Chemistry Mcqs 04
Which of these is a fossil fuel? Hydrogen CoalUraniumHeliumB) Coal Coal is a fossil fuel.
The formula of plaster of Paris is: CaCO3CaSO4·½H2O CaSO4Ca(OH)2 B) CaSO4·½H2OThis is plaster of Paris.
Which of these is NOT a greenhouse gas?CO2CH4 O2 N2OC) O2 Oxygen is not a greenhouse gas.
The metal present in hemoglobin is: Zinc IronCopperMagnesium B) Iron Iron binds oxygen in hemoglobin.
The metal present in chlorophyll is: Magnesium Iron Zinc Calcium: A) MagnesiumMagnesium is central in chlorophyll.
Which of these is a noble gas? Hydrogen Neon Nitrogen OxygenB) NeonNeon is a noble gas in Group 18.
Which acid is used in car batteries?Hydrochloric acidNitric acidSulphuric acidPhosphoric acidC) Sulphuric acid Car batteries use sulphuric acid.
The chemical name of table salt is:Sodium hydroxideSodium bicarbonate Sodium chloride Sodium carbonate C) Sodium chlorideTable salt is NaCl.
Which gas is responsible for acid rain?) Nitrogen Oxygen Sulphur dioxide Hydrogen C) Sulphur dioxideSO2 forms acid rain after reacting with water.
Which of these is used in water purification? Potassium permanganate Sodium chlorideCopper sulphateZinc chlorideA) Potassium permanganateKMnO4 is used as a disinfectant.
Which of these is NOT an alkali metal? SodiumPotassiumCalciumLithiumC) Calcium Calcium is an alkaline earth metal, not alkali.
What is the common name of CaO?LimewaterQuicklimeSlaked lime Limestone B) QuicklimeCaO is called quicklime.
Which of these gases is the heaviest? OxygenHydrogenCarbon dioxide Nitrogen C) Carbon dioxide CO2 is heavier than air.
What is the color of iodine?YellowBlack Purple Green C) Purple Iodine vapors are purple.
Which metal is used for galvanization?CopperZincAluminum IronB) Zinc Zinc coats iron to prevent rusting.