Ask & Answer: India's Largest Education Community

This is a Multiple Choice Type Questions as classified in NCERT Exemplar

Ans: Correct option is (ii)

As the process of adsorption is an exothermic one; physical adsorption occurs readily at low temperature and decreases with an increase in the temperature as equilibrium shifts in the backward direction. This is known as Le-Chatelier's principle, hence the correct option is (ii).

This is a Multiple Choice Type Questions as classified in NCERT Exemplar

Ans: Correct option is (iii)

When both adsorption and absorption occur simultaneously it is known as sorption; hence the correct option is (iii).

This is a Multiple Choice Type Questions as classified in NCERT Exemplar

Ans: Correct option is (iv) 

As gas-gas forms up a homogeneous composition, so the correct option is (iv).

This is a Multiple Choice Type Questions as classified in NCERT Exemplar

Ans: Correct option is (iv)

In equilibrium ΔG=0 so ΔG=ΔH-TΔS which means ΔH=TΔS therefore the correct option is (ii).

This is a Multiple Choice Type Questions as classified in NCERT Exemplar

Ans: Correct option is (iii)

In homogeneous catalysis, the reactant as well as the product both are in same phase and composition is uniform throughout hence the correct option is (iii).

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: The rate of an enzyme reaction is maximum at a definite temperature, called the optimum temperature. On either side of the optimum temperature, the enzyme activity decreases. The optimum temperature range for enzymatic activity is 298-310 K. Human body temperature being 310 K is suited for enzyme-catalysed reactions. Therefore, during fever, catalytic activity of the enzyme may get affected.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: When gaseous molecules come in contact with the surface of a solid catalyst, a weak chemical combination takes place between the surface of the catalyst and the gaseous molecules, which increases the concentration of reactants on the surface. Different molecules adsorbed side by side have better chance to react and form new molecules. This enhances the rate of reaction. Also, adsorption is an exothermic process. The heat released in the process of adsorption is utilised in enhancing the reaction rate.

The fee for BCom at Future Institute of Management Studies is INR 1.4 lakh. Candidates who get the final admission offer by clearing the admission process are eligible to pay the course fee. 
There are various componenents such as the hostel fee, security deposit, and the admission fee, in the course fee.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: The gaseous molecules diffuse on to the surface of the solid catalyst and get adsorbed. After the required chemical changes the products diffuse away from the surface of the catalyst leaving the surface free for more reactant molecules to get adsorbed and undergo reaction.

SBI PO final result 2025 was announced on June 13, 2025. The result has been announced on the official website. The roll numbers of candidates have been made available in PDF form. candidates who qualified as per the final result has been selected for appointment.

CMR University has a mixed vibe according to the students. The university is known for its placement record, especially in engineering and management, with reputable companies like Google, TCS, and Microsoft recruiting from the campus. The university emphasizes industry-relevant curriculum and skills development, preparing students for their future careers. CMR University is UGC-recognized and AIU-accredited, and has received various certifications for quality management, environment management, and more. The university has well-trained and expert faculty members and focuses on quality education. 

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: After the reaction is over between adsorbed reactants, the process of desorption is important to remove products and further create space for the other reactant molecules to approach the surface and react.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: The process of physisorption for example that of H2 on finely divided nickel, involves weak van there Waals' forces. With increase in temperature, hydrogen molecules dissociate into hydrogen atoms which are held on the surface by chemisorption.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: River water is a colloidal solution of clay and sea water contains lot of electrolytes. The point at which river and sea meet is the site for coagulation. Deposition of coagulated clay results in delta formation.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: Activated charcoal acts as an adsorbent for various poisonous gases present in the coal mines.

Candidates wishing to get admission to the BCom programme at the Future Institute of Management Studies must appear for the CUET in order to get the final admission offer. Candidates are required to clear the cutoff that the institute sets to get the final shortlist. 
Candidates must apply for CUET and for the institute seperately. 

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: Eosin is adsorbed on the surface of silver halide precipitate making it coloured.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: Due to excessive dialysis, traces of electrolyte which stabilises the colloids is removed completely, making the colloid unstable. As a result, coagulation takes place.

This is a Short Answers Type Questions as classified in NCERT Exemplar

Ans: Physisorption involves weak van there Waals forces which weaken with rise in temperature. The chemisorptions involves formation of chemical bond involving activation energy and like any other chemical reaction is favoured by rise in temperature.