Page No. 18-19 Flashcards

1
Q

The liquid portion of blood, a straw coloured fluid with over 90% water content

A

Plasma

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2
Q

A process of passing an electric current through a substance to cause a chemical change

A

Electrolysis

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3
Q

A stirrup shaped bone in the middle year, which is also the smallest bone in the human body

A

Stapes

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4
Q

The instrument which measures both direct and alternating electric current

A

Ammeter

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5
Q

The only element to be found in a liquid state at room temperature

A

Mercury

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6
Q

A toxic gas made up of three molecules of oxygen

A

Ozone

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7
Q

The – tube connects the middle ear with the pharynx and helps the ventilation of the middle ear space in the human body

A

Eustachian

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8
Q

– Is the process of conversion of a substance directly from solid state into gases state without ever passing through the liquid phase

A

Sublimation

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9
Q

– Is carbon dioxide in solid state

A

Dry ice

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10
Q

– Is known as the powerhouse of the cell

A

Mitochondria

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11
Q

The head of the femur bone forms a – joint with the hip

A

Ball and
socket

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12
Q

– Is the plant which has become the main source of biodiesel in India

A

Jatropha

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13
Q

Light is in the form of – radiation

A

Electromagnetic

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14
Q

– Are only found in plant cells, which contain the chlorophyll pigment

A

Chloroplasts

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15
Q

A – is an optical instrument used in warfare, which utilise the properties of reflection of light

A

Periscope

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16
Q

A - is a fertilised egg formed by the fusion of two gametes

A

Zygote

17
Q

The only element that cannot be solidified at normal atmospheric pressure, despite sufficient cooling is

A

Helium

18
Q

Baking soda as the common name of

A

Sodium bicarbonate

19
Q

– Are the principal constituents of petroleum and natural gas

A

Carbon

20
Q

– Is the heat energy obtained from the earths interior

A

Geothermal energy

21
Q

The letter – of the English alphabet is used to represent the magnetic field

A

B