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Vitamins protect our bodies from diseases and illness. Select the incorrect statement(s) with respect to vitamins from the codes given below: A. Deficiency of vitamin A makes our bones weak.  B. Deficiency of iron causes paleness.  C. Deficiency of vitamin D causes swollen and bleeding gums.  D. The deficiency of vitamin B helps to increase our appetite. 
Laboratory test for iron deficiency anemia shows
Consider the following statements: I. Anaemia is a disease which is caused by the deficiency of iron. II. Beri Beri is caused due to deficiency of Vitamin B1. III. Bleeding diseases is caused due to deficiency of Vitamin E. IV. The disease which leads to the abnormal enlargement of thyroid gland is goitre. Which of these is/are correct?
Which of the following are not chemical changes? 1. Tempering of iron 2. Conversion of the iron piece into an electro-magnet by passing the current around the iron 3. Melting of iron 4. Rusting of iron Select the correct answer using the code given below:
Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is
Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
Iron deficiency 'anemia may be associated with
In iron deficiency anemia
An iron deficiency anemia due to chronic blood loss is characterized by a raised
Usual laboratory features of iron deficiency anemia are