std 7 science ch 2 swadhyay pothi , dhoran 7 vigyan swadhyay pothi , dhoran 7 swadhyay pothi vigyan

Calculate the difference in the molecular formulae and molecular masses for: (a) CH_(3)OH "and" C_(2)H_(5)OH (b) (a) C_(2)H_(5)OH "and" C_(3)H_(7)OH (c )(a) C_(3)H_(7)OH "and" C_(4)H_(7)OH (i) Is there any similarity in these three? (ii) Arrange these alcohols in the order of increasing crbon atoms to get a family . Can we call this family a homologous series?

Structures and IUPAC names of some hydrocarbons are given below. Explain why the names given in the parentheses are incorrect. underset(["and not 3,4,7-Trimethyloctane"])underset(2,5,6- "Trimethyloctane")(CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)(CH)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3)) underset(["and not 5-Ethyl-3-methylheptane"])underset("3-Ethyl-5-methylheptane")(CH_(3)-CH_(2)-underset(CH_(2)CH_(3))underset(|)(CH)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3))

An aromatic compound 'A' of molecular formula C_(7)H_(7)ON undergoes a series of reactions as shown below. Write the structures of A, B, C, D and E in the following reactions : (C_(7)H_(7)ON) (A) overset(Br_(2)+KOH)(to) underset((D))underset(darrCHCl_(3)+NaOH)(C_(6)H_(5)NH_(2)) underset(273K)overset(NaNO+HCl)(to) underset((E))underset(darrKI)((B)) overset(CH_(3)CH_(2)OH)(to) (C)

The type of isomerism due to different types on alkyl groups on either side of the functional group of compounds CH_3CH_2COCH_2CH_3 and CH_3COC_3C_7 is referred as

On which side of neutrality (pH-7) , the isoelectric point of the following amino acids will lie ? (a) H-underset(underset(NH_(2))(|))(CH)-COOH (b) underset(underset(CH_(2)-CH_(2)-COOH)(|))(H_(2)N-CH-COOH) ( c) underset(underset((CH_(2))_(4)-NH_(2))(|))(H_(2)N-CH-COOH) .