25B [Definition of fundamental breach: substantial deprivation of expectation, etc.];

35A ; 35B [Conformity of goods to contract: quality, quantity and description required by contract; Requirements implied by law];

49A1 [Buyer's right to avoid contract (grounds for avoidance): fundamental breach of contract];

74A [General rules for measuring damages: loss suffered as consequence of breach];

78A [Interest on delay in receiving price or any other sum in arrears];

81C [Effect of avoidance on obligations: restitution by each party of benefits received];

84A [Restitution of benefits received: seller bound to refund price must pay interest]