A phenomenon in which an element exists in different modification in same physical state is called

(a)

Isomerism

(b)

Allotropy

(c)

Catenation

(d)

Crystallinity

The carbon atoms in fullerene are arranged in mixed

(a)

Tetragon and Pentagon

(b)

Pentagon and Hexagon

(c)

Hexagon and Heptagon

(d)

Heptagon and Octagon

Carbon forms large number of organic compounds due to

(a)

Allotropy

(b)

Isomerism

(c)

Tetravalency

(d)

Catenation

Which of the following does not contain double bond

(a)

CO₂

(b)

C₂H₄

(c)

HCl

(d)

O₂

Which of the following is highly toxic?

(a)

Carbon dioxide

(b)

Carbon monoxide

(c)

Calcium carbonate

(d)

Sodium bicarbonate

Graphite is used as lubricant in machines because

(a)

it is good conductor of electricity

(b)

it is made of slippery layers and has high melting point

(c)

it has high density

(d)

it is strong and soft

Graphene is one atom thick layer of carbon obtained from

(a)

Diamond

(b)

Fullerene

(c)

Graphite

(d)

Gas Carbon

Plastic resin codes are shown as three chasing arrows in a ______________ with a number in the middle or letters (an acronym of that plastic type).

(a)

Logo

(b)

Recycling symbol

(c)

Square

(d)

Triangle

The legal measures to prevent plastic pollution come under the ___________ Protection Act 1988.

(a)

Forest

(b)

Wildlife

(c)

Environment

(d)

Human Rights

Which Amorphous form of carbon is used in making electrode in dry cell?

(a)

coke

(b)

gas carbon

(c)

lampblack

(d)

charcoal

__________ named carbon.

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Lavoisier

Buckminster Fullerene contains __________ carbon atoms.

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60

There are ____________ plastic resin codes

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7

The latin word __________ meaning coal.

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Carbo

________________ represents the type of polymer used to make the plastic.

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resin code

Carbon present in saturated form of Alkane where it contains single bond.

(a) True

(b) False

Ethane is the first member of the homologous series of Alkanes.

(a) True

(b) False

Resin code 05 is considered as one of the unsafe plastics as it has harmful chemicals.

(a) True

(b) False

The amorphous forms of carbon have high melting and boiling point compared to crystalline forms.

(a) True

(b) False

Alkyne

(1)

Polystyrene

Andre Geim

(2)

Oxidation

C₆₀

(3)

Graphene

Thermocol

(4)

Triple bond

Combution

(5)

Bucky Ball

How many valence electrons are there in carbon?

Who is called 'Father of Modern Organic Chemistry'?

Differentiate graphite and diamond.

What are saturated and unsaturated compounds called?

What is the valency of carbon in carbon monoxide?

What is burning?

Name the three safer resin codes of plastics and describe their features.

Why do carbon exist mostly in combined state?