Chemistry Mcqs 05
Chemical formula of limestone is:CaCO3CaSO4 CaO Ca(OH)2 A) CaCO3Limestone is calcium carbonate.
Which gas is used in soft drinks?OxygenNitrogenCarbon dioxide Hydrogen C) Carbon dioxide CO2 makes drinks fizzy.
Which non-metal conducts electricity? SulphurIodine PhosphorusGraphiteD) Graphite Graphite conducts electricity.
The symbol for silver is:Si S AgAu C) AgAg comes from Latin 'Argentum'.
Which gas is known as marsh gas?EthaneMethane Propane ButaneB) Methane Methane is called marsh gas.
The study of carbon compounds is called: Inorganic chemistry Physical chemistry Organic chemistry Analytical chemistry C) Organic chemistryOrganic chemistry deals with carbon compounds.
The formula of nitric acid is:H2SO4 HCl HNO3 H3PO4C) HNO3Nitric acid = HNO3.
Which of the following is a metal?Bromine) Chlorine Iodine CalciumD) Calcium Calcium is a metal.
Which element has the highest atomic number? Uranium Plutonium Oganesson GoldC) Oganesson Oganesson has atomic number 118.
70. Which of these is an inert gas?ChlorineHeliumOxygenHydrogen B) HeliumHelium is inert (Group 18).
Which acid is used in the manufacture of fertilizers? Acetic acidHydrochloric acid) Nitric acidCarbonic acid C) Nitric acidNitric acid is key for making fertilizers.
The molecular formula of glucose is:C6H12O6C12H22O11C2H5OH CH3COOHA) C6H12O6Glucose is C6H12O6.
Which element is used in X-ray films? Silver ZincCopper Lead A) Silver Silver halides are used in films.
The main constituent of biogas is: Ethane) Propane Methane Butane C) Methane Biogas is mostly methane.
Which acid is found in lemon? Hydrochloric acid Sulphuric acid Nitric acid Citric acid D) Citric acid: Lemon juice contains citric acid.