Please select a subject first
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What is electrolysis?
Concept: undefined >> undefined
Explain the reaction given in the figure.
Concept: undefined >> undefined
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Geeta observed a white trail at the back of aeroplane in a clear sky to answer the question from this incident given below.
- What will be the effect of relative humidity of the air surrounding the plane?
- What will be the effect of relative humidity of the air surrounding the plane is low?
- When the air is dry and humid?
Concept: undefined >> undefined
Explain:
Escape velocity on the moon is less than escape velocity on the earth.
Concept: undefined >> undefined
Write the names of India's satellite series and launchers?
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The functioning of the satellite launch vehicle is based on ______.
Concept: undefined >> undefined
Identify saturated and unsaturated hydrocarbons from the given structural formula:
| \[\begin{array}{cc} \phantom{}\ce{H}\phantom{..}\ce{H}\phantom{}\\ \phantom{}|\phantom{...}|\phantom{}\\ \ce{H-C-C-H}\\ \phantom{}|\phantom{...}|\phantom{}\\ \phantom{}\ce{H}\phantom{..}\ce{H}\phantom{} \end{array}\] |
\[\begin{array}{cc} \phantom{..}\ce{H}\phantom{........}\ce{H}\phantom{.}\\ \phantom{.}\backslash\phantom{......}/\phantom{}\\ \ce{C = C}\\ \phantom{}/\phantom{......}\backslash\phantom{}\\ \phantom{}\ce{H}\phantom{........}\ce{H}\phantom{} \end{array}\] |
| (1) | (2) |
Concept: undefined >> undefined
Draw electron dot structure for the following:
\[\begin{array}{cc}
\phantom{}\ce{H}\phantom{..}\ce{H}\phantom{}\\
\phantom{}|\phantom{...}|\phantom{}\\
\ce{H-C-C-H}\\
\phantom{}|\phantom{...}|\phantom{}\\
\phantom{}\ce{H}\phantom{..}\ce{H}\phantom{}
\end{array}\]
Concept: undefined >> undefined
Draw electron dot structure for the following:
\[\begin{array}{cc}
\phantom{..}\ce{H}\phantom{........}\ce{H}\phantom{.}\\
\phantom{.}\backslash\phantom{......}/\phantom{}\\
\ce{C = C}\\
\phantom{}/\phantom{......}\backslash\phantom{}\\
\phantom{}\ce{H}\phantom{........}\ce{H}\phantom{}
\end{array}\]
Concept: undefined >> undefined
How much is the relative humidity at the dew point?
Concept: undefined >> undefined
The reaction of calcium carbonate, with freshly prepared lime water, is shown below:
Answer the questions with the help of a diagram:
- What type of reaction does calcium carbonate undergoes?
- What change in colour is observed in lime?
- Write the chemical equation.
Concept: undefined >> undefined
Balance the following equation.
\[\ce{Calcium chloride + Sulphuric acid -> Calcium sulphate + Hydrogen chloride}\]
Concept: undefined >> undefined
Which of the following statement is incorrect with reference to the reaction of silver nitrate with sodium chloride?
Concept: undefined >> undefined
Match the column:
| Column ‘A’ | Column ‘B’ |
| Alkali metals | (a) Group 18 |
| Halogens | (b) Group 1 |
| Noble gases | (c) Group 17 |
Concept: undefined >> undefined
Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.
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Differentiate between: Absolute humidity and relative humidity.
Concept: undefined >> undefined
Complete the co-relation:
CuI2 : Brown : : AgCl : ______
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How do we feel about air in each of the following conditions