1.

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

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

The raw material required for the extraction of iron from haematite are (i) ………..(ii)  …………… and  hot air. The mineral present in haematite is (iii)…….. which is reduced by (iv) ……….. to iron

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.

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.