10th Samacheer Quiz

Q1. How many groups are there in the modern periodic table?

18 17 16 8

Q2. Elements in the same group generally have similar valence-electron patterns.

Group Period Isotope Molecule

Q3. Why do elements in the same group show similar chemical properties?

Similar valence-electron configuration Same atomic mass Same neutron number Same colour

Q4. What does the group of an element help indicate?

Similar chemical properties Nuclear colour Only melting point Atomic speed

Q5. Bronze is mainly an alloy of:

Copper and tin Copper and zinc Iron and carbon Gold and silver

Q6. What are Group 17 elements called?

Halogens Noble gases Alkali metals Lanthanides

Q7. How many elements are in the second period?

8 2 18 10

Q8. What is the process of coating iron with zinc called?

Galvanization Electrolysis Smelting Dispersion

Q9. What is a mineral?

A naturally occurring element or compound Only an artificial mixture Always a pure metal A food substance

Q10. Why are alkali metals highly reactive?

They readily lose their single outer electron They lose seven electrons They always gain electrons Their shells are completely filled

Periodic Classification of Elements