(A) alkaline aquenous iodine ()
(B) aqueous bromine. (X)
(C) Fehling solution. (X)
(D) aqueous NaOH. (X)

Answers: alkaline aquenous iodine

(A) n2a/v correct for the intermolecular forces. (X)
(B) nb correct for the volume occupied by gas molecules. (X)
(C) at high densities the equation reduces to the ideal gas law ()
(D) all of the above statements are correct. (X)

Answers: at high densities the equation reduces to the ideal gas law

(A) Quantum structure (X)
(B) Secondary structure ()
(C) Tertiary structure (X)
(D) Primary structure (X)

Answers: Regular coiling or zigzagging of polypeptide through hydrogen bonding is its Secondary structure.

(A) Pb3 O4 ()
(B) 2Pb CO3 – Pb (OH)2 (X)
(C) Pb Cr O4 – Pb (OH)2 (X)
(D) Pb2O (X)

Answers: Pb3 O4

(A) IIIA group (X)
(B) IVA group ()
(C) VA group (X)
(D) VIA group (X)

Answers: Across short period the melting and boiling point increase upto IVA group.

(A) Si (X)
(B) As (X)
(C) Te (X)
(D) None of the above ()

Answers: Which of the elements do not fall in stair case of the modern periodic table None of the above.