Iron objects can be protected by electroplating them with

• Cr

• Ni

• Zn

• All of these

When electrodes are immersed in water and electricity passed, the bubbles formed on the positive terminal is actually _______ gas.

• Hydrogen

• Carbondioxide

• Oxygen

• Nitrogen

When electric current is passed through the copper sulphate solution,copper sulphate dissociates into:

• Copper and Sulphur

• Copper and Oxygen

• Copper and Sulphate

• None of these

The positive charged ions are called:

• Cations

• Anions

• Ions

• None of these

All vegetable oils are non-electrolytes

• True

• False

Which fibre is used as artificial wool?

• Acrylic

• Rayon

• Nylon

• Cotton

Melamine is:

• Thermoplastic polymer

• Thermosetting polymer

• Fibre

• None of these

Which term is used for polymers made of a large number of glucose units:

• Protein

• Fructose

• Cellulose

• Polyester

Fire proof plastic uniform worn by fire fighters has a coating of _____ to make it fire resistant.

• Nylon

• Rayon

• Melamine

• Silk

When you burn polyester

• It doesnot catch fire easily and melts away

• Forms hard and uncrushable bead

• Shrinks away from flame

• All the options are correct