- 1(current)
Q. No.A: Beryllium oxide is an acidic oxide.
B: Beryllium sulphate is soluble in an aqueous medium.
C: Beryllium carbonate is thermally stable.
D: Beryllium shows anomalous behavior in comparison to other Group 2 elements.
The correct statements are:
1. A & B
2. B & C
3. B & D
4. C & D
(a) BeSO4
(b) MgSO4
(c) CaSO4
(d) SrSO4
(e) BaSO4
1. Only a & b
2. Only a, b, c
3. Only d & e
4. Only a & e
1. LiNO2 and NaNO2
2. Li2O and Na2O
3. Li2O and NaNO2
4. LiNO2 and Na2O
The correct set from the following in which both pairs are in correct order of melting point is :
1. LiF > LiCl ; MgO > NaCl
2. LiCl > LiF ; NaCl > MgO
3. LiF > LiCl ; NaCl > MgO
4. LiCl > LiF ; MgO > NaCl
An alkaline earth metal 'M' readily forms water-soluble sulphate and water-insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. The alkaline earth metal M is-
1. Mg
2. Be
3. Sr
4. Ca
Both lithium and magnesium display several similar properties due to the diagonal relationship. However, the one which is incorrect is:
| 1. | Both form nitrides |
| 2. | Nitrates of both Li and Mg yield NO2 and O2 on heating |
| 3. | Both form basic carbonates |
| 4. | Both form soluble bicarbonates |
Beryllium and aluminum exhibit many properties which are similar. But, the two elements differ in:
1. Exhibiting maximum covalency in compounds.
2. Forming polymeric hydrides.
3. Forming covalent halides.
4. Exhibiting amphoteric nature in their oxides.
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Q. No.
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