There are two types of fertilisers `F_1` and `F_2, F_1` consists of `10%` nitrogen and `6%` phosphoric acid and `F_2` consists of `5%` nitrogen and `10%` phosphoric acid. After testing the soil conditions , a farmer finds that she needs atleast 14kg of nitrogen and 14kg of phosphoric acid for her crop. If `F_1` costs Rs. `6/(kg)` and `F_2` costs Rs. `5/(kg)` , determine how much of each type of fertiliser should be used so that nutrient requirements are met at a minimum cost , What is the minimum cost ?

A fruit grower can use two types of fertilizers in his garden , brand P and Q . The amounts (in kg ) of nitrogen , phosphoric acid , potash and chlorine in a bag of each brand are given in the table. Tests indicate that the garden needs atleast 240 kg of phosphoric acid , atleast 270 kg of potash and atmost 310 kg of chlorine. If the grower wants to minimise the amount of nitrogen added to the garden, how many bags of each brand should be used ? What is the minimum amount of nitrogen added in the garden ?

Small amounts of phosphoric acid is usually added to hydrogen peroxide to prevent its decomposition ? What is the function of phosphoric acid here ?

Compounds of nitrogen, phosphorus and sulphur such as ammonia, phosphoric acid and sulphuric acid are used in fertilizer industry. Write the chemical equation for the preparation of phosphoric acid (H_3PO_4) from H_3PO_3

Aqueous solution of phosphoric acid with a density of 1 g mL^(-1) containing 0.05% by weight of phosphoric acid is used to impart taste to many soft drinks. What is the molarity of phosphoric acid used in soft drinks ?

Atomic mass of nitrogen is 14 which of these sample contains 6.022 xx 10^23 Nitrogen atoms? (7g Nitrogen, 14g Nitrogen, 28gNitrogen, 1g Nitrogen)

Reshma wishes to mix two types of food P and Q in such a way that the vitamin contents of the mixture contain atleast of 8 units of the vitamine A and 11 units of vitamine B. Food P costs Rs . (60)/(kg) and Food Q costs Rs. (80)/(kg) . Food P contains 3 (units)/(kg) of vitamine A and 5 (units)/(kg) of vitamine B. While food Q contains 4 (unit)/(kg) of vitamine A and 2 (unit)/(kg) of vitamine B. Determine the minimum cost of the mixture.

The cost of 4 kg onion, 3 kg wheat and 2 kg rice is Rs. 60 . The cost of 2 kg onion, 4 kg wheat and 6kg rice is Rs. 90 . The cost of 6 kg onion, 2 kg wheat and 3 kg ricę is Rs. 70 . Find cost of each item per kg by matrix method.

Compounds of nitrogen, phosphorus and sulphur such as ammonia, phosphoric acid and sulphuric acid are used In fertilizer industry:- Describe contact process for the manufacture of sulphuric acid.

Compounds of nitrogen, phosphorus and sulphur such as ammonia, phosphoric acid and sulphuric acid are used in fertilizer industry. Describe Haber process for the manufacture of ammonia.