Question : Which one among the following nutrients is a structural component of the cell of plants?
A. Calcium
B. Phosphorous
C. Potassium
D. Manganese
Question Listed : Plant, Tree, Calcium,
Question : Which one of the following mineral elements is required for muscle contraction?
A. Zinc
B. Sodium
C. Iron
D. Calcium
Question Listed : Calcium, Nutrition,
Question : The main constituents of pearls are
A. ammonium sulphate and sodium carbonate
B. aragonite and conchiolin
C. calcium carbonate and magnesium carbonate
D. calcium oxide and ammonium chloride
Question Listed : Calcium Carbonate, Magnesium Carbonate, Elements, Metals,
Question : Paper is manufactured by
A. Wood and bleaching powder
B. Wood, calcium, hydrogen sulphite and resin
C. Wood, sodium and bleaching powder
D. Wood and resin
Question Listed : Wood, Calcium, Hydrogen Sulphite, Resin, Synthetic Material,
Question : Which one among the following substances evolves heat when dissolved in water?
A. Sodium chloride
B. Glucose
C. Calcium oxide
D. Potassium nitrate
Question Listed : Calcium Oxide, Chemical,