Question

Q1) Air is regarded as mixture because Its pressure may very Its temperature may change Its volume changes under different conditions Its composition may vary Q2. Which of the following is a compound? 1 point Stainless steel Bronze Graphite Hydrogen sulphide Q3. In which of the following the constituents are present in fixed ratio? 1 point Mixture Compound Solution Colloid Q4. Brass is a 1 point Compound Homogeneous mixture Element Heterogeneous mixture Q5. The element which is a liquid slightly above 30 degree Celsius is 1 point Magnesium Sodium Cesium Lithium Q6. Which of the following element has the characteristics of both metals and nonmetals? 1 point Carbon Nitrogen Arsenic Oxygen Q7. In sugar solution, 1 point Sugar is solute, water is solvent Sugar is solvent, water is solute Both are solutes Both are solvents Q8. Heterogeneous mixture in which the solute particles do not dissolve and remain suspended throughout the solvent and the solute particles can be seen with the naked eye is known as: 1 point Colloidal solution Super saturated solution Sublimation Suspensions Q9. In tincture of iodine, find the solute and solvent? 1 point alcohol is the solute and iodine is the solvent iodine is the solute and alcohol is the solvent any component can be considered as solute or solvent tincture of iodine is not a solution Q10. When two liquids do not mix, they form two separate layers and are known as 1 point Miscible liquids Immiscible liquids Saturated liquids Super saturated liquid

Answer 1

Air is composed of various gases in different proportions which can be separated using chemical methods.