9th Chemistry Chapter 6: Solution
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | A solution of NaOH contains 20g of this compound in 2dm^3 of solution. What is the molarity of this solution ? | 2M | 1M | 0.25M | 0.5M | 2 | Molarity i sthe number of moles of solute dissolved in: | 1kg of solution | 100 g of slovent | 1 dm^3 of solvent | 1 dm^3 of solution | 3 | Which one of the following is heterogeneous mixture ? | milk | ink | milk of magnesia | sugar solution | 4 | Which quantity is the same for one mole of hydrogen gas and one mole of water ? | mass | number of atoms | number of molecules | number of gram atomic mass | 5 | Brass is a solid solution of : | Cu +Zn | Cu +Ni | Cu +Fe | Cu+Na | 6 | How many moles of sodium atoms are present in 2.3g Na ? | 1 | 1.5 | 0.1 | 0.15 | 7 | Which one of following solutions contains more water? | 2M | 1M | 0.5M | 0.25M | 8 | if one mole of Na contains X atoms of sodium, wht is the number of moles contained in 46g of sodium ? | X | 2 | 2X | 1.5X | 9 | Mist is an example of solution : | liquid in gas | gas in liquid | solid in gas | gas in solid | 10 | How many atoms ae there in 28g of nitrogen gas ? | 2 | 1 | 6.022*10^23 | 12.044*10^23 | 11 | If the slute -solute forces are strong enought than those of solute -solvent forces . | dissolves readily | does not dissolve | dissolves slowly | dissolves and precipitates | 12 | Which one of the following will show negligible effect of temperature on its solubility ? | Kcl | KNO3 | NaNO3 | Nacl | 13 | The maximum amount of sodium acetate that dissolves in 100g of water at 0oC is 119g and 170g at 100oC . If you place 170g of sodium acetate in 100g of water at 0oC , the resulting solution would be: | Unsaturated | saturated | supersaturated | 1M | 14 | What is mass of 5 mole of hydrogen gas ? | 5g | 5.04g | 10.08g | 1.008g | 15 | Fog is an example of a solution of : | liquid in gas | gas in liquid | solid in gas | gas in solid | 16 | How many atoms are there in 0.1 mole of carbon? | 6.022*10^23 | 6.022*10^22 | 6.022*10^24 | 12.022*10^23 | 17 | Which one of the following is a liquid in solid solution ? | sugar in water | butter | opal | fog | 18 | if 10cm^3 of alcohol is dissolved in 100 g of water , it is called : | %w/w/ | %w/v | %v/w | %v/v | 19 | Which of the following solution is more dilute? | 1M | 2M | 0.1M | 0.009M | 20 | A solution of NaOH has a concentration of 4g/dm^3. What is the mass of NaOH contained in 250cm^3 of this solution? | 40g | 20g | 1g | 2g | 21 | When a saturated solution is diluted it turns into : | supersaturated solution | saturated solution | a concentrated solution | unsaturated solution |