Please select a subject first
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In a double displacement reaction ______.
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Observe the following diagram and answer the questions.

- Construction of which equipment does the above diagram show?
- On which principle does this equipment work?
- According to which law the coil ABCD rotates?
- Write the law in your own words.
- Where is this equipment used?
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To study energy exchange between hot and cold objects, the system of both objects is isolated from the environment by keeping them inside ______.
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Match the columns:
| Column ‘A’ | Column ‘B’ |
| The SI unit of specific heat capacity | (a) Jkg−1°C−1 |
| (b) kg/m3 | |
| (c) calorie |
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Add potassium chromate (K2CrO4) into the solution of barium sulphate (BaSO4).
- What was the colour of the precipitate formed? Also, write the name of the precipitate.
- Write down the balanced equation for this reaction.
- Will you call this reaction a displacement reaction or a double displacement reaction? Why?
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The specific heat capacity of ______ is maximum.
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Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.

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Observe the following diagram and answer the questions given below:

Specific heat capacity of metals
- Which element has maximum specific heat capacity? Justify.
- Which element has minimum specific heat capacity? Justify.
- Define specific heat of object.
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______ is the functional group of carboxylic acid.
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Draw a neat diagram of a solenoid and name its various components.
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Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
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Fill in the blank:
The modern periodic table consists of ……………. periods.
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Fill in the blank:
The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.
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Corrosion can be prevented by using ……………. solution.
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Calculate the focal length of a corrective lens having power +2D.
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Define ‘redox reaction’. Give one example.
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The device used for producing electric current is called _________.
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Give the molecular formula of bleaching powder.
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Differentiate between resistances in series and parallel.
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