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Carbon and its compounds

Total questions: 56

Worksheet time: 28mins

Name
Class
Date
1.

How many electrons does carbon have in its outermost orbit?

a)

2

b)

3

c)

4

d)

8

2.

What is fullerene?

a)

Crystalline form

b)

Amorphous form

c)

A type of sulphur

d)

A compound of fluorine

3.

What is the molecular formula of ethane?

a)

C2H2

b)

CH4

c)

CH3

d)

C2H6

4.

Which of the following conduct electricity?

a)

Graphite

b)

Diamond

c)

Amorphous Coal

d)

Methane

5.

What is graphite used for?

a)

Lead of pencils

b)

Lubricant

c)

Electrodes

d)

All of the above

6.

An allotrope of carbon is `used as a tip for deep boring drills.

a)

Diamond

b)

Coal

c)

Graphite

d)

All of the above

7.

The type of coal with the highest carbon content.

a)

Lignite

b)

Anthracite

c)

Bituminous coal

d)

sub Bituminous coal

8.

An allotrope of carbon obtained by burning kerosene oil in a limited supply of air.

a)

carbon black

b)

diamond

c)

graphite

d)

coal

9.

A nitrogenous fertilizer is obtained from carbon dioxide.

a)

phosphorous

b)

potassium

c)

urea

d)

nitrogen

10.

The gaseous product is obtained when carbon monoxide is passed over heated iron [II] oxide.

a)

CO2

b)

Nitrogen

c)

water gas

d)

hydrogen

11.

Which of the following compounds of carbon does not consist of ions?

a)

CHCl3

b)

CaCO3

c)

NaHCO3

d)

Ca2C

12.

Which of the following statements about graphite and diamond is true?

a)

They have the same degree of hardness

b)

They have the same electrical conductivity

c)

They can undergo the same chemical reactions

d)

They have the same crystal structure

13.

The purest allotropic form of carbon is

a)

Diamond

b)

Graphite

c)

coal

d)

charcoal

14.

Who formulated the basic structure of co2 and found it to be an - oxide of carbon.

a)

Van Helmont

b)

Joesph Black

c)

Lavoisier

d)

John Dalton

15.

Which has a 2D hexagonal layered structure?

a)

Graphite

b)

Diamond

c)

Fullerene

d)

all of these

16.

Which has the formula C60?

a)

graphite

b)

fullerene

c)

Diamond

d)

lamp black

17.

Carbon is arranged in what shape to make diamond?

a)

Octahedron

b)

Triangle

c)

Hexagon

d)

Tetrahedron

18.

Which of these is not a source of carbon dioxide ?

a)

Respiration

b)

Machine emissions

c)

Burning of fossil fuels

d)

Photosynthesis

19.

what is the name of the compound with the formula ch3ch2ch3?

a)

propane

b)

pentane

c)

methane

d)

ethane

20.

How is pure dry carbon collected?

(a)  

21.

Is carbon dioxide supporter of combustion

a)

Yes

b)

No

22.

Carbon dioxide is (a)   in nature.

23.

Co2 liquifies at

a)

70 atmospheric pressure

b)

90 atmospheric pressure

c)

80 atmospheric pressure

d)

75 atmospheric pressure

24.

the formula of baking soda

(a)  

25.

Which of this is not a symptom of CO poisining

a)

headaches

b)

fever

c)

nausea

d)

fatigue

26.

What does soda acid extinguishers contain

a)

CH₄

b)

H2O

c)

H2SO4

d)

H2So4

27.

CO2 on passage through lime water turns

(a)  

28.

Magnesium burns in CO2 gas depositing

(a)  

29.

Who in 1776 prepared carbon dioxide by heating zinc oxide with wood charcoal

(a)  

30.

What on incomplete combustion releases CO

(a)  

31.

HCOOH ___H2SO4____>

(a)  

32.

Why is H2SO4 added in the laboratory preparation of CO

(a)  

33.

Vapour density of CO

a)

14

b)

15

c)

16

d)

17

34.

CO2 is

a)

poisonous in nature

b)

odorless

c)

colorless

d)

All of the above

35.

Is it okay to sleep in a closed room with a coal fire

a)

Yes

b)

No

36.

Carbogen is a mixture of

a)

95% oxygen & 5% graphite

b)

95% carbon dioxide & 5% oxygen

c)

95% oxygen & 5% carbon dioxide

d)

95% oxygen & 5%coal

37.

Hopclate is a mixture of

a)

50% MnO2,30%CuO,13% CoO0,7%Ag2O

b)

50% MnO2,30%CuO,13% Co,7%Ag2O

c)

50% MnO2,30%CuO,13% CoO,7%Ag2O

d)

50% MnO2,30%CO,13% CoO,7%Ag2O

38.

Carbon monoxides nature

(a)  

39.

CO Is combustible. True or false.

(a)  

40.

equation of CO reacting with Zinc oxide

(a)  

41.

Occurence of diamond is in (a)   state

42.

Formula of limestone is

a)

CaCO3

b)

CACO3

c)

NaCl

d)

NACl

43.

Which of the following is in the Micro-Crystalline state

a)

Diamond

b)

Fullerene

c)

Coke

d)

Graphite

44.

Which allotrope of carbon is built up from a hexagonal unit

(a)  

45.

Graphite is prepared artificially by the thermal decomposition of

(a)  

46.

Which allotrope of carbon in the free state is chemically inert

a)

Diamond

b)

Graphite

c)

Lampblack

d)

Coal

47.

which allotrope is used as a lubricant

(a)  

48.

Which type of coal has the lowest percentage of carbon

a)

anthracite

b)

lignite

c)

bituminous

d)

peat

49.

Which type of coal burns with a smoky flame

a)

Antharcite

b)

peat

c)

bituminous

d)

lignite

50.

What is the formula of water gas

(a)  

51.

What is the formula of producer gas

(a)  

52.

Which amorphous allotrope is used to make black paints

(a)  

53.

Which coal is heated to make coke

(a)  

54.

What is the liquid product obtained from wood charcoal

(a)  

55.

In the experiment where wood charcoal is a reducing agent what are the products obtained in the equation

(a)  

56.

Kajal is obtained from

a)

Lampblack

b)

Coal

c)

Graphite

d)

charcoal

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