41.

Schottky defect is

• vacancy of ions

• delocalization of ions

• interstitial vacancy of ions

• vacancy of only cations

Assertion : bcc and hcp has same packing efficiency.

Reason : Both have same number of atoms per unit cell and same arrangement.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Reduction potential of Mn (+3 to +2) is more positive than Fe (+3 to +2).

Reason: Ionisation potential of Mn is more than that of Fe.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Assertion : Two different reactions can never have same rate of reaction.

Reason : Rate of reaction always depends only on frequency of collision and Arrhenius factor.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Assertion : A non volatile solute is mixed in a solution then elevation in boiling point and depression in freezing point both are 2 K.

Reason : Elevation in boiling point and depression in freezing point both depend on melting point of non-volatile solute.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Assertion : Rate of reaction of alkyl halide in Williamson's synthesis reaction is 1°RX > 2°RX > 3$°$RX.

Reason : It is a type of bimolecular substitution reaction (S_N2).

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

Find the hydrolysis product when a phosphodiester bond of nucleotide breaks.

• 3-OH-deoxyribose-5-PO${}_4^{3-}$

• 5-OH-deoxyribose-3-PO${}_4^{3-}$

• 2-OH-deoxyribose-2-PO${}_4^{3-}$

• 4-OH-deoxyribose-2-PO${}_4^{3-}$

Find the hydrolysis product of maltose.

• $\mathrm{\alpha }$-D-glucose + $\mathrm{\alpha }$-D-glucose

• $\mathrm{\alpha }$-D-glucose + $\mathrm{\alpha }$-D-fructose

• $\mathrm{\alpha }$-D-glucose + $\mathrm{\alpha }$-D-galactose

• $\mathrm{\alpha }$-D-fructose + $\mathrm{\alpha }$-D-galactose

Isoprene is

• 3-methyl-1,2-butadiene

• 2-methyl-1,3-butadiene

• 3-chloro-1,2-butadiene

• 2-chloro-1,3-butadiene.

Find the product for

CH₃CH₂-O-CH₂-CH₂-O-CH₂-C₆H₅+ HI (excess)

• HO-CH₂CH₂OH, C₆H₅CH₂-I, CH₃CH₂-I

• C₆H₅CH₂-OH, CH₃CH₂-I, I-CH₂CH₂-OH

• I-CH₂CH₂-I, C₆H₅CH₂-I, CH₃CH₂-OH

• HO-CH₂CH₂-OH, C₆H₅CH₂-I, CH₃CH₂-OH