metals and non metals

Which of the following is a metal?

• Iron

• Silicon

• Sulphur

• Phosphorus

Q2. Which of the following type of element have 4 valence electrons?

• Metals

• Metalloids

• Non-metals

• None of these

Q3. Which of the following type of element have dull appearance?

• Non-metals

• Metals

• Both metals and non-metals

• All of the above

Q4. The minerals present as impurities are called-

• ores

• gangue

• rocks

• stones

Q5. Which of the following metals are not very reactive?

• zinc

• silver

• iron

• aluminium

Q6. Which is the most abundant element in the universe?

• Nitrogen

• Oxygen

• Carbon

• Hydrogen

Q7. Which of the following element forms about 23% by mass of the atmosphere?

• oxygen

• carbon

• nitrogen

• hydrogen

Q8. Which of the following is the central element of all living matter?

• hydrogen

• oxygen

• carbon

• sulphur

Q9. Which of the following element does not occur in the free state?

• Nitrogen

• silicon

• sulphur

• carbon

Q10. Which of the following are noble gases?

• helium

• neon

• argon

• all of the above