Fill in the blanks with the substances given in the box:

{Carbon monoxide, carbon dioxide, coke, lime, iron (II) oxide, iron (III) oxide, limestone.}

Fill in the blanks with the correct words from that of alkenes?

Alkenes are the (i)…………(analogous/homologous) series of (ii)………. (saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of (iii)…………(double /single )bonds. Alkenes mainly undergo(iv)……………(addition/substitution) reactions.

Name a neutral covalent molecule which contains one lone pair of electrons.

4.

Identify the following  reaction as either oxidation or reduction:

O+2e^- ---> O^2-  

Identify the following  reaction as either oxidation or reduction:

K-e^----> K⁺

Identify the following  reaction as either oxidation or reduction:

Fe³⁺ +e^-----> Fe²⁺

A strip of copper is copper four different colourless salt solution, they are KNO₃, AgNO₃,Zn(NO₃)_2­, Ca(NO₃)₂ which one of the solutions will finally turn blue?

A metal which is a liquid at room temperature. 

Name the following:
A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium. 

Name the following:

The process of heating an ore to high temperature in the presence of air.