Lab

Question 1

Two substances used for charring

Answer 1

egg albumin

sugar

Question 2

Two substances used for non-charring

Answer 2

Naphthalene

ethyl alcohol

Question 3

The black substance formed after heating sugar

Answer 3

Carbon

Question 4

What was deposited at the side of the test tube when egg albumin was heated?

Answer 4

moisture

Question 5

The end product for the test of sulfur

Answer 5

PbS

Question 6

color of end product of sulfur

Answer 6

black precipitate

Question 7

The gas evolved after heating egg albumin and soda lime

Answer 7

ammonia NH3

Question 8

Two acids used for the test of Phosphorus

Answer 8

HNO3

H2SO4

Question 9

The end product for the test of phosphorus

Answer 9

ammonium phosphate

(NH4)3PO4

Question 10

Color of the end product of test for phosphorus

Answer 10

yellow precipitate

Question 11

Two halogens used for the test of halogens

Answer 11

Cl

I

Question 12

The process involved when naphthalene was heated

Answer 12

sublimation

Question 13

The process involved when ethyl alcohol was heated

Answer 13

evaporation

Question 14

Color of the flame for the test of halogens

Answer 14

green

Question 15

Two products formed for complete combustion

Answer 15

CO2

H2O

Question 16

Composition of organic compounds

Answer 16

CHON halogens

Question 17

The reaction of the red litmus paper when egg albumin and soda lime was heated

Answer 17

red turned blue

Question 18

substances used in test for nitrogen

Answer 18

egg albumin

soda lime

Question 19

substances used in sulfur test

Answer 19

egg albumin
NaOH
Lead Acetate

Question 20

Two substances used in flammability test

Answer 20

ethyl alcohol

NaOH

Question 21

Two solutes used in solubility test

Answer 21

Naphthalene

NaCl

Question 22

Two solvents used in solubility test

Answer 22

ether

H2O

Question 23

Two products formed in complete combustion of ethyl alcohol

Answer 23

CO2

H2O

Question 24

Chemical formula of ethyl alcohol

Answer 24

C2H5OH

Question 25

Chemical formula of Naphthalene

Answer 25

C10H8

Question 26

Properties of Methane

Answer 26

``` colorless, odorless, tasteless gas lighter than air non polar non-toxic flammable ```

Question 27

MP of Methane

Answer 27

-182.5 degrees celsius

Question 28

shape of Methane

Answer 28

tetrahedral

Question 29

is a product of decomposition of organic matter and of the carbonization of coal

Answer 29

Methane

Question 30

used as a fuel and a starting material in chemical synthesis

Answer 30

Methane

Question 31

simplest alkane

Answer 31

Methane

Question 32

greenhouse gas associated with global warming

Answer 32

Methane

Question 33

alternative energy source

Answer 33

Methane

Question 34

component of natural gas and also created when animals or municipal waste decomposes

Answer 34

Methane

Question 35

___% Ch4 mixed with air is flammable

Answer 35

1-8

Question 36

The____ the liquid alkanes are highly flammable

Answer 36

lighter

Question 37

Carbon 5 below

Answer 37

flammable

Question 38

MF sodium acetate

Answer 38

CH3COONa

Question 39

reaction of preparation of methan

Answer 39

CH3COONa +NaOh/CaO -> CH4 + Na2CO3

Question 40

ratio of soda lime and sodium acetate

Answer 40

1:3 (5g sodium acetate, 15g soda lime)

Question 41

C_ - down insoluble in water

Answer 41

5

Question 42

method in collecting CH4 gas

Answer 42

water displacement

Question 43

solubility of methane in water

Answer 43

1.013 bar or 2 degrees Celsius

Question 44

water is

Answer 44

polar

Question 45

Water and Methane at room temperature are

Answer 45

insoluble

Question 46

2 halogens used in reaction with methane

Answer 46

Iodine | Bromine

Question 47

color of Iodine

Answer 47

brown

Question 48

color of Bromine

Answer 48

yellow

Question 49

most reactive with CH4

Answer 49

Fluorine

Question 50

controllable reaction with CH4

Answer 50

Chlorine

Question 51

less reactive than F

Answer 51

Bromine

Question 52

does not react

Answer 52

Iodine

Question 53

product of bromine and methan

Answer 53

CH3Br | bromomethane

Question 54

color of solution after bromine is added to methane

Answer 54

light yellow

Question 55

reaction of bromine and methane

Answer 55

substitution reaction | CH4 + Br2 -> CH3Br + HBr

Question 56

color of KMnO4

Answer 56

purple

Question 57

reaction of KMnO4 to methane

Answer 57

no reaction

Question 58

role of KMnO4

Answer 58

oxidizing agent

Question 59

Reaction of Alkanes and Alkenes to oxidizing agent

Answer 59

Alkanes - no reaction | Alkenes - reaction

Question 60

color of the flame produced when the ignited splinter was placed on the tube containing methane gas

Answer 60

blue (non-luminous)

Question 61

Chemical Formula of ethylene

Answer 61

C2H4

Question 62

Two substances used in the laboratory preparation of ethylene

Answer 62

Ethyl alcohol | H2SO4

Question 63

The method used to prepare ethylene in the laboratory

Answer 63

water displacement

Question 64

IUPAC Name of ethylene

Answer 64

ethene

Question 65

Two halogens used in experiment of ethylene

Answer 65

I | Br

Question 66

The role of KMnO4 in the reaction of halogens

Answer 66

oxidizing agent

Question 67

The product formed when ethylene was added with KMnO4

Answer 67

1,2 ethandiol or ethylene glycol

Question 68

Two products formed in the laboratory preparation of ethylene

Answer 68

C2H4 | H2O

Question 69

What is the dehydrating agent used in the preparation of ethylene?

Answer 69

H2SO4

Question 70

The product formed in the reaction of C2H4 and Br2

Answer 70

Br-CH2 - CH2-Br

Question 71

The name of the product of Br2 and C2H4

Answer 71

1,2 dibromoethane

Question 72

Color of precipitate when ethylene was added with lime water

Answer 72

white (cloudy white)

Question 73

The product formed in the reaction of C2H4 and I2

Answer 73

I - CH2 - CH2 - I

Question 74

The name of the product for I2 and C2H4

Answer 74

1,2 diiodoethane

Question 75

The original color of KMnO4

Answer 75

purple

Question 76

The original color of iodine

Answer 76

brown

Question 77

The original color of bromine

Answer 77

yellow

Question 78

Uses of Ethylene

Answer 78

manufacture of plastics manufacture of organic compounds like ethyl alcohol and ethylene glycol used in the artificial ripening of fruits like banana, mango, etc

Question 79

product of Combustion of ethene

Answer 79

CaCo3 + H2O

Question 80

properties of ethene

Answer 80

colorless odorless (not pure) sweetish (pure) insoluble flammable