Question

Fill in the blanks:
1. Hydrogen is an electro _________ element.
2. The removal of oxygen from a substance is called _______. 3. When _______ gas is passed through chlorine water ______ and _______ are produced.
4. The variety of carbon that can mark on paper is _____.
5. ________ charcoal is used to purify sugar.
6. Though ______ is a non-metal, it is a good conductor of heat and electricity.
7. When diamonds, graphite, etc. are burnt in the air, they all produce _______ .

8. ______ acid is used in the preparation of carbon dioxide gas in the laboratory.​

Answer 1

1. Nonmetal
2. Reduction

i can't understand 3th ques

Answer 2

1. both electronegative and electropositive element

2. Reduction

3.When chlorine gas (Cl2) is added to the water (H2O), it hydrolyzes rapidly to produce hypochlorous acid (HOCl) and the hypochlorous acid will then dissociate into hypochlorite ions (OCl-) and hydrogen ions (H+).

4. fact, uses and property es

5.Bone char

6.graphite,

7.carbon dioxide gas (CO2).

8.(H2CO3)