Hydrogen burns with a ______ flame and ______ sound is heard.

रिक्त स्थान भरें

Hydrogen burns with a pale blue flame and pop sound is heard.

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अध्याय 7: Hydrogen - Exercise [पृष्ठ ९८]

अध्याय 7 Hydrogen
Exercise | Q 1.3 | पृष्ठ ९८

Define ‘redox reaction’. Give one example.

Explain the following in term Oxidation of gain or loss of oxygen with two example.

When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?

Define reduction.

State whether the following conversion is oxidation or reduction:

PbO₂ + SO₂→ PbSO₄

Name:

an oxidizing agent that does not contain oxygen.

Write chemical formula for rust.

The process of reduction involves ____________.

Select the oxidising agent for the following reaction:

\[\ce{H2S + I2 -> 2HI + S}\]

Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid whereas copper does not. Explain why?

Hydrogen burns with a flame and sound is heard.