Which one the following system of units is the British System of unit?

1. CGS

2. MKS

3. FPS

4. SI

Electric current belongs to ______quantities

1. base

2. supplementary

3. derived

4. professional

SI unit of temperature is

1. celsius

2. fahrenheit

3. kelvin

4. ampere

Luminous intensity is the intensity of

1. Laser light

2. UV light

3. visible light

4. IR light

Which one of the following devices is used to measure electric current

1. 

2. 

3. 

4. 

SI unit stands for

1. International system of units

2. Integrated System of units

3. International symbol of units

4. Integrated symbol of units

Closeness of two or more measured values is called as

1. accuracy

2. precision

3. error

4. approximation

Quantities other than base quantities are called as

1. supplementary quantities

2. derived quantities

3. professional quantities

4. energy quantities

Which of the following statements about approximation is wrong?

1. Approximation gives accurate value

2. Approximation simplifi es the calculation

3. Approximation is very useful when little information is available

4. Approximation gives the nearest value only

Pressure exerted by a liquid is increased by

1. the density of the liquid

2. the height of the liquid column

3. Both (a) & (b)

4. None of the above

The value of the atmospheric pressure at sea level is

1. 76 cm of mercury column

2. 760 cm of mercury column

3. 176 cm of mercury column

4. 7.6 cm of mercury column

Which of the following liquids has more viscosity?

1. Grease

2. Water

3. Coconut oil

4. Ghee

The unit of viscosity is

1. N m²

2. poise

3. kg m s^–1

4. no unit

Mirrors having a curved reflecting surface are called as

1. plane mirrors

2. spherical mirrors

3. simple mirrors

4. None of the above

The spherical mirror used as a rear view mirror in the vehicle is

1. concave mirror

2. convex mirror

3. plane mirror

4. None of the above

The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

1. centre of curvature

2. pole

3. principal axis

4. radius curvature

The distance from the pole to the focus is called

1. Pole length

2. focal length

3. principal axis

4. None of the above

Focal length is equal to half of the

1. centre of curvature

2. axis

3. radius of curvature

4. None of the above

The refractive index of water is

1. 1.0

2. 1.33

3. 1.44

4. 1.52

Burning of paper is a______ change.

1. Physical

2. chemical

3. physical & chemical

4. neutral

The burning of matchstick is an example for chemical reaction based on______

1. Contact

2. electricity

3. light

4. catalyst

______ metal undergoes rusting.

1. tin

2. sodium

3. copper

4. iron

Brine is a concentrated solution of ______.

1. Sodium sulphate

2. sodium chloride

3. calcium chloride

4. sodium bromide

Limestone contains ______ mainly.

1. Calcium chloride

2. calcium carbonate

3. calcium nitrate

4. calcium sulphate

Which of the following factor induces electrolysis?

1. Heat

2. light

3. electricity

4. catalysis

In Haber’s process of producing ammonia ______ is used as a catalyst.

1. Nitrogen

2. hydrogen

3. iron

4. nickel

Dissolved gases like sulphur dioxide, nitrogen oxides in rain water causes______

1. Acid rain

2. base rain

3. heavy rain

4. neutral rain

______ is responsible for Global warming.

1. Carbon di oxide

2. methane

3. chlorofluoro carbons

4. all the above

Micro organisms are measured in ______.

1. cm

2. mm

3. micron

4. meter

______ is a prokaryotic micro organisms.

1. Virus

2. algae

3. fungi

4. bacteria

The plant body of algae is called as ______.

1. stem

2. thallus

3. leaf

4. root

Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to

1. Species

2. Genus

3. Class

4. Orders

_________ is an example for colonial form of algae.

1. Oscillatoria

2. Nostac

3. Volvox

4. Chlorella

Floridian starch is a reserve food material of _______

1. Chloroplyceae

2. Phaeophyceae

3. Rhodophyceae

4. Cyanophyceae

The edible mushroom is _________

1. Polyporus

2. Agaricus

3. Pennicillium

4. Aspergillus

Soil erosion is prevented by____________plants.

