Posted On : 07-Mar-2018

Q1: Which one of the following metals is the best conductor of electricity?

• A. iron
• B. copper
• C. silver
• D. aluminium

Q2: Which of the following is the lightest metal?

• A. mercury
• B. copper
• C. aluminium
• D. lithium

Q3: Which two metals combine to form Bell metal?

• A. nickel and copper
• B. zinc and copper
• C. tin and copper
• D. brass and nickel

Q4: Which of the following metals is known to pollute the air of big cities with a large number of vehicles?

• A. Lead
• B. Mercury
• C. Iron
• D. Copper

Q5: Which of the following metals is used in making the filament of an electric bulb?

• A. platinum
• B. tungsten
• C. carbon
• D. chromium

Q6: Which one among the following metals is used for making boats because it does not corrode by seawater?

• A. Tungsten
• B. Nickel
• C. Antimony
• D. Titanium

Q7: Which one of the following metals/alloys is used in electric heating elements?

• A. Nichrome
• B. Chromium
• C. Steel
• D. Bronze

Q8: Why are noble metals so named?

• A. Because they are expensive
• B. Because they are generally resistant to corrosion and oxidation
• C. Because they are rarely found in the earth
• D. Because they are more malleable and ductile than others

Q9: Due to its reactivity, the alkali metal sodium is stored in -

• A. water
• B. alcohol
• C. kerosene
• D. ethanol

Q10: Thin foils of which of the following metals are used in decorating sweets?

• A. steel
• B. aluminium
• C. chromium
• D. silver