Home
Class 12
CHEMISTRY
each question contain STATEMENT-1(Assert...

each question contain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below :
STATEMENT-1: Colloidal Agl is prepared by adding Kl in slight excess to `AgNO_(3)` solution, the and particles migrate toward cathode under electric field.
STATEMENT-2: Colloidal particles adsorb ions and thus becomes electrically neutral.

A

if both the statement are TRUE and STATEMENT -2 is the correct explanation of STATEMENT - 1

B

If both the statement are STATEMENT -2 is NOT the correct explanation of STATEMENT -1

C

If STATEMENT -1 is TRUE and STATEMENT is FALSE

D

If STATEMENT -1 is FALSE and STATEMENT -2 is TRUE

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given question, we need to analyze both statements carefully and determine their validity. ### Step-by-Step Solution: 1. **Understanding Statement 1**: - **Assertion**: "Colloidal AgI is prepared by adding KI in slight excess to AgNO3 solution, and the particles migrate toward the cathode under an electric field." - When KI is added to AgNO3, a precipitation reaction occurs, forming AgI (silver iodide) and KNO3 (potassium nitrate). The AgI formed is a colloidal solution. - In an electric field, the positively charged AgI particles will migrate towards the cathode (the negative electrode). - **Conclusion**: Statement 1 is **true**. 2. **Understanding Statement 2**: - **Reason**: "Colloidal particles adsorb ions and thus become electrically neutral." - Colloidal particles can indeed adsorb ions from the surrounding medium, but this does not necessarily mean they become electrically neutral. In fact, colloidal particles often carry a net charge (positive or negative) and will migrate in an electric field due to this charge. - Therefore, the assertion that they become electrically neutral is incorrect. - **Conclusion**: Statement 2 is **false**. 3. **Final Evaluation**: - Since Statement 1 is true and Statement 2 is false, the correct answer is that Statement 1 is true and Statement 2 is false. ### Answer: - The correct option is **3**: Statement 1 is true and Statement 2 is false.
Promotional Banner

Similar Questions

Explore conceptually related problems

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Gold sol is multimolecular and hydrophotic in nature. STATEMENT-2: Gold sol is prepared by Bredig's arc method.

Each question contains STATEMENTS-1 (Assertion) and STATEMENT -2 (Reason). Examine the statements carefully and mark the correct answer according to the instructions given below: STATEMENT-1: The plot of k versus 1/T is linear. STATEMENT-2: k=A.e^(-E_(a)//RT)

each question contain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Protein, starch are lyophilic colloids. STATEMENT-2: They have strong interaction with the dispersion medium.

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: A colloid gets coagulated by addition of an electrolytes. STATEMENT-2: Coagulation depends on the valance and sign of the charge of the coagulant ion.

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Soap and detergent are macro-molecular colloids. STATEMENT-2: Soap and dtergent are molecules of large size.

Each question contains STATEMENTS-1 (Assertion) and STATEMENT -2 (Reason). Examine the statements carefully and mark the correct answer according to the instructions given below: STATEMENT-1: Neutron are the best bombarding particles. STATEMENT-2: Neutrons are neutral particles.

STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Lyophilic colloids are called as reversible sols. STATEMENT-2: Lyophilic sols are extensively hydrated.

Each question contains STATEMENTS-1 (Assertion) and STATEMENT -2 (Reason). Examine the statements carefully and mark the correct answer according to the instructions given below: STATEMENT-1:Molecurity has no meaning for a complex reactions STATEMENT-2:Molecurity defined only for RDS

STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: A catalyst is more effective in finely divided form. STATENENT-2: Finely divided form has more surface area.

each question contain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Colloidal solutions are stable but colloidal particles do not settle down. STATEMENT-2: Brownian movement counters the force of gravity act on collooidal particles