| 1 |
Which of the following gas will turn lime water milky |
- A. Cl<sub>2</sub>
- B. NO<sub>2</sub>
- C. CO
- D. CO<sub>2</sub>
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| 2 |
Which one of the following does not belong to alkaline earth metals. |
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| 3 |
Which one of the following has lowest first ionization energy. |
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| 4 |
Ca Mg3 (SiO3)2 is the composition of. |
- A. Dolomite
- B. Gypsum
- C. Calcite
- D. Asbestos
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| 5 |
Which is insoluble in water. |
- A. BeSO4
- B. MgSO4
- C. CaSO4
- D. BaSO4
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| 6 |
Which of the following compounds is used to make spray, which has fungicidal action. |
- A. BaSO4
- B. Na2CO3
- C. CaO
- D. CaSO4.2H2O
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| 7 |
Magnesium metal does not burn in the jar of |
- A. N2
- B. O2
- C. Ne
- D. N2 and O2
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| 8 |
The crystals of caustic soda, NaOH, are hygroscopic when these crystals are exposed to air. |
- A. Gain water and remains solid
- B. Gain water and becomes liquid
- C. Lose mass and remain solid
- D. Remain unchanged on heating.
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| 9 |
The element cesium bears resemblance with |
- A. Ca
- B. Cr
- C. Both of the above
- D. None of the above
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| 10 |
Nelson's cell is used to prepare |
- A. NaOH
- B. Na<sub>2</sub>CO<sub>3</sub>
- C. Na metal
- D. NaCl
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