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Name the gas libe rated when ethanol reacts with S odium metal? How do we get ethe ne from ethanol? Write chemical equation to justify your answer. State the role of acid in this reaction. CBSE class10 Science 20161 AnswerA compound ‘X’ on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound ‘Y’. ‘X’ also reacts with sodium metal to evolve a colourless gas ‘Z’. Identify ‘X’, ‘Y’ and ‘Z’. Write the equation of the chemical reaction of formation of ‘Y’ and also write the role of sulphuric acid in the reaction.1 AnswerWrite the structural formula of ethanol. What happens when it is heated with excess of conc. H 2 SO 4 at 443 K ? Write the chemical equation for the reaction sta ting the role of conc. H 2 SO 4 in this reaction. Chemistry 1 Answer2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.1 AnswerSaccharomyces cerevisiae produces ethanol by fermentation.-gate biotech 20151 AnswerSaccharomyces cerevisiae produces ethanol by fermentation.-gate biotech 20151 AnswerList two physical and two chemical properties of acetic acid which a student can test in the school laboratory. CBSE class10 Science 20161 AnswerWhat is observed when a solution of sodium sulphate is added to a solution of barium chloride taken in a test tube ? Write equation for the chemical reaction involved and name the type of reaction in this case.1 AnswerWhat are the hydrocarbons? Distinguish alkanes from alke nes and each of them from alkynes giving one example of each. Also draw the structure s of each compound cited as example to justify your answer . CBSE class10 Science 20161 AnswerState the meaning of “biodiversity”. List one advantage each of conserving f orests and wild life. CBSE class10 Science 20161 AnswerA n azeotropic mixture of ethanol and water is to be separated in a distillation column using benzene as an entrainer. At the column operating conditions, two liquid phases are formed on a tray. The degree(s) of freedom of the system for the choice of intensive properties at equilibrium is(are) ___________0 AnswerState and describe in brief any three main factors responsible for the rise of new species. CBSE class10 Science 20161 Answer Read the passage given above carefully and answer the following questions: - CBSE Class 12 Humanities - Political Science 20161 AnswerLysine is being produced in a lab-scale reactor by a threonine auxotroph. After 2 weeks of operation it was observed that the concentration of lysine in the reactor was gradually decreasing. Microbiological assays of reactor samples showed absence of1 AnswerWhich of the two is a better option : CBSE class10 Science 20161 AnswerArrange the following compounds in increasing order of their property as indicated. CBSE- Class12- Chemistry 20151 AnswerIf the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it? Draw a ray diagram to justify your answer. Where and why do we general1 AnswerWhen you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with brisk effervescence. Name this gas. Describe the method of testing this gas. CBSE- class10- Science 20151 AnswerWhat happens when a small piece of sodium is dropped into ethanol? CBSE Chemistry1 AnswerWhat happens when a small piece of sodium is dropped into ethanol? CBSE Chemistry1 Answer
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Name the gas libe rated when ethanol reacts with S odium metal? How do we get ethe ne from ethanol? Write chemical equation to justify your answer. State the role of acid in this reaction. CBSE class10 Science 2016
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