Mention three important uses of wrought iron.

Mention two important uses of H_2O_2

Mention two important uses of dioxygen.

Mention two important uses of dinitrogen.

Mention an important use of phosphors.

Mention four important uses of dihydrogen.

Mention one important use of meprobamate.

Mention the economic importance of root.

Give three important uses of electrolysis.

What is Zener diode? Draw its voltage vs current characteristics in the reverse bias and indicate the breakwon voltage on the characteristics. Mention one important use of this diode.

What is Zener dioide? Draw its voltage vs currrent characteristics in the reverse bias and indicaste the breakdown voltage on the characteristics. Mention one important use of this diode.