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Which halogen gas is widely used for water purification and disinfection of swimming pools?

AFluorine

BBromine

CChlorine

DIodine

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Dry Ice is the solid form of which chemical compound?

ACarbon Dioxide (CO2)

BMethane (CH4)

CWater (H2O)

DNitrogen (N2)

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Which property of metals allows them to be beaten or rolled into thin sheets?

ADuctility

BTenacity

CViscosity

DMalleability

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Which property of metals allows them to be drawn into thin wires?

AConductivity

BMalleability

CSonority

DDuctility

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Which metal is the best conductor of electricity among all pure metals?

AGold (Au)

BCopper (Cu)

CAluminum (Al)

DSilver (Ag)

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Which non-metal element exists in a liquid state at room temperature?

AFluorine (F)

BBromine (Br)

CIodine (I)

DChlorine (Cl)

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Which metal is liquid at standard room temperature and pressure?

AGallium (Ga)

BMercury (Hg)

CBromine (Br)

DCesium (Cs)

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Which element is the lightest and most abundant chemical element in the universe?

ALithium

BHelium

CHydrogen

DCarbon

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Which gas is commonly known as ‘Laughing Gas’?

ANitrous Oxide (N2O)

BNitrogen Dioxide (NO2)

CNitric Oxide (NO)

DAmmonia (NH3)

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Which two main gases constitute Liquefied Petroleum Gas (LPG)?

AMethane and Ethane

BPropane and Butane

CCarbon Monoxide and Hydrogen

DOxygen and Acetylene

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