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WorksheetsQUIZ 7 sec 3
Total questions: 25
Worksheet time: 2hrs 5mins
Sulphuric acid is acting as ……….. agent when reaction with NaBr salt and as …….. agent when reacting with iron filings.
Oxidizing – oxidizing
Reducing – reducing
Oxidizing – reducing
Reducing – oxidizing
To reduce smell of hydrogen chloride gas a rod wet ….. is used.
Caustic soda
Sodium sulphate
ammonia solution
Potassium chloride
Scientific idea that used in detection for anions is used to detect some anions. Which anions detection depends on this scientific idea.
Both carbonate & bicarbonate
Both chloride & bromide
Both sulphate & phosphate
Both nitrite & nitrate
Detecting acidic radical of simple salts is depending on acidic effect at …
Salt solution
Molten salt
Molten pure salt
Solid salt itself
4. Which of the following is a precipitating agent?
Sodium sulphate
Ammonium hydroxide
Ammonium chloride
copper sulphate
organic compound is being estimated qualtitively in the form of ……
anions only
cations only
the whole compound
acid radicals only
Ozone gas reacts with potassium iodide solution forming three different products ….. Which of the produced substances turns a paper wetted with starch solution into blue?
Oxygen
iodine
potassium hydroxide
Hydrogen Iodide
Dilute sulphuric acid reacts with each of barium hydroxide solution and barium chloride solution .. What is the similarity between these reactions?
A gas evolves from both reactions
A water insoluble salt is formed from both reactions
the solution produced from both reactions has pH value equal 7
Both reactions produce water
one of the following anions by detecting it in a confirmatory test, color of the indicator is removed it is ……
anions of iodide and phosphate
anions of thiosulphate and sulphate
anions of thiosulphate and nitrite
anions of carbonate and iodide
Magnesium sulphate solution distinguishes between …… anions
Sulphide and chloride
Carbonate and nitrite
Chloride and bromide
Carbonate and bicarbonate
Aqueous solution of ………… dissolves precipitate of silver chloride
HCl
H2SO4
HNO3
NH3
Precipitates of group ……………. is white.
Anions of dil. HCl sol.
Anions of concentrated H2SO4 sol
Anions of barium chloride sol.
All of the previous
……………. Group is the group which contain he anions of the most stable acids.
Anions of diluted hydrochloric acid
Anions of barium chloride solution
Anions of concentrated sulphuric acid
Noble gases
To differentiate between nitrite & nitrate salts, we use …
Dil. HCl
Hot Conc. H2SO4
Acidified KMnO4 solution
All answers are correct
All of the following gases evolves during detect of acidic radicals, except …
Carbon dioxide
Sulphur dioxide
Hydrogen
Hydrogen sulphide
Which of the following don’t give special gasses so it is been detected only in solutions?
Nitrite solution
Thiosulphate anion
Phosphate anion
Chloride anion
……………….. gas is turning a paper wet by acidified orange potassium dichromate into green
SO3
CO2
NO2
SO2
By passing CO2 gas that turbids the clear lime water for a long time ….. is formed.
CaCO3
Ca(HCO3)2
Mg(HCO3)2
H2S
Clear lime water gets turbid when …… is formed
Na2SO4
MgCO3
Ca(HCO3)2
CaCO3
The removal of violet odor of acidified potassium permanganate by adding .......... to it.
strong oxidizing agent
Ammonium solute
reducing agent
oxidizing agent
……………. Can’t form ppt. unless presence of heat source
adding ammonium hydroxide solution to iron III chloride
adding ammonium carbonate solution to sodium bicarbonate
adding hydrochloric acid to silver nitrate
adding magnesium sulphate solution to sodium bicarbonate
ppt. of …….. group have white color
anions of dil. HCl group
anions of conc. H2SO4
anions of barium chloride
all the previous
……………. anion produces bad odor when we test it.
Chloride
Sulphide
phosphate
thiosulphate
Anions of ........ can't be precipitated by barium cations
phosphate
sulphate
phosphate, sulphate
chloride and bromide
By adding excess amount of concentrated sulphuric acid to a mixture of salts ( sodium bromide and sodium chloride) and putting a paper wet with starch solution on the edge of the tube, the paper will ….
Turn into red
Turn into blue
Not changed
be acquired by specific color
