Fill in the blanks to complete the analogy:
Hydrogen: Burns in air; Oxygen: __________

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Solution

Hydrogen:
Burns in air with a pop sound.
Oxygen:
Supports Combustion.
Therefore, Hydrogen: Burns in air; Oxygen: Supports combustion.

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Similar questions

Fill in the blanks :

(a) ___ product when carbon is burnt in a limited supply of air or oxygen.

(b) Carbon monoxide burns in air with a ___ flame to form carbon dioxide.

(d) A mixture of 95 $%$ oxygen and 5 $%$ carbon dioxide is called ___

(e) Carbon monoxide is used as a ___ in the extraction of pure metals from their corresponding ores.

Fill in the blanks.

(a) Hydrogen is ___ than air.

(b) Hydrogen is ___ soluble in water.

(d) A Metal ___ hydrogen in the reactivity series gives hydrogen with ___

(e) Hydrogen reacts with metal oxides to form ___ and ___

(f) Oxidation is the removal of ___ or addition of ___

(g) In redox reactions oxidation and reduction occur ___

Question 13.2

A list of words is given in a box. Use appropriate words to fill up the blanks in the following statements.

Air, oxygen, wind, water vapour, mixture, combination,
direction, road, bottles, cylinders.

Air is a ___ of some gases

If hydrogen burns in air to produce oxygen, why a rocket which contains hydrogen as fuel produces smoke during its launch?

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