Question 1 :
$I$. Agitation and stirring will increase the rate at which salt dissolves in water.<br/>$II$. Increased movement of water molecules allow sodium ions and chloride ions to be pulled apart as shells of hydration are formed.
Question 3 :
The temperature and pressure at which ice, liquid. water and water vapour can exist together are ?
Question 5 :
The molarity of a solution obtained by mixing 750 mL of 0.5(M) HCl with 250 mL of 2(M) HCl will be :<br>
Question 6 :
Sea water contains _________ oxygen which is utilized by plants and animals for respiration.
Question 7 :
Statement 1: A salt dissolved in an organic solvent will be a good electrical conductor.<br/>Statement 2: Salts will not dissolve appreciably in an organic solvent.<br/>
Question 8 :
When acetone and chloroform are mixed together, hydrogen bonds are formed between them, which of the following statement is correct about the solution made by mixing acetone and chloroform <br>
Question 9 :
If two liquids A and B form minimum boiling azeotrope at some specific composition then ____.<br>
Question 10 :
If a is the degree of dissociation of Na2SO<sub>4</sub>, the vant Hoff's factor (i) used for calculating the molecular mass is :<br>
Question 13 :
On the basis of information given below mark the correct option. Information on adding acetone to methanol some of the hydrogen bonds between methanol molecules break.<br>
Question 14 : Two liquids <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e799b97ced10523befee01b' height='24' width='47' >(A) and water (B) form a maximum boiling azeotrope when mixed in the ratio of 68% and 32 % respectively. It means <br>
Question 16 :
Which of the following 0.1 M aqueous solutions will have the lowest freezing point ?<br>
Question 17 :
The solubility of a gas in a liquid is directly proportional to the pressure of the gas. This statement is:
Question 18 : Consider the figure and mark the correct option. <br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e799bb7ced10523befee065' height='123' width='175' ><br>
Question 19 :
Correct combination among the following is <br>i) Water can be converted into vapour at ${ 100 }^{ 0 }C$ only<br>ii) Vapour pressure can be increased more than the atmospheric pressure at a certain temperature.<br>iii) Lowering of vapour pressure is directly proportional to mole fraction of solute.
Question 21 : Two beakers of capacity 500 mL were taken. One of these beakers, labeled as "A", was filled with 400 mL water of 2 M solution of NaCl. At the same temperature both the beakers were placed in closed containers of same material and same capacity as shown in figure <br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e799bb8e89a3d214216fbf1' height='77' width='185' ><br>At a given temperature, which of the following statement is correct about the vapour pressure of pure water and that of NaCl solution.<br>
Question 22 :
Which of the following would have the lowest vapor pressure in the pure state?
Question 23 :
A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution?<br>
Question 24 : <p>The solubility of gases in water is _____ proportional to pressure and______ proportional to temperature.</p>
Question 25 :
Statement 1: The solubility of gases in liquids does not depend upon pressure. <br>Statement 2: The vapor pressure of a substance is independent of external pressure.
Question 27 :
Which of the following liquid pairs shows a positive deviation from Raoult's law?<br>
Question 28 :
On the basis of information given below mark the correct option. <br>Information<br>(I) Inbromoethane and chloroethane mixture intermolecular interactions. Of A - A and B - B type are nearly same as A - B type interactions.<br>(II) In ethanol and acetone mixture A - A or B - B type intermolecular interaction are stronger than A - B type interactions<br>(III) In chloroform and acetone mixture A - A or B - B type intermolecular interaction are weaker than A - B Type interactions.<br>
Question 29 :
2 g of sugar is added to one litre of water to give sugar solution. What is the effect of addition of sugar on the boiling point and freezing point of water? <br>
Question 31 :
Barium ions, CN¯ and CO<sub>2</sub>+ form an ionic complex. If that complex is supposed to be 75% ionized in water with vant Hoff factor 'i' equal to four, then the coordination number of CO<sub>2</sub>+ in the complex can be :<br>
Question 32 :
The solubility of a solute with increase of temperature when the dissolution is attended by absorption of heat:
Question 33 :
Which of the liquids in each of the following pairs has a higher vapour pressure?
Question 34 :
Benzene and toluene form nearly ideal solutions. At 20<sup>o</sup> C, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20<sup>o</sup> C for a solution <br>containing 78 g of benzene and 46 g of toluene in torr is [2005]<br>
Question 35 :
The solubility of gases in water __________ with rise in temperature.
Question 36 : <p>The maximum amount of solute that will saturate 100g of solvent at that temperature is known as: </p>
Question 37 :
In the following aqueous solutions<br>(A) 1 m sucrose <br>(B) 1 m potassium ferricyanide and <br>(C) 1 m potassium sulphate maximum value of vapour pressure of solution is that of :<br>
Question 38 :
The pressure at which liquid and vapour can coexist at equilibrium is called the :
Question 39 :
Which of the following 0.1 M aqueous solutions will have the lowest freezing point ?<br>
Question 40 :
Assertion: The solubility of a solid in a liquid increases with increase of pressure.
Reason: Solubility of gas in a liquid is directly proportional to the pressure of the gas.
Question 41 :
Enough $Na_{2}SO_{4}$ is dissolved in water at $40^{\circ}C$ to saturated the solution. When this occurs heat is given off. All of the following statements are true EXCEPT:
Question 43 : For which of the following parameters the structural isomers <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e799bcde89a3d214216fc1e' height='27' width='63' > and <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e799bceced10523befee093' height='25' width='78' > would be <br>expected to have the same values ? ( Assume ideal behaviour)[2004]<br>
Question 44 :
The equilibrium partial pressure of a pure liquid always decreases when a non volatile solute is dissolved in the liquid<br>
Question 45 :
If two liquids A and B form an ideal solution, then
Question 46 :
The main reason for the extremely low solubility of carbon dioxide in benzene $(C_{6}H_{6})$ at room temperature is due to which of the following?
Question 47 :
In mixture A and B components show -ve deviation as [2002]<br>
Question 48 :
Considering that calcium carbonate is insoluble in water, how can it be used as a dietary supplement?
Question 50 : Grapes placed in three beakers X, Y and Z containing different type of solutions are shown in figures. <br>
<img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e799ba1ced10523befee031' height='89' width='281' ><br>If Beaker X contains water, Y and Z contains<br>
