5C's of Periodic Table

Carbon

100

Carbon has how many number of protons ?

6

100

What is the atomic number of Carbon?

6

100

The hardest substance of carbon allotopies is _________

Carbon fiber

100

Is there any chemical bond between the layers of carbons in graphite?

No

100

Diamond and Graphite are example of which type of carbon?

Crystalline

Chlorine

100

Chlorine is used in water for __________

Purification

100

Chlorine is used widely for ________ reagents.

cleaning or disinfectant

100

What is the atomic number of Chlorine?

17

100

Is chlorine a nobel gas?

No

100

What is the chemical formula of common salt?

NaCl

Calcium

100

Excess of Calcium effects kidney how?

Stone formation

100

Which element makes our bones strong?

Calcium

100

What is the atomic number of Calcium?

20

100

Name one of the application of plaster of paris.

plastering, statue etc.

100

Which compound is used for food ripening?

Calcium Carbide

Chromium

100

What is the atomic number of Chromium?

24

100

Chromium is present in which group of the periodic table?

VI

100

Why Chromium coating is used in bathroom taps ?

To prevent rusting

100

Mention one application of Chromium.

Any one application

100

Chromium coating is also given to jewellery. (True/False)

True

Copper

100

Name the element which is best conductor of electricity.

Cu

100

What is the atomic number of Cu?

29

100

Why Cu is used in printed circuit boards?

for electrical conduction

100

An alloy of Cu with Zn is called ______

Brass

100

What is color of Cu ion?

Blue