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Worksheets151\175
Total questions: 25
Worksheet time: 13mins
Which one of the following does not have a crystal network structure?
C(diamond)
P4(white)
SO2
P(black)
BP
Which of the following reacts with concentrated nitric acid to produce NO2?
Ag ; Cu
ZnO ; Ba(OH)2
Pt
Ba(OH)2
CuSO4
What are the highest and the lowest oxidation numbers of 15P?
+5; -3
+8; -3
+1; -1
+5; -4
+2: -5
Which statement is wrong for white phosphorus?
It is insoluble in CS2
It is more reactive than red phosphorus
It is poisonous
Its molecular formula is P4
It has a garlic smell
Which forms of the P mineral are the main sources of minerals of phosphorus found in nature?
Ca3(PO4)2
Са3Р2
Na3PO4
Ca(H2PO4)2
KH2PO4
The products of ammonia combustion in an oxygen atmosphere are:
Nitrogen; Water
Nitrous oxide; Water
Nitrogen monoxide; Hydrogen
Nitrogen; Hydrogen
Nitrogen dioxide; Water
In the cold, concentrated sulfuric acid passivates:
Fe
Cu
Ag
S
Hg
Define x, y, and z in a given chain of equations: P→ х P2O5→ y H3PO4→ z Na3PO4
O2; H2O; NaCl
O2; H2O; H2S
H2O; NaCl; SO2
H2O; H2; O2;
O2; H2O; Na
Choose the three strongest acids:
HNO3; H2SO4; HCl
H2SO4; HCl; H2SiO3
HNO3; H2SO4; H2SO3
H3PO4; H2SO4; HCl
HBr; H2S; HCl
In which of the following compounds does the nitrogen atom have +4 oxidation state?
KNO2
NaNO3
NO
NH3
NH2OH
In each of the following statements, one of the groups 4A elements is defined. Identify them.
Has a vast number of compounds
The most abundant in earth's crust
The best electrical conductor
The main element of inorganic chemistry
The basic element of organic chemistry
What's the color of the carbon element (coke)?
Black
White
Green
Blue
Red
How many grams of quicklime can be produced by heating 10 grams of limestone?
5,6
11,2
16,8
22,4
0,56
Which of the following acid is not stored in a glass bottle?
HF
HI
HBr
HC1
HNO3
Which of the following elements are not a member of the carbon family?
Hg
Si
Ge
С
Sn
Which of the following are incorrect?
Carbon dissolves in water
Carbon is used in the steel industry
Printers use carbon substances
Carbon bums in oxygen
Diamond is more expensive than graphite
Which of the following statements are not a use of silicon?
As a cleanser
As a semiconductor
In the manufacture of steel
Used in resins and synthetic rubber
Preparation of silicon polymers
Which of the following compounds do not react with aluminum?
Xe
S
P
HC1
O2
Colour of acid-base indicators in a neutral environment:
Litmus - purple
Litmus - red
Methyl orange - yellow
Phenolphthalein - raspberry
Litmus - blue
Which of the following compounds have a covalent bond in its compounds?
F2
Ва
Al
Al
Ag
Which three of the following metals are more active than aluminum?
Ca; Na; K
Cu; Na; K
Ag ; Cu; Na
Cr; Ag;Cu
Ca; Na; Fe
What are three common compounds of silicon found in nature?
SiO2; Al2SiO3; NaAlSi3O8
SiCl4; Al2SiO3; NaAlSi3O8
SiF4; SiCl4; SiBr4
Na2SiF6; SiO2; Al2SiO3
Al2SiO3; Na2SiF6; SiBr4
Which of the following elements are the metalloids?
В; Si; Ge
Ni; Ga; Al
Na; Si; Ge
В; Si; Al
Na Ni; Ga
What is the color of the sodium ion in the flame test?
Yellow
Green
Red
White
Blue
What is the number of electrons in the outermost shell of the atoms in the alkali metals group?
1
5
4
3
8
