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Which of the following statements is correct regarding the oxidation number of Oxygen? I. The oxidation number of Oxygen in most compounds is -2. II. When Oxygen is bonded to Fluorine in compounds like Oxygen difluoride and Dioxygen diflouride, the Oxygen is assigned an oxidation number of +2 and +2 respectively. III. In peroxide, an Oxygen atom is assigned an oxidation number of -1 and in Superoxide, each oxygen atom is assigned an oxidation number of -1/2.
Consider the following statements relating to salt production in India : 1. India is the second-largest producer of salt in the world next only to China. 2. Salt mining is carried out in Himachal Pradesh. 3. Gujarat is the leading producer of salt in India. 4. Groundwater is an important source of salt in Rajasthan. Which of the statements given above are correct?
Consider the following statements about the Salt March: 1. The Salt March was deliberately ignored by the European media. 2. The Salt March was widely covered by the American and European press. 3. The Salt March was the first nationalist activity in which women participated in large numbers. 4. The Salt March impressed upon the British the urgent need to devolve more power to Indians. Which of the statements given above are correct?
Consider the following statements about the Salt March :1.The Salt March was deliberately ignored by the European media.2.The Salt March was widely covered by the American and European press.3.The Salt March was the first nationalist activity in which women participated in large numbers.4.The Salt March impressed upon the British the urgent need to devolve more power to Indians.Which of the statements given above are correct?
Rearrange the following sentences in a meaningful order. A. One day the donkey suddenly tumbled down the stream and the salt bag also fell into the water. B. On the way they had to cross a stream.  C. The salt dissolved in the water and hence the bag became very light to carry. D. A salt seller used to carry the salt on his donkey to market every day. 
Leena and her sister wanted to prepare a 50 ml saturated solution of common salt in water in order to prepare mango pickle. After adding sufficient salt and water and stirring it, they found some salt remaining undissolved in the solution. Which of the following methods can be used to completely dissolve the salt?
Given below are six sentences 4 of which are jumbled. The first and the last sentence are given. Pick the option that gives the logically correct order of the four sentences. S-1 A salt seller used to carry the salt bag on his donkey to the market every day. A: One day the donkey suddenly tumbled down the stream and the salt bag also fell into the water. B: The donkey was happy. C: On the way, they had to cross a stream. D: The salt dissolved in the water and hence the bag became very light to carry. S-6 Then the donkey started to play the same trick every day.
A vessel containing 3 litres of a salt-solution contains 10% salt. How much water should be added more to the salt solution so that it contains 5% of salt?
Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Quantity A∶  A 30 litre mixture of wine and water has wine and water in the ratio 5∶ 7. How much water must be drawn off so that the ratio of wine and water becomes 25∶ 19? Quantity B∶ A 35 litre mixture of wine and water has wine and water in the ratio 1∶ 3. How much water must be drawn off so that the ratio of wine and water becomes 1.75∶ 3.35? Quantity C∶ A 27 litre mixture of wine and water has wine and water in the ratio 3∶ 2. How much water must be drawn off so that the ratio of wine and water becomes 81∶ 11?
In a well aerated and agitated microbial culture, the 'supply' of oxygen is equal to 'demand' (uptake) of the growing culture. The KLa for such a system will be (KLa = volumetric mass transfer coefficient, C* = dissolved oxygen concentration in liquid in equilibrium with gaseous oxygen, C = instantaneous value of dissolved oxygen concentration, 'r' = specific oxygen uptake rate per unit weight of cells, X = dry weight of the cells per unit volume)