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Answer the following questions in reference to the figure below:

- Which relation is shown in the figure?
- What will happen if the mass of one of the objects is doubled?
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In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.
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Answer the following questions related to the modern periodic table.
Name the blocks with the groups that they consist of.
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Answer the following questions related to the modern periodic table.
Which block elements are known as transition elements?
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Answer the following questions related to the modern periodic table.
How are elements placed around the zig-zag line in the p-block of the periodic table?
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How much heat energy is necessary to raise the temperature of 10 kg of water from 50°C to 100°C?
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Observe the figure and answer the questions:

- State Newton's universal law of gravitation.
- If the distance between the two bodies is tripled, how will the gravitational force between them change?
- What will happen to gravitational force, if mass of one of the object is doubled?
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Define Electric power.
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Draw figure ‘Electric motor’ and working
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What is the Principle of an Electric motor?
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Name any four appliances where electric motor is used.
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Complete the following reaction, balance it and write the name of the products CuO + HCI →_________ + _________
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Name the product obtained when Plaster of Paris is mixed with water. State the use of the product. Give two uses of POP.
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When the substance ‘A’ is added to a solution of BaSO4, a yellow precipitate is formed.
- What do you think substance A is likely to be?
- Name the precipitate.
- Which type of reaction is this?
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State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
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1 calorie = _________ joule.
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If a bulb of 60W is connected across a source of 220V, find the current drawn by it.
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Explain the construction and working of an electric motor.
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Label the four parts of an electric motor

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