The Sblock Elements Ques 40
40. Match List - I with List-II for the compositions of substances and select the correct answer using the code given below the lists :
[2011M]
| List I | List II | ||
|---|---|---|---|
| Substances | Composition | ||
| (1) | Plaster of paris | (i) | $CaSO_4 \cdot 0.5 H_2 O$ |
| (2) | Epsomite | (ii) | $CaSO_4 \cdot \frac{1}{2} H_2 O$ |
| (3) | Kieserite | (iii) | $MgSO_4 \cdot 7 H_2 O$ |
| (4) | Gypsum | (iv) | $CaSO_4 \cdot 2H_2 O$ |
| (v) | $CaSO_4$ |
Code :
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| (a) | (i) | (ii) | (iii) | (iv) |
| (i) | (ii) | (iii) | (iv) | (b) |
| (c) | (i) | (ii) | (iii) | (iv) |
| (i) | (ii) | (iii) | (iv) | (d) |
Show Answer
Answer:
Correct Answer: 40.(b)
Solution:
(b) (A) Plaster of paris $=CaSO_4 \cdot \frac{1}{2} H_2 O$
(B) Epsomite $=MgSO_4 \cdot 7 H_2 O$
(C) Kieserite $=MgSO_4 \cdot H_2 O$
(D) Gypsum $=CaSO_4 \cdot 2 H_2 O$
BETA
