Unit of atomic mass unit

 u (unified)

Names of element found in water

 Hydrogen and oxygen

What is atomic of oxygen

 Two

How many atom remain virgin in one gram atomic mass of a substance

 6.022 × 10²³

What are two things that are represented by Mol

Number and mass

Value of Avogadro number

6.022 × 10²³

How many molecules are there in in 0.1 Mol NH3

 6.022 × 10²²

How many moles are equivalent to 1.8 gram of H2O

 0.1 Mol

Molecular formula of sulphur

S8

In which form do ideal gas remain present in nature

 In atomic form

In which form is Oxygen gas present in nature

 In molecular form

Name the element used as a standard to measure atomic mass

Carbon

Which postulate of Dalton's atomic theory can explain the law of Definite proportion

 Atoms of different elements combine to form compound

Which postulate of Dalton's atomic theory is the result of the law of conservation of mass

 Atoms are indivisible smallest particle that are neither created nor destroyed in chemical reaction

How many atoms are present in a PO³-4 ion

Five

How many atoms are present in a H2S molecule

 Three atoms are present in a H2S molecule

What is meant by the term chemical formula

 Chemical formula of a compound remains symbolic representation of its composition

Formula and name of Potassium Sulphate

Potassium Sulphur and oxygen
K2SO4

Formula of baking powder

Sodium hydrogen carbon and oxygen
NaHCO3

Formula of hydrogen Bromide

HBr

Quick lime

Calcium Oxygen and hydrogen
Chemical formula Can(OH)2

Name of compound represented by the formula CaCO3

Calcium carbonate

Name of compound represented by the formula KNO3

Potassium Nitrate

Name of compound represented by the formula K2SO4

Potassium Sulphate

Name of compound represented by the formula CaCl2

Calcium chloride

Name of compound represented by the formula Al2(SO4)3

Aluminium Sulphate

Formula of water

H2O

Formula of calcium carbonate

CaCO3

formula of copper nitrate

CuNO3

Formula of calcium chloride

CaCl2

Formula of magnesium chloride

MgCl2

formula of sodium sulphide

Na2S

formula of aluminium chloride

AlCl3

formula of aluminium chloride

ALCL3

formula of sodium oxide

Na2o

What is the boiling point of acetone

56.5 degree Celsius

example of solution of gas in water

Solution of oxygen in water

Example of solution of liquid into liquid

Solution of alcohol in water

What is the size of particle in solution

10 to the power minus 8 m ( less than 1 NM)

What is the size of particle of colloidal solution

 Between 10 to the power minus 7m To 10 to the power minus 5 cm (100NM -1 NM)

Colloidal solution example

 Shaving cream smoke in air

Suspension

 Pound water smoke imitated from chimney

Solid SOL

Coloured gemstone milky glass

Gel

Jelly cheese butter

Sol

Milk of magnesia mud

Emulation

Milk face cream

Foam

Shaving cream

Aerosol

 Fog cloud mist

Mixture

 Solid sugar solution coal air blood

Compound

 Calcium carbonate Methane carbon dioxide soap

Element

 Sodium silver tin silicon

Chemical changes

 Rusting of iron cooking of food digestion of food and burning of a candle are chemical changes

Tyndall effect

 Milk and a stretch solutions will show tyndall effect

Pure substance

 Iron hydrochloride acid calcium oxide and mercury are pure substance

Solutions among the mixture

 Sea water and soda water

What type of change is burning of paper and wood

 Chemical change

What type of change is making a fruit salad with raw fruit

 Physical change

What type of change in dissolving common salt in water

 Physical change

What types of change is passing of electric current through water and the water breaking down into hydrogen and oxygen gases

Chemical change

Change is boiling of water to form steam

 Physical change

What type of change in rusting of almirah

Chemical change

Melting of butter in a pan

Physical change

Cutting of trees

 Physical changes

Separation of different pigments from an extract of flower Petals

Chromatography

Separation of fine mud particles suspended in water

Decantation

Separation of wheat grain from husk

 Winnowing

Separation of iron pins from sand

 Magnetic separation

Separation of tea leaves from tea

Filtration

Separation of oil from water

Funnel segregation

Separation of of small pieces of metal in the engine oil of a car

 Filtration

Separation of Ammonium Chloride from a mixture containing sodium chloride and ammonium chloride

 Sublimation

Separation of sodium chloride from its solution in water

 Vaporization

Name the technique to separate Camphor from Salt

 Sublimation

Name the technique to separate salt from seawater

 Vaporization

Name the technique to separate butter from curd

Centrifugation