- 1(current)
Q. No.Which of the following statements is correct?
| a. | Elements of group 15 form electron deficient hydrides |
| b. | All elements of group 14 form electron precise hydrides |
| c. | Electron precise hydrides have tetrahedral geometries. |
| d. | Electron rich hydrides can act as Lewis acids. |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following statements is correct?
a. Hydrides of group 13 act as Lewis acids
b. Hydrides of group 14 are electron deficient hydrides
c. Hydrides of group 14 act as Lewis acids
d. Hydrides of group 15 act as Lewis base
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Correlate the items listed in Column I with those listed in Column II.
| Column I | Column II |
| A. Synthesis gas | 1. Na2[Na4(PO3)6 ] |
| B. Heavy water | 2. Mixture of CO and H2 |
| C. Calgon | 3. Prolonged electrolysis of water |
| D. Salt like hydrides | 4. Stoichiometric compounds of s-block elements |
Codes
| A | B | C | D | |
| 1. | 4 | 3 | 2 | 1 |
| 2. | 2 | 3 | 1 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH, the correct order of increasing ionic character is
1. LiH > NaH > CsH > KH > RbH
2. LiH < NaH < KH < RbH < CsH
3. RbH > CsH > NaH > KH > LiH
4. KH < NaH < RbH < LiH < CsH
Elements of which of the following group(s) of periodic table do not form hydrides?
1. Groups 7, 8, 9
2. Group 13
3. Groups 15, 16, 17
4. Group 14
Which of the following statements is/are correct?
1. Metallic hydrides are deficient in hydrogen
2. Metallic hydrides conduct heat and electricity
3. Ionic hydrides do not conduct electricity in solid-state
4. All of the above
- 1(current)
Q. No.
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