CHEMISTRY ONE LINER SET 42

CHEMISTRY ONE LINER SET 42

1. The mass number of a nucleus is – sometimes more and sometimes equal to its atomic number
 
2. The weight of 6.023 × 10^22 atoms of carbon is – 1-2gram
 
3. Which of the following particle has the dual nature of particle wave? Electron
 
4. Mass number is the sum of – Protons and Neutrons
 
5. An alloy used in making heating elements for electric heating devices is – Nichrome
 
6. The use of Heat treatment of ore that includes smelting and roasting is termed as–
Pyrometallurgy
 
7. Which of the following does not contains silver? German Silver
 
8. Aluminum is extracted from – Bauxite
 
9. The ore of Aluminum is – Bauxite
 
10. Brass contains – Copper and Zinc