S Block Elements Mock Tests

19 questions available

S Block Elements Mock Test 1

Questions: 19

Sample Questions

EAPCET Chemistry

What is the product when Na reacts with excess O₂?___SEQ___28

A Na₂O₂ (sodium peroxide)

B Na₂O (sodium oxide)

C NaO₂ (sodium superoxide)

D NaO (sodium monoxide)

EAPCET Chemistry

Which of the following properties does NOT show a diagonal relationship between lithium and magnesium?

A Both are strong reducing agents in aqueous solution

B Both form nitrides directly with nitrogen

C Both hydroxides are weak bases

D Both carbonates decompose on heating

JEE Main Chemistry

Which of the following reactions produces CO₂ gas?

A NaHCO₃ + NaOH

B Na₂CO₃ + HCl

C NaHCO₃ + HCl

D NaOH + HCl

EAPCET Chemistry

Which of the following statements about calcium and magnesium in biological systems is INCORRECT?

A Magnesium is a component of chlorophyll in plants

B Magnesium is the primary structural component of bones and teeth

C Calcium is essential for blood clotting

D Calcium is the primary structural component of bones and teeth

CUET Chemistry

The correct increasing order of lattice energy for alkali metal chlorides is:

A LiCl < NaCl < KCl < RbCl < CsCl

B CsCl < RbCl < KCl < NaCl < LiCl

C NaCl < LiCl < KCl < RbCl < CsCl

D LiCl < KCl < NaCl < RbCl < CsCl

EAPCET Chemistry

Plaster of Paris is obtained by heating CaSO₄·2H₂O to 393 K. What happens when it is heated above 393 K?

A It forms CaO

B It loses all water of crystallisation and becomes anhydrous CaSO₄ (dead burnt plaster)

C It becomes more hygroscopic

D It decomposes to CaSO₃ and SO₃

CUET Chemistry

The correct order of hydration enthalpy for alkali metal ions is:

A Li⁺ > Na⁺ > K⁺ > Rb⁺ > Cs⁺

B Cs⁺ > Rb⁺ > K⁺ > Na⁺ > Li⁺

C Na⁺ > Li⁺ > K⁺ > Rb⁺ > Cs⁺

D Li⁺ < Na⁺ < K⁺ < Rb⁺ < Cs⁺

EAPCET Chemistry

Which of the following is NOT a similarity between lithium and magnesium?

A Both form nitrides directly with nitrogen

B Both form soluble carbonates that do not decompose on heating

C Both form hydroxides that are only sparingly soluble

D Both form monoxides on burning in oxygen

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