1. Algae

2. Fungi

3. Bryophytes

4. Pteridophytes

The first vascular cryptogams in land plants are ________.

1. Bryophytes

2. Pteridophytes

3. Gymnosperm

4. Angiosperm

The well-developed sporophytic plant body is seen in

1. Bryophytes

2. Pteridophytes

3. Gymnosperms

4. Angiosperms

Binominal Nomenclature was first introduced in the year of _______

1. 1970

2. 1975

3. 1978

4. 1623

Penicillin is an antibiotic, which is extracted from________

1. Algae

2. Fungi

3. Bryophytes

4. Pteridophytes

__________ is tough and thick white sheath that protect the inner parts of the eye.

1. sclera

2. conjunctiva

3. cornea

4. iris

Maintenance of constant internal environment of the body is known as _________

1. Homeostasis

2. Homeophytes

3. Homeokinesis

4. Homeophilics

In the absence of oxygen, glucose is broken down in to ________.

1. Lactic acid

2. Citric acid

3. Acetic acid

4. Nitric acid

The process of air passing in and out the lungs is called ___________.

1. Inhalation

2. Exhalation

3. Breathing

4. None of these

Osmosis is the movement of water molecules from a ___________.

1. Higher concentration to a region of lower concentration.

2. Lower concentration to a region of higher concentration.

3. Both of these

4. None of these

_______ recognized the need of ‘Standard Units’ for physical quantities.

1.   

_______ is used to measure electric current.

1.   

The uncertainty in measurement is called as _______.

1.    

_______ is the closeness of the measured value to the original value.

1.    

The pressure of a liquid column _____ with the depth of the column.

1.     

The spherical mirror used in a beauty parlour as make-up mirror is ___________.

1.     

It the angle of incidence is 45°, then the angle of reflection is ______.

1.     

Two mirrors are parallel to each other, then the number of images formed is ________.

1.     

Photosynthesis is a chemical reaction that takes place in presence of _________.

1.    

______ is a chemical substance which alters the speed of a chemical reaction.

1.    

______ is the enzyme responsible for browning of vegetables, fruits.

1.    

Bacteria, which have a flagellum at one end is classified as _______.

1.        

Binomial Nomenclature was first introduced by ________

1.     

Agar Agar is obtained from ________ algae.

1.    

__________ is the structural and functional unit of living organisms.

1.     

Browning of some vegetables and fruits is due to tannin formation.

1. True
2. False

Laminaria – Iodins
Nostoc – N₂ fixation
Polysiphonia – Green algae
Rhodophyceae – Fucoxanthin
i) a, b, c 2) c,d c) a, c, d d) a ,b ,c, d

Phyllanthus amarus – Euphorbiaceae
Solomum trilobatum – Solanaceae
Acalypha indica – Malvaceae
Aegle marmelos – Rutaceac
ii) a,b ii) c,d iii) a,b,c d) a,b,d

a) Reticulate / parallel venation, closed seeded plants, sieve tubes are present in phloem.
b) Seeds are open, ovary is not present, gametes are produced in cones.
c) Tracheids are the conducting cells, companion cells not are present in phloem.
d) Trimerous or tetramerous, closed seed, seed with seed coat, bears fruit.
1) a,b 2) b,c 3) e,d 4) a,d

a) In Bryophytes – Gametophytes - Sex organ – Gamete fusion – Zygote - Spore mother cell – spore – Thallus.
b ) In Angiosperm – pollination – fertilization – zygote – new plant.
c) In Gymnosperm – male cone, and female cone – microspore and megaspore – Zygote – new sporophytes plant.
d) In pteridophytes – pollination by wind, fertilization in the presence of water – zygote prothallus, new plant.
1) a, b, c 2) a, b 3) c, d 4) b, d