Test

Gases

Joanna van Dyk 7 preguntas 4,0 (5 valoraciones)

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Preguntas del test (7)

1Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).

What is the equation for this reaction?
1. A2H2O2 = O2 +2H2O
2. BH2O2 = 2O + H2
3. C2H2O2 + CO2 = HCO3 + H2 + H2O
2Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).

What is a suitable catalyst for this reaction?
1. AManganese oxide
2. BPhosphorus
3. CSulphur Dioxide
4. DLead Nitrate
3Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).

What is the percentage of oxygen in air at atmospheric pressure
1. A21%
2. B78%
3. C0.04%
4. D1%
4Other elements can combust in oxygen.

Write a balanced equation for the combustion of sulphur.
1. AS + O2 = SO2
2. BS + O2 = SO4
3. CS + O2 = SO + H2O
5SO2 dissolves in rainwater to form an acidic solution.
1. AVerdadero
2. BFalso
6Write a balanced equation for the combustion of hydrogen:

[blank_start]2[blank_end]H2 + O2 = 2[blank_start]H2O[blank_end]
1. A2
2. BH2O
7Select two uses for carbon dioxide:
1. Afizzy drinks
2. Bfire extinguishers
3. Csterilization
4. Dlaughing gas

Descripción: Some mixed exam-like Qs
Autor: Joanna van Dyk
Idioma: English
Visitas: 391
Etiquetas: gcse chemistry igcse chemistry chenistry edexcel gases gcse chemistry matter chemistry gcse
Valoración: 4,0 de 5 · 5 valoraciones
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