The s-Block Elements NEET Questions : NEET Previous year Papers

1. Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field? (NEET 2017)

(a) K (b) Rb

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2. Which one of the alkali metals, forms only, the normal oxide, M₂O on heating in air? (2012)

(a) Rb (b) K

3. The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order (2012)

(a) Li⁺ < K⁺ < Na⁺< Rb⁺

(b) Rb⁺ < K⁺ < Na⁺< Li⁺

(d) Na⁺ < Li⁺ < K⁺ < Rb⁺

4. The sequence of ionic mobility in aqueous solutionis (2008)

(a) Rb⁺ > K⁺ > Cs⁺ > Na⁺

(b) Na⁺ > K⁺ > Rb⁺ > Cs⁺

(d) Cs⁺ > Rb⁺ > K⁺ > Na⁺

7. In the case of alkali metals, the covalent character decreases in the order (2009)

(a) MF > MCl > MBr > MI

(b) MF > MCl > MI > MBr

(d) MCl > MI > MBr > MF

8. The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the Following orders? (2008)

(a) NaH > LiH > KH > RbH > CsH

(b) LiH > NaH > KH > RbH > CsH

(d) KH > NaH > LiH > CsH > RbH

The s-Block Elements NEET Questions : NEET Previous year Papers

NEET Questions of The p-Block Elements Chapter All Previous year questions

The p-Block Elements NEET Questions : NEET Previous year questions

10. Which of the alkali metal chloride (MCl) forms its dehydrate salt (MCl.2H₂O) easily? (NEET 2019)

(a) LiCl (b) CsCl

11. Crude sodium chloride obtained by crystallization of brine solution does not contain (NEET 2019)

(a) MgSO₄ (b) Na₂SO₄

12. In Costner-Kellner cell for production of sodium hydroxide (NEET 2013)

(a) Brine is electrolyzed using graphite electrodes

(b) Molten sodium chloride is electrolyzed

(d) Brine is electrolyzed with Pt electrodes.

13. Which of the following statements is incorrect? (NEET 2011)

(a) Pure sodium metal dissolves in liquid ammonia to give blue solution.

(b) NaOH reacts with glass to give sodium silicate.

(d) NaHCO₃ on heating gives Na₂CO₃.

The s-Block Elements NEET Questions : NEET Previous year Papers

NEET Questions of The p-Block Elements Chapter All Previous year questions

The p-Block Elements NEET Questions : NEET Previous year questions

17. The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals. (NEET 2020)

(a) Iron (b) Copper

18. The function of “Sodium pump” is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump? (2015)

(a) K⁺ (b) Fe²⁺

19. Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s² 2s² 2p³, the simplest

Formula for this compound is (NEET 2018)

(a) Mg₂X₃ (b) MgX₂

23. HCl was passed through a solution of CaCl₂, MgCl₂ and NaCl. Which of the following compound(s) crystallize(s)? (NEET 2020)

(a) Both MgCl₂ and CaCl₂

(b) Only NaCl

(d) NaCl, MgCl₂ and CaCl₂

24. Which of the following is an amphoteric hydroxide? (NEET 2019)

(a) Be(OH)₂ (b) Sr(OH)₂

25. Among CaH₂, BeH₂, BaH₂, the order of ionic character is (NEET 2018)

(a) BeH₂ < CaH₂ < BaH₂

(b) CaH₂ < BeH₂ < BaH₂

(d) BaH₂< BeH₂ < CaH₂

The s-Block Elements NEET Questions : NEET Previous year Papers

NEET Questions of The p-Block Elements Chapter All Previous year questions

The p-Block Elements NEET Questions : NEET Previous year questions

26. On heating which of the following releases CO₂ most easily? (2015)

(a) Na₂CO₃ (b) MgCO₃

27. Solubility of the alkaline earth metal sulphates in water decreases in the sequence (2015)

(a) Sr > Ca > Mg > Ba (b) Ba > Mg > Sr > Ca

28. Which of the following compounds has the lowest melting point? (2011)

(a) CaCl₂ (b) CaBr₂

29. Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy? (2010)

(a) CaSO₄ (b) BeSO₄

The s-Block Elements NEET Questions : NEET Previous year Papers

NEET Questions of The p-Block Elements Chapter All Previous year questions

The p-Block Elements NEET Questions : NEET Previous year questions

30. Which one of the following compounds is a peroxide? (2010)

(a) KO₂ (b) BaO₂

31. Property of the alkaline earth metals that increases with their atomic number (2010)

(a) Solubility of their hydroxides in water

(b) Solubility of their sulphates in water

(d) Electronegativity

32. Which of the following oxides is not expected to react with sodium hydroxide? (2009)

(a) CaO (b) SiO₂

33. The correct order of increasing thermal stability of K₂CO₃, MgCO₃, CaCO₃ and BeCO₃ is (2007)

(a) BeCO₃ < MgCO₃ < CaCO₃ < K2CO₃

(b) MgCO₃< BeCO₃< CaCO₃ < K2CO₃

(d) BeCO₃ < MgCO₃ < K2CO₃ < CaCO₃

34. In which of the following the hydration energy is higher than the lattice energy? (2007)

(a) MgSO₄ (b) RaSO₄

38. In context with beryllium, which one of the following statements is incorrect? (NEET-II 2016)

(a) It is rendered passive by nitric acid.

(b) It forms Be2C.

(d) Its hydride is electron-deficient and polymeric.

39. The suspension of slaked lime in water is known as (NEET-II 2016)

(a) Lime water (b) quick lime

40. The product obtained as a result of a reaction of nitrogen with CaC₂ is (NEET-I 2016)

(a) CaCN₃ (b) Ca₂CN