Question 2 :
The minimum energy level necessary to permit a reaction to occur is :
Question 7 :
An increase in the concentration of adsorbate at the surface relative to its concentration in bulk phase is called :
Question 8 :
Which is correct in the case of van der Waals adsorption?
Question 9 :
The precipitate of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead6a44381c2135355c7f44"> in presence of water containing some <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead6a4986ab8369637640e1"> becomes colloidal on gentle shaking. This is an example of
Question 12 :
Which is not correct regarding the adsorption of a gas on surface of a solid?
Question 15 :
By dividing the catalyst into fine powder there will be increase in
Question 16 :
A liquid which markedly scatters a beam of light (visible in dark room) but leaves no residue when passed through a filter paper is best described as :
Question 17 :
An example of dispersion of a liquid in a gas is
Question 19 :
A dilute solution of litmus becomes colourless on shaking with charcoal. This is due to :
Question 22 :
The coagulation of sol particles or sol destruction may be brought in by :
Question 31 :
The movement of sol particles under an applied electric field is called :
Question 32 :
At high concentration of soap in water, soap behaves as :-
Question 33 :
Which reaction characteristics are changing by the addition of a catalyst to a reaction at constant temperature?<br> (i)activation energy (ii)Equilibrium constant (iii)Reaction entropy (iv)Reaction enthalpy
Question 35 :
Which characteristic is the most important factor in giving rise to peculiar properties of colloids?
Question 38 :
The catalyst iron, employed in the Habers process, contains molybdenum, the function of which is :
Question 39 :
There is formation of an electrical double layer of opposite charges on the surface of colloidal particles, so a potential develops which is known as
Question 40 :
The addition of alcohol to a saturated aqueous solution of calcium acetate first forms a sol and then sets to a gelatinous mass called solid alcohol which is a :
Question 41 :
The coagulation of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead6a50381c2135355c7f70"> of gold sol is completely prevented by addition of 0.025 g of starch to it. The gold number of starch is
Question 45 :
Which of the following is the best way to speed up a chemical reaction?<br/>
Question 46 :
Which one of the following methods is commonly used for destruction of colloid?
Question 47 :
Hydrolysis of maltose ( <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead6a4686ab8369637640d3"> by maltase gives :