Principles Related to Practical Chemistry

Identify the incorrect statements regarding primary standard of titrimetric analysis. Choose the correct answer from the options given below :

1. (C) and (E) only
2. (A) and (B) only
3. (B) and (E) only
4. (C) and (D) only

Methods used for purification of organic compounds are based on :

1. neither on nature of compound nor on the impurity present.
2. presence of impurity only.
3. nature of compound and presence of impurity.
4. nature of compound only.

Match List I with List II Choose the correct answer from the options given below:

1. A-II, B-III, C-IV, D-I
2. A-III, B-IV, C-I, D-II
3. A-I, B-II, C-III, D-IV
4. A-IV, B-I, C-II, D-III

[figure] In the given TLC, the distance of spot A & B are 5 cm & 7 cm, from the bottom of TLC plate, respectively. Rf value of B is x 10-1 times more than A. The value of x is .

Consider the following test for a group-IV cation. M2+ + H2S A (Black precipitate) + byproduct A + aqua regia B + NOCl + S + H2O B + KNO2 + CH3COOH C + byproduct The spin-only magnetic moment value of the metal complex C is BM (Nearest integer)

Match List I with List II Choose the correct answer from the options given below:

1. A-III, B-I, C-IV, D-II
2. A-III, B-IV, C-I, D-II
3. A-III, B-II, C-IV, D-I
4. A-III, B-I, C-II, D-IV

Match List I with List II Choose the correct answer from the options given below:

1. A-IV, B-I, C-II, D-III
2. A-I, B-II, C-III, D-IV
3. A-II, B-III, C-IV, D-I
4. A-III, B-I, C-II, D-IV

Match List I with List II Choose the correct answer from the options given below :

1. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
2. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
3. (A)-(II), (B)-(III), (C)-(IV), (D)-(I)
4. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

In qualitative test for identification of presence of phosphorus, the compound is heated with an oxidising agent. Which is further treated with nitric acid and ammonium molybdate respectively. The yellow coloured precipitate obtained is :

1. Na3PO4 12MoO3
2. (NH4)3PO4 12(NH4)2MoO4
3. MoPO4 21NH4NO3
4. (NH4)3PO4 12MoO3