Chemistry - Complete Pblock- Question with Solution | TestHub

Consider the following reactions (ignore balancing):

Na₂B₄O₇ + HCl + H₂O → (A) + NaCl

NH₄NO₂ $\stackrel{\Delta }{\to }$ (B) + H₂O

How many of the following statements are CORRECT regarding (A) and (B)?

(i) (A) is a weak monobasic Lewis acid.

(ii) (A) has a layered structure with intermolecular hydrogen bonding.

(iii) (B) is paramagnetic.

(iv) (B) is used to provide an inert atmosphere.

(v) (A) on strong heating gives B₂O₃.

(vi) The bond angle about boron in (A) is 120°.

(vii) (A) is a tribasic acid.

(viii) (B) is a colored gas.