- 1(current)
Q. No.| Assertion (A): | Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic. |
| Reason (R): | The deep blue solution is due to the formation of amide. |
| 1. | (A) is false but (R) is true. |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are true and R is NOT the correct explanation of (A). |
| 4. | (A) is true but (R) is false. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLiF is sparingly soluble in water because it has:
1. partial covalent character.
2. small electronegativity.
3. high lattice enthalpy.
4. low hydration enthalpy.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe structures of beryllium chloride in solid-state, and vapor state are :
1. Dimer, and Linear, respectively.
2. Chain in both.
3. Chain, and dimer, respectively.
4. Linear in both.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHCl was passed through a solution of CaCl2, MgCl2, and NaCl. Compound(s) that get crystallize is/are-
1. Only NaCl
2. Only MgCl2
3. NaCl, MgCl2, and CaCl2
4. Both MgCl2 and CaCl2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the correct statement from the following:
| 1. | The correct order of hydration enthalpies of alkaline earth cations is Be2+ < Mg2+ < Ca2+ < Sr2+ < Ba2+ |
| 2. | Lithium and Magnesium show some similarities in their physical properties as they are diagonally placed in the periodic table. |
| 3. | Lithium is softer among all alkali metals. |
| 4. | Lithium chloride is deliquescent and crystallizes as a hydrate, LiCl·6H2O. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is an amphoteric hydroxide?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the alkali metal chloride (MCl) forms its dehydrate (MCl.) easily?
1. LiCl
2. CsCl
3. RbCl
4. KCl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most acidic oxide among the following is -
1. MgO
2. BeO
3. BaO
4. CaO
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn context with beryllium, which one of the following statements is incorrect?
1. It is rendered passive by nitric acid
2. It forms
3. Its salts rarely hydrolyze
4. Its hydride is electron-deficient and polymeric
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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