Scurvy is caused due to deficiency of:
To solve the problem, we need to identify the cause of scurvy, specifically which nutrient deficiency leads to this condition.
1. Understanding Scurvy:
Scurvy is a disease historically associated with sailors and others deprived of fresh fruits and vegetables for extended periods. It is characterized by symptoms such as bleeding gums, poor wound healing, and fatigue.
2. Identifying the Deficiency:
Scurvy is caused by a deficiency of Vitamin C (ascorbic acid), a water-soluble vitamin essential for collagen synthesis, antioxidant functions, and connective tissue health. Lack of Vitamin C disrupts these processes, leading to the symptoms of scurvy.
3. Considering Other Possibilities:
Other vitamin deficiencies cause distinct diseases (e.g., Vitamin D deficiency causes rickets, Vitamin B1 deficiency causes beriberi). No other nutrient deficiency is associated with scurvy, confirming Vitamin C as the correct answer.
Final Answer:
Scurvy is caused due to the deficiency of Vitamin C.
Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.
(i) (CH3 )2CHNH2 (ii) CH3 (CH2 )2NH2 (iii) CH3NHCH(CH3 )2
(iv) (CH3 )3CNH2 (v) C6H5NHCH3 (vi) (CH3CH2 )2NCH3 (vii) m–BrC6H4NH2
Give one chemical test to distinguish between the following pairs of compounds.
(i) Methylamine and dimethylamine
(ii) Secondary and tertiary amines
(iii) Ethylamine and aniline
(iv) Aniline and benzylamine
(v) Aniline and N-methylaniline
Account for the following:
(i) pKb of aniline is more than that of methylamine.
(ii) Ethylamine is soluble in water whereas aniline is not.
(iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
(iv) Although amino group is o– and p– directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.
(v) Aniline does not undergo Friedel-Crafts reaction.
(vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines. (vii) Gabriel phthalimide synthesis is preferred for synthesising primary amines.
Assertion (A): Vitamin D cannot be stored in our body.
Reason (R): Vitamin D is fat-soluble vitamin and is not excreted from the body in urine.
Why can't vitamin C be stored in our body?