Sample Paper – 2012 Class – X Subject –Chemistry Chemical Equations and reactions Very Short Answer (1 marks each) Write the name and formula of compounds forms between a. Potassium and iodine ion .b.Sodium and sulphide ions . c. Aluminums and chloride ions 2. Why does milk sour when kept for a long time/ 3. What happen when hydrogen combine with oxygen in presence of electric current/ 4. Define electrolysis. 5. What is decomposition reaction? Give an
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1.1. Equations and Graphs In each of problems 1 - 4‚ find (a) an ordered pair that is a solution of the equation‚ (b) the intercepts of the graph‚ and (c) determine if the graph has symmetry. 1. 2. 3. 4. 5. Once a car is driven off of the dealership lot‚ it loses a significant amount of its resale value. The graph below shows the depreciated value of a BMW versus that of a Chevy after years. Which of the following statements is the best conclusion about the data? a. You should
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equilibrium are that the net force acting on the object is zero‚ and the net torque acting on the object is zero. In the experiment done‚ conditions for equilibrium are observed. Equilibrant forces were determined using the force table and component methods. The unknown forces were also determined using the first and second conditions for equilibrium. Another part of the experiment was to locate the center of gravity of a composite body and to determine rotational equilibrium. 2. Theory An object at
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Chemical Reactions and Equations Chemical Reaction: The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance
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Financial Analysis and Forecasting 35 MARK X COMPANY (A) Mark X Company manufactures farm and specialty trailers of all types. More than 85 percent of the company’s sales come from the western part of the United States‚ particularly California‚ although a growing market for custom horse transport vans designed and produced by Mark X is developing nationally and even internationally. Also‚ several major boat companies in California and Washington have had Mark X design and manufacture trailers for their
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_________________ Teacher: _______________ Reviewer: Quadratic Equations I. Multiple Choice: Choose the letter of the correct answer. Show your solution. 1. What are the values of x that satisfy the equation 3 – 27x2 = 0? A. x = [pic]3 B. x = [pic] C. x = [pic] D. x = [pic] 2. What are the solutions of the equation 6x2 + 9x – 15 = 0? A. 1‚ - 15 B. 1‚ [pic] C. – 1‚ - 5 D. 3‚ [pic] 3. For which equation is – 3 NOT a solution? A. x2 – 2x – 15 = 0 C. 2x2
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meanings for a family. You might have listened to people saying “my family is incomplete without you” or like that. This means family is a place where only addition takes place. If you are a married man and your wife has given birth to child then you can say that your family is complete by this child. It doesn’t mean that your family was incomplete without that child. You and your wife were living happily but you have become happier by the entry of new guest. Thus family is a place where only addition
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CASE STUDY ON MONOPOLY Submitted By: Submitted On: 16th April 2012 INTRODUCTION Today‚ many firms are enjoying a monopoly of their products/services in the market. Monopoly may be defined as the complete control over a commodity enjoyed by a particular company in the market. There will be only a solo manufacturer or provider of the commodity and customers have to depend on them whenever there is a demand since there are no substitutes available. As a result‚ such
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Workshop SPSS to APA: Making SPSS Automatically Format Tables in APA Style J.J. Roth (ARL Graduate Assistant) November 10‚ 2011 Topics • • • • Create a variable and input data Create a table for editing Edit the format of an SPSS table Create a template‚ or “TableLook‚” that aligns with APA guidelines • Apply the TableLook and view the reformatted table • Change the default TableLook in SPSS 2 SPSS Default Format 3 APA Table Format 4 Create a Variable • Open SPSS • Under
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Direct Combination or Synthesis Reaction In a synthesis reaction two or more chemical species combine to form a more complex product. A + B ? AB The combination of iron and sulfur to form iron (II) sulfide is an example of a synthesis reaction: 8 Fe + S8 ? 8 FeS Learn More About Synthesis Reactions Chemical Decomposition or Analysis Reaction In a decomposition reaction a compound is broken into smaller chemical species. AB ? A + B The electrolysis of water into oxygen and hydrogen gas is an example
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