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Exam Q1. What type of reaction occurs when calcium oxide and water combine to form a single product, calcium hydroxide? A. Decomposition reaction B. Displacement reaction C. Combination reaction D. Double displacement reaction Q2. Quick lime is: A. Calcium oxide B. Calcium carbonate C. Calcium hydroxide D. Calcium chloride Q3. Quick lime is calcium oxide,

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TOTAL NUMBER OF QUESTIONS:50 Exam Q1. What helps us determine that a chemical reaction has taken place? A. Only a change in state B. Only a change in colour C. Change in state, colour, temperature, or evolution of gas D. Only evolution of gas Q2. What is the chemical change described when a magnesium ribbon

REPRODUCTION TOTAL NO. OF QUESTIONS:50 Exam Q1. What is binary fission? A. Division of one cell into two equal cells B. Fusion of two cells C. Formation of seeds D. Laying of eggs Q2. Which organism reproduces mainly by binary fission? A. Amoeba B. Cow C. Human D. Hen Q3. How many new cells are

REPRODUCTION-B TOTAL NO. OF QUESTIONS:50 Exam Q1. What is the first stage in the development of a baby after fertilisation? A. Embryo B. Zygote C. Foetus D. Infant Q2. What does the zygote develop into next? A. Seed B. Embryo C. Adult D. Spore Q3. What is an embryo? A. A fully grown baby B.

TOTAL NUMBER OF QUESTIONS: 50 Exam Q1. What is reproduction in living organisms? A. The process of making food B. The process of producing new individuals C. The process of breathing D. The process of moving Q2. Which mode of reproduction involves only one parent? A. Sexual reproduction B. Asexual reproduction C. Fertilisation D. Pollination

1. Which one of the following materials cannot be used to make a lens?(a) Water(b) Glass(c) Plastic(d) Clay Answer: (d) Clay 2. The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?(a) Between the principal focus and the centre

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