[" (78) Select the pairs of sedimentary biogeschemical ques."],[" 1.Hydrogen cycle and water cyde "],[" il.Phosphorus cyde and sulphur oyde "],[" ill.Calcium cyde and magnesium cyde "],[" IV.Carbon cyde and nitrogen gyde "]

Select the pairs of sediamentary biogeochemical cycles. I. Hydrogen cycle and water cycle II. Phosphorus cycle and sulphur cycle III. Calcium cycle and magnesium cycle IV. Carbon cycle and nitrogen cycle

Select the pairs of sediamentary biogeochemical cycles. I. Hydrogen cycle and water cycle II. Phosphorus cycle and sulphur cycle III. Calcium cycle and magnesium cycle IV. Carbon cycle and nitrogen cycle

Select the pairs of sediamentary biogeochemical cycles. I. Hydrogen cycle and water cycle II. Phosphorus cycle and sulphur cycle III. Calcium cycle and magnesium cycle IV. Carbon cycle and nitrogen cycle

Select the pairs of sediamentary biogeochemical cycles. I. Hydrogen cycle and water cycle II. Phosphorus cycle and sulphur cycle III. Calcium cycle and magnesium cycle IV. Carbon cycle and nitrogen cycle

Select the pairs of sedimentary biogeochemical cycles. I) Hydrogen cycle and water cycle II) Phosphorus cycle and sulphur cycle III) Calcium cycle and magnesium cycle IV) Carbon cycle and nitrogen cycle

Some of the nutrient cycles are labelled as below. 1. Sulphur cycle, Phosphorus cycle, 3. Carbon cycle and 4. Nitrogen cycle. Of these, the sedimentary cycle is represented by:

Write the balanced chemical equations for the following reactions : (i) "Hydrogen + Chlorine " to " Hydrogen chloride" (ii) "Magnesium oxide + Carbon " to " Magnesium + Carbon monoxide" (iii) "Phosphorus pentachloride + Water " to " Phosphoric acid + Hydrogen chloride" (iv) "Sulphur dioxide + Oxygen " to " Sulphur trioxide" (v) "Sodium + Water " to " Sodium hydroxide + Hydrogen" .

Write the balanced chemical equations for the following. (i) Sodium nitrite is produced by absorbing the oxide of nitrogen in aqueous solution of washing soda. (ii) Nitrogen is obtained in the reaction of aqueous ammonia with potassium permanganata. (iii) Elemental phosphorus reacts with concentrated HNO_(3) to given phosphoric acid. (iv) Sulphur is precipitated in the reaction of hydrogen sulphide with sodium bisulphite solution. (v) Carbon dioxide is passed through a suspension of limestone in water.