46.
Total internal reflection
47.
Convex mirror
48.
Magnification
49.
1.6 x 10-19C
50.
Negative phototropism
51.
Positive phototropism.
52.
53.
54.
Vitamins are vital nutrients, required in minute amounts to perform special functions to maintain a healthy body. It is deficiency in the food it cause many diseases.
| Vitamins | Sources | Deficiency disorders | Symptoms |
|
Vitamin A |
Carrot, papaya leaf vegetable, egg yolk, liver |
Xerophthalmia Nyctalopia(night blindness) |
Dryness of cornea unable to see in the night (dim light) scaly skin |
| Vitamin D |
Egg, liver, diary products, fish, synthesized by the sunlight |
Rickets(in children) |
Bow legs, defective ribs development of pigeon chest. |
| Vitamin E | Wheat wheat, vegetable oil, meat, milk | Sterility in rats, Reproductive abnormalities |
Sterility |
| Vitamin K |
Leafy vegetables, soyabeans, milk | Blood clotting is prevented | Excessive bleeding due to delayed blood clotting. |
55.
Generations of Computer:
| Generation | Digital devices |
|---|---|
| 1940-1956 - I Generation | Vacuum tubes |
| 1956-1963 - II Generation | Transistor |
| 1964-1971 - ill Generation | Integrated circuits |
| 1972-2010 - IV Generation | Micro processors |
| After 2010 - V Generation | Artificial Intelligence |
56.
\(Mass\quad =\quad \frac { Charge }{ Charge/mass } \)
\(=\frac { +1.60\times { 10 }^{ -19 } }{ 9.58\times { 10 }^{ 7 } } =1.670\quad \times \quad { 10 }^{ -27 }kg\)
57.
Speed of the train = 90 kmph
Speed of the train = \(\frac { 90000 }{ 3600 } \)
Speed of the train =\(\frac { 900 }{ 36 } \)=25
Speed of the train = 25 m/s.
V = 25 m/s
a = - 0.5 ms-2
Displacement = \(\frac { V }{ a } =\frac { 25 }{ 0.5 } =\frac { 25 }{ -0.5 } \) = 50 seconds
S = ut + \(\frac { 1 }{ 2 } \)at2
= 25 x 50 - \(\frac { 1 }{ 2 } \) x 0.5 x 502 = 1250 - 625
Distance covered by the train before it is brought to rest = 625 m/s.
58.
Refractive index of glass = 1.5
Speed of light in vacuum = 3 x 108 ms-1
Speed of light in glass = ?
\(c = \frac {\text{Speed of light in vacuum}}{\text{Speed of light in glass}}\)
\(\text{Speed of light in glass }┬а= \frac {\text{Speed of light in vacuum}}{\text{Refractive index of glass}}\)
\(= \frac {3\times10^8}{1.5} =2\times 10^8 ms^-1\)
59.
Mimosa pudica is an example for the movement plant part which is very quick and can be observed easily
60.
| S.No | Stomatal transpiration | Lenticular transpiration |
| 1. | It occurs in leaves | It occurs in barks in woody stem. |
| 2. | Most of water transpired through leaves |
Less amount of water transpired through lenticels |
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
