II PUC – CHEMISTRY (34) MODEL QUESTION PAPER - 1 Time: 3hours 15 minutes Maximum marks: 70 Instructions: 1. The question paper has four parts: A‚ B‚ C and D. All parts are compulsory. 2. Write balanced chemical equations and draw labeled diagrams wherever required. 3. Use log tables and the simple calculator if necessary. (Use of scientific calculators is not allowed) PART-A I. Answer ALL of the following. (Each question carries 1 mark) 10x1=10 (Answer each question in one word or
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Probability 2 Theory Probability theory is the branch of mathematics concerned with probability‚ the analysis of random phenomena. (Feller‚ 1966) One object of probability theory is random variables. An individual coin toss would be considered to be a random variable. I predict if the coin is tossed repeatedly many times the sequence of it landing on either heads or tails will be about even. Experiment The Experiment we conducted was for ten students to flip a coin one hundred times
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knots‚ but it is capable of attaining 20 knots in short bursts. The maximum reported depth reached by the species is 194 fathoms. It is capable of remaining submerged beneath the surface for 50 minutes‚ although 10 to 15 minutes is more typical. The life span of a blue whale is about 30 years. The calves measure 7 m at birth and weigh about 2 tons. By the time they are a year old‚ the youngsters measure 18 m. Blue whales comprised about 90 percent of the whaling industry’s total catch during the
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of the presence of a chemical called adenosine‚ in your brain. It binds to certain receptors and slows the nerve cell activity when sleep is signaled. 5. Anaerobic fermentation is also a great concept which is present in the chemistry of everyday life. It is present in yogurt‚ breads‚ cakes and many other baking products. It is the multiplication of certain useful bacteria which increase the size of the food and make it more filling and soft. 6. Soap is formed by molecules with a "head" which likes
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shapes and their properties in our daily life problems. Plane geometry - It is about all kinds of two dimensional shapes such as lines‚ circles and triangles. Solid geometry - It is about all kinds of three dimensional shapes like polygons‚ prisms‚ pyramids‚ sphere‚ cylinder. The word Geometry comes from Greek which means earth and metron. Geometry used in variousobjects such as surveying‚ astronomy‚ navigation and building etc of daily life application. Geometry is actually called as Euclidean
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1.1 Applications of Information Technology in Our Daily Life IT in Education Driving force in educational reform Students have many opportunities to learn the basic computer skills to facilitate their learning. Multimedia learning centre (MMLC) in secondary school Classroom with a projector 1.1 Applications of Information Technology in Our Daily Life IT at Home Smart home technology Allows people to control household and other domestic appliances over the Internet
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QMT200 CHAPTER 3: PROBABILITY DISTRIBUTION 3.1 RANDOM VARIABLES AND PROBABILITY DISTRIBUTION Random variables is a quantity resulting from an experiment that‚ by chance‚ can assume different values. Examples of random variables are the number of defective light bulbs produced during the week and the heights of the students is a class. Two types of random variables are discrete random variables and continuous random variable. 3.2 DISCRETE RANDOM VARIABLE A random variable is called
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Chemistry In Our Daily Life Chemistry is a big part of your everyday life. You find chemistry in daily life in the foods you eat‚ the air you breathe‚ your soap‚ your emotions and literally every object you can see or touch. We live in a world of matter. From the food that sustains our lives to various objects that have built up our physical culture‚ everything is made up of matter. The human body itself is a mixture of matter of differing types. The humans who used materials obtained from nature
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An Essay on Mathematics in everyday life Introduction: Mathematics is one kind of science. We cannot do a single moment without mathematics. It has made our everyday life easy and comfortable. In official and personal life become paralyzed without mathematics. Functions: Different kinds of functions are performed by mathematics. It works with numbers‚ counting‚ and numerical operations. It is used to calculate something. It can be done both technically and manually. Large and complicated
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development‚ application‚ implementation‚ support or management of computer-based information systems". Several industries are associated with information technology‚ such as computer hardware‚ software‚ electronics‚semiconductors‚ internet‚ telecom equipment‚ e-commerce and computer services. The responsibilities of those working in the field include network administration‚ software development and installation‚ and the planning and management of an organization’s technology life cycle‚ by which
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