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Measurement of KLa in a bioreactor can be carried out by sodium sulfite oxidation method, that is, based on the oxidation of sodium sulfite to sodium sulfate in the presence of a catalyst (Cu++ or Co++). In a typical experiment, a laboratory fermenter was filled with 5 liter of 0.5 M sodium sulfite solution containing 0.003 M Cu++ ions and the air was sparged in. After 10 min, the air flow was stopped and a 10 mL sample was taken and titrated. The concentration of sodium sulfite in the sample was found to be 0.20 M. The oxygen uptake rate for this aerated system will work out to be
Aqueous solution of following compounds electrolysed separately, Acetylene gas is obtained from:- (i) Sodium fumerate      (ii) Sodium maleate      (iii) Sodium succinate      (iv) Sodium acetate
With reference to street-lighting, how do sodium lamps differ from LED lamps? 1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps. 2. As street lights, sodium lamps have a longer life span than LED lamps. 3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting. Select the correct answer using the code given below.  
What is the film called, that is formed by the viscose solution of sodium cellulose xanthate?
How is sodium or potassium xanthate purified?
Which of the following statements is/are true/false? A. An acid which is completely ionized into ions and produces a large number of H+ ions. For example HCl, H2 SO4, HNO3 B. An acid which is partially ionized in water and produces less number of H+ ions. For example CH3COOH, H2CO3, H2SO2
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH- ions. III. Bases are bitter in taste and generate OH- ions.
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH– ions. III. Bases are bitter intaste and generate OH– ions.
Which one of the following statements is not true/false?
1. An acid that is completely ionized with ions produces large amounts of H+ ions. for example HCl, H2SO4, HNO3
2. A weak acid that is partially ionized in water produces small amounts of H+ ions. for example - CH3COOH, H2CO3, H2SO3
How many sodium ions are transported for every 2 potassium ions by the Na-K pump?