Предмет: Русский язык, автор: Викина

В каком слове ударение падает на первый слог:
А) шасси
Б) жалюзи
В) хобби
Г) метро

Ответы

Автор ответа: n1ki1t04ka
1
Хобби (я не могу меньше 20 символов)

Автор ответа: mikaelahyakuya1
1
А) шассИ
Б) жалюзИ
В)хОбби
Г) метрО
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Предмет: Химия, автор: sultanserik04
1.Which row has a only Alkali metals:
A.Li, Na, K, Rb, Cs, Fr
B. Be, Mg, Ca, Sr, Ba, Ra
C. Li, Na, K,Sr, Ba, Ra
D. Mo, Ga, Ra, V, W

2. Which row has a only Alkali earth metals:
A.Li, Na, K, Rb, Cs, Fr
B. Be, Mg, Ca, Sr, Ba, Ra
C. Li, Na, K,Sr, Ba, Ra
D. Mo, Ga, Ra, V, W
3.The oxidation state of alkali metals:
A. 4
B.-4
C. +1
D. +2
4.The oxidation state of alkaliearth metals:
A. 4
B.-4
C. +1
D. +2
5.The atomic radius of alkali and alkaline earth metals by the group from below to the top:
A.remains unchanged
B. Increases
C. Decreases
D. First increases then decreases
6.The metallic property of alkali and alkaline earth metals by the group from top to the bottom:
A.remains unchanged
B. Increases
C. Decreases
D. First increases then decreases
7.What products are formed in the electrolysis process of the melt of sodium chloride:
A. Sodium
B. Chlorine
C. Sodium hydroxide
D. A,B
8. Which alkali metal has a smallest atomic radius:
A. K
B. Na
C. Li
D. Rb
9. Which alkali metal has a biggest electronegativity:
A. K
B. Na
C. Li
D. Rb
10.The most dense alkali metal:
A. K
B. Na
C. Li
D. Rb
11. The gas that releases when Na or Ca reacts with water:
A. Ar
B. CI2
C. H2
D. O2
12.Why some alkali and alkaline earth metals like Na and Ca are stored under the kerosene
A.
B.
C.
D.
13. Which compound causes the temporary hardness of the water:
A.
B.
C.
D.
14. Which ions causes the temporary water hardness :
A.
B.
C.
D.
15. Why the temporary water hardness is removed by boiling:
A.
B.
C.
D.
16.Which group d-elements most prone to passivation by forming oxide film
A.IIIB B. IVB
C. VIB D.B,C

17.Which ion of d-element acts only as a oxidizing agent
A.Mo+3 B.Mn+4
C.Mo+6 D.Fe+2
18.Which ion of d-element can acts as a oxidizing and reducing agent depending on a medium?
A.Mn+2 B.Mo+2
C.Mn+4 D.Mn+7
19.Which metal is not considered as a d-element
A. V
B. Ti
C. Zn
D. Fe
20.Which hydrogen compound is less stable
A. CH4
B. PbH4
C. SiH4
B.GeH4
21.Which one of bellow following reactions is aluminothermy
A)2AI + 3/2O2 = AI2O3 + 1676 kj
B)Cr2O3 + 2AI = 2Cr + AI2O3 + 539kj
C)2AI +3CI2 = 2AICI3
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22. The gas that released , when aluminium is heated with concentrated sulfuric acid:
A) H2
B) SO2
C) H2S
D) NO
23. The gas that released , when aluminium is heated with dilute sulfuric acid:
A) H2
B) SO2
C) H2S
D) NO
24.Which acid at any concentration releases hydrogen gas by reacting with aluminium:
A) Sulfuric acid
B) Hydrochloric acid
C) Nitric acid
D) Phosphoric acid
25.The gas that is released when aluminium reacts with dilute nitric acid:
A) NO2
B) H2
C) NO
D) N2
26.Graphite is applied:
A)in glass cutters
B)for making pencils
C)as a raw material for cement production
D)for the manufacture of confectionery
27.Choose graphite characteristic:
A)hardest known substance
B)has an ionic crystal lattice
C)puts dark traces on paper
28.Choose a characteristic of carbonic acid:
A)weak dibasic acid
B)strong oxidizing agent due to acid residue
C)insoluble in water and does not dissociate
D)solid substance, well soluble in water
29.Choose a property of silicic acid:
A)is a solution of gas in water
B)forms three rows of salts
C)infinitely soluble in water
D)refers to weak insoluble acids
30.Show amphoteric oxide(s)
A) CO2
B) SiO2
C) PbO2
D) SnO2
31.The most less stable compound.
A)CH4;
B)SiH4,
C)GeH4.
D)SnH4,
32.The existence of a single element in the form of several simple substances:
A) polytopy
B) allotropy
C) hydrolysis
D) ammonolysis
33. Which one is electrical conductive
A) diamond
B) graphite
C) Soot
34.Which acid is non-detectable with indicators
A) Carbonic acid
B) silicic acid
C) sulfuric acid
D) nitric acid
35.The number of outer shell electrons on a phosphorus and oxygen atoms
A)6
B)5
C)4
D) 3
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A) nitrogen monoxide
B) nitrogen dioxide
C) nitrogen
B) hydrogen
37.The gas which is released by the concentrated nitric acid when it acts as a oxidizing agent
A) nitrogen monoxide
B) nitrogen dioxide
C) nitrogen
B) hydrogen
38.The gas that is released by all nitrates when they thermally decomposed
A) nitrogen monoxide
B) nitrogen dioxide
C) oxygen
B) hydrogen


40.How many allotropic modifications of the phosphorus
A)1
B)2
C)3
D)4
42. Unstable halogen
A)fluorine,
B)chlorine,
C)bromine
D)iodine
E)astatine
43.The halogen which is liquid under the normal conditions is:
A)fluorine,
B)chlorine,
C)bromine
D)iodine
E)astatine
44.The only oxoacid of chlorine that exists as an individual substance
A) chlorous acid
B) chloric acid
C) perchloric acid
D) hypochlorous acid
45.The number of outer shell electrons on a halogen atoms
A)6
B)5
C)7
D) 3
46.The metal which do not react with concentrated sulfuric acid
A)Cu
B)Fe
C)Hg
D) Ag
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