(A) The deficiency of Vitamin $B_{12}$ (cyanocobalamin) leads to pernicious anemia,which is characterized by a decrease in the number of red blood cel

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(A) The deficiency of Vitamin $B_{12}$ (cyanocobalamin) leads to pernicious anemia,which is characterized by a decrease in the number of red blood cells ($RBC$s) and the production of abnormally large,immature $RBC$s.

Class 12 Chemistry Biomolecules Vitamins

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The $RBC$ deficiency is a deficiency disease of:

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A
Vitamin $B_{12}$
B
Vitamin $B_{6}$
C
Vitamin $B_{1}$
D
Vitamin $B_{2}$

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Biomolecules

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What is the chemical name of Vitamin $B_{12}$?

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Which vitamin deficiency causes the disease known as scurvy?

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Match the following vitamins with their sources and the corresponding diseases caused by their deficiency.
Vitamins Sources and Diseases
$(A)$ $Vitamin-B_1$ $(i)$ Egg-whites,$(p)$ Convulsions
$(B)$ $Vitamin-B_2$ $(ii)$ Fish,$(q)$ Pernicious anemia
$(C)$ $Vitamin-B_6$ $(iii)$ Green vegetables,$(r)$ Cheilosis
$(D)$ $Vitamin-B_{12}$ $(iv)$ Grams,$(s)$ Beri-Beri

Vitamins	Sources and Diseases
$(A)$ $Vitamin-B_1$	$(i)$ Egg-whites,$(p)$ Convulsions
$(B)$ $Vitamin-B_2$	$(ii)$ Fish,$(q)$ Pernicious anemia
$(C)$ $Vitamin-B_6$	$(iii)$ Green vegetables,$(r)$ Cheilosis
$(D)$ $Vitamin-B_{12}$	$(iv)$ Grams,$(s)$ Beri-Beri

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