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In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.
In this question, three statements are given followed by four conclusions. Choose the Conclusion(s) which best fit(s) logically. Statements : 1) All gold are platinum. 2) Some platinum are silver. 3) All silver are diamonds. Conclusions : I. Some diamonds are platinum. II. Some diamonds are gold. III. Some silver are gold. IV. Some platinum are diamonds.
The owner of PC Jewellers has a brick of 38 pt. platinum and 19 pt. platinum. He wanted to obtain a brick of 30 pt. platinum, weighing 190 grams by melting these 2 bricks. Find how much of each must be melted to obtain the required bar? (Given: pure platinum is 95 pt.)
A container contains 20 L mixture in which there is 10% sulphuric acid. Find the quantity of sulphuric acid to be added in it to make the solution to contain 25% sulphuric acid.
Read the statement and decide which conclusions are correct.
Statement:
Sulphuric acid is acidic in nature.
Conclusion:
1. The pH value of sulphuric acid is 7.5.
2. Sulphuric acid contains some phosphorus.
Which of the following option is correct about the use of mineral acids? Sulphuric acid is used in the manufacture of fertilizers like ammonium sulfate, paints, dyes, chemicals. Nitric acid is used for making fertilizers like ammonium phosphate, explosives like TNT: Tri-Nitro Toluene, dyes, and plastics.
Aqua regia is also known as royal water or king's water which can dissolve noble metals gold and platinum is a mixture of: (a) Hydrochloric acid (b) Hydrobromic acid  (c) Nitric acid (d) Sulphuric acid
Which of the following chemicals are used to treat the instruments made out of polymers? i) Ethylene Oxide ii) Hydrochloric Acid iii) Silver Cyanide iv) Ozone v) Bleach vi) Saline Solution vii) Sulphuric Acid viii) Glutaraldehyde and Formaldehyde ix) Phthalaldehyde x) Hydrogen Peroxide xi) Nitric Acid xii) Peracetic Acid xiii) Silver xiv) Formic Acid xv) Citric Acid
In sulphuric acid plants dry air is used for burning of sulphur. Air is dried in contact with concentrated Sulphuric acid. Moisture diffuses through a layer of air, reaches the surface and gets absorbed in it. Here air is said to be non-diffusing were as moisture is diffusing. Which of the following statements are correct?
Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively