Chemistry - Complete Pblock- Question with Solution | TestHub
Number of following statements are given
(I) When Gallium solidify from liquid state there is decrease in density.
(II) Red phosphorous is insoluble in water but it become soluble in carbon disulphide.
(III) In solid boric acid one oxygen atom is associated with 2 hydrogen atoms.
(IV) In carbon suboxide maximum of two bonds share same nodal plane.
Which of the following option is correct
Options:
Answer:
Solution:
Statement (I) is correct: Gallium expands upon solidification, decreasing its density.
Statement (II) is incorrect: Red phosphorus is insoluble in carbon disulfide.
Statement (III) is correct: In solid boric acid (H₃BO₃), each oxygen atom is hydrogen-bonded to two hydrogen atoms from adjacent molecules.
Statement (IV) is correct: In C₃O₂, the linear structure O=C=C=C=O allows two bonds (from adjacent C=C and C=O) to share the same nodal plane.
Therefore, (I), (III), and (IV) are correct.