#1
Which element has the chemical symbol 'Fe'?
Iron
ExplanationFe represents Iron in the periodic table.
#2
What is the atomic number of carbon?
6
ExplanationCarbon has an atomic number of 6.
#3
Which element is commonly used in batteries?
Lithium
ExplanationLithium is commonly used in batteries.
#4
Which element is responsible for the red color in rubies?
Corundum
ExplanationCorundum, not an element, is responsible for the red color in rubies.
#5
Which element is commonly used in dental fillings?
Gold
ExplanationGold is commonly used in dental fillings.
#6
What is the chemical symbol for potassium?
K
ExplanationK is the chemical symbol for potassium.
#7
Which element is used in fluorescent lamps?
Mercury
ExplanationMercury is used in fluorescent lamps.
#8
What is the chemical symbol for sodium?
Na
ExplanationNa is the chemical symbol for sodium.
#9
Which element is essential for the formation of bones and teeth in humans?
Calcium
ExplanationCalcium is essential for the formation of bones and teeth in humans.
#10
What is the chemical symbol for hydrogen?
H
ExplanationH is the chemical symbol for hydrogen.
#11
Which element is a noble gas?
Helium
ExplanationHelium is a noble gas.
#12
What is the most abundant element in the Earth's crust?
Silicon
ExplanationSilicon is the most abundant element in Earth's crust.
#13
Which element has the highest melting point?
Tungsten
ExplanationTungsten has the highest melting point.
#14
What is the chemical symbol for mercury?
Hg
ExplanationHg is the chemical symbol for mercury.
#15
Which element is found in all organic compounds?
Carbon
ExplanationCarbon is found in all organic compounds.
#16
What is the lightest element in the periodic table?
Hydrogen
ExplanationHydrogen is the lightest element in the periodic table.
#17
Which element is the most electronegative?
Fluorine
ExplanationFluorine is the most electronegative element.
#18
What is the lightest noble gas?
Helium
ExplanationHelium is the lightest noble gas.
#19
Which element is known as the 'King of Metals'?
Gold
ExplanationGold is known as the 'King of Metals'.
#20
What is the chemical symbol for silver?
Ag
ExplanationAg is the chemical symbol for silver.
#21
Which element has the highest atomic number among naturally occurring elements?
Uranium
ExplanationUranium has the highest atomic number among naturally occurring elements.
#22
Which element is used in the production of steel?
Manganese
ExplanationManganese is used in the production of steel.
#23
Which element is used as a semiconductor in electronic devices?
Silicon
ExplanationSilicon is used as a semiconductor in electronic devices.
#24
Which element is commonly used in making mirrors?
Silver
ExplanationSilver is commonly used in making mirrors.
#25
Which element is used in nuclear reactors as a moderator?
Graphite
ExplanationGraphite is used in nuclear reactors as a moderator.