List out the characteristics properties of diamond and graphite from the properties given in the box.
[ Very hard, Transparent, Grey in colour, Conductor of electricity, High thermal conductivity, lustrous, High refractive index, Used to make pencil lead]

The characteristics of diamond and graphite, the crystalline allotropes of carbon are given. Classify them accordingly. i) Conducts electricity ii) Does not conduct electricity iii) Transparent iv) Used as a lubricant

The names of some metals are given below. Tungsten, Gold, Sodium, Copper, Iron, Magnesium Answer the following questions by selecting the appropriate ones from the list. Which metal with high malleability is used for making ornaments? Which of these metals reacts with cold water? Which of these is a hard metal but corrodes easily?