Question : Which of the following metals has the lowest density?
Option 1: Lithium
Option 2: Iron
Option 3: Gold
Option 4: Vanadium
Correct Answer: Lithium
Solution : The correct option is Lithium.
Lithium is an alkali metal and is known for its very low density compared to other common metals. Because its atoms are relatively small and contain fewer protons and neutrons in the nucleus than other elements, lithium is the lightest metal and has the lowest density.
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Question : Which of the following metals is the heaviest?
Option 1: Iron
Option 2: Silver
Option 3: Nickel
Option 4: Osmium
Question : Which of the following metals in pure form has the highest melting point?
Option 1: Gold
Option 2: Tungsten
Option 3: Copper
Option 4: Platinum
Question : Which one of the following metals does not react with water to produce Hydrogen?
Option 1: Potassium
Option 2: Cadmium
Option 3: Sodium
Option 4: Lithium
Question : Which of the following liquids has the least density?
Option 1: Freshwater
Option 2: Saltwater
Option 3: Petrol
Option 4: Mercury
Question : Which of the following are the main components of stainless steel?
Option 1: Iron and carbon
Option 3: Iron, chromium and nickel
Option 4: Iron and nickel
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