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Which is true statement: 1. Chemical …

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Which is true statement: 1. Chemical reaction changes the physical and chemical state of a substance. 2. When electric current is passed through water it, decomposes to produce hydrogen and oxygen gases.

Posted by Amandeep Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Katyani Chauhan 4 years, 11 months ago

Both are true .. since in chemical reaction it involves change in state of matter (all though physical state could be reversed again for ex - when phenolphthalein reacts with base it turns pink and become colourless after sometimes ) as well as interaction between the atoms of the elements. Water gets decompose to produce Hygrogen and oxygen gas during electrolysis .

2Thank You

Shivangi Singh 4 years, 11 months ago

2 is true

2Thank You

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CBSE > Class 10 > Science