Quiz for Group 1 and 2 elements

Q1: Which of the following is the most reactive alkali metal?

A. Li B. Na C. K D. Cs

Q2: Which alkali metal has the smallest atomic radius?

A. Li B. Na C. K D. Rb

Q3: Which alkaline earth metal is most soluble in water as hydroxide?

A. Be B. Mg C. Ca D. Ba

Q4: Flame color of sodium is?

A. Lilac B. Yellow C. Brick red D. Green

Q5: Which of the following shows diagonal relationship with Li?

A. Na B. Be C. Mg D. K

Q6: Which metal does not impart color to flame?

A. Be B. Mg C. Ca D. Sr

Q7: Which compound is used in toothpaste?

A. Na₂CO₃ B. CaCO₃ C. BaSO₄ D. Mg(OH)₂

Q8: Which Group 2 element shows amphoteric nature?

A. Ca B. Sr C. Be D. Ba

Q9: Which metal carbonate decomposes at lowest temperature?

A. BeCO₃ B. CaCO₃ C. BaCO₃ D. SrCO₃

Q10: Which of the following is least basic?

A. Mg(OH)₂ B. Ca(OH)₂ C. Sr(OH)₂ D. Ba(OH)₂

Q11: The formula of Plaster of Paris is?

A. CaSO₄·2H₂O B. CaSO₄·½H₂O C. CaSO₄ D. Ca(OH)₂

Q12: Which of the following is hygroscopic?

A. CaCl₂ B. NaCl C. KNO₃ D. MgSO₄

Q13: Which element is stored in kerosene?

A. Na B. Mg C. Ca D. Be

Q14: Which of the following shows +1 oxidation state only?

A. Be B. Mg C. Na D. Ca

Q15: Which alkali metal forms superoxide?

A. Li B. Na C. K D. Rb

Q16: Hardness of water is due to presence of?

A. Na⁺ B. Ca²⁺ C. K⁺ D. H⁺

Q17: Which compound is used to remove permanent hardness?

A. NaCl B. CaCO₃ C. Na₂CO₃ D. MgSO₄

Q18: Alkaline earth metals form?

A. Basic oxides B. Acidic oxides C. Neutral oxides D. None

Q19: Which element has highest hydration energy?

A. Li⁺ B. Na⁺ C. K⁺ D. Rb⁺

Q20: Which ion does not impart flame color?

A. Li⁺ B. Be²⁺ C. Ca²⁺ D. K⁺