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2nd Year Chemistry S Block Elements
MCQs Chapter No. 2 Solved Exercise
1. Which one of the following, is not an alkali metals:
(a) Fr
(b) Cs
(c) Rh
(d) Ra
Answer:
(d) Ra
2. Down’s cell is used to prepare:
(a) Na2CO3
(b) NaHCO3
(c) Na
(d) NaOH
Answer:
(c) Na
3. Chile saltpeter has the chemical formula:
(a) NaNO3
(b) KNO3
(c) Na2B4O7
(d) Na2B4O7.10H20
Answer:
(a) NaNO3
4. Which ion will have the maximum value of heat of hydration:
(a) Na+
(b) CS+
(c) Ba+2
(d) Diamond
Answer:
(d) Diamond
5. Beryllium metal is hard as:
(a) Fe
(b) Cu
(c) Zn
(d) Diamond
Answer:
(a) Fe
6. One of the following alkali metals is the most reactive which is that:
(a) Cs
(b) K
(c) Na
(d) Li
Answer:
(a) Cs
7. Which of the following does not give flame test:
(a) Zn
(b) Ba
(c) Sr
(d) Ca
Answer:
(a) Zn
8. Sodium metal cannot be stored in:
(a) Toluene
(b) Alcohol
(c) Benzene
(d) Kerosene oil
Answer:
(b) Alcohol
9. Dolomite is a carbonate of
(a) Ca and Ba
(b) Mg and Al
(c) Ca and Mg
(d) Na
Answer:
(c) Ca and Mg
10. Which one of the following configurations corresponds to an alkaline earth metals:
(a) [Ar] 3d10 4S2
(b) [Ne] 3d2 3p2
(c) [Ar] 4s2
(d) [Ar] 3d10 4s1
Answer:
(c) [Ar] 4s2
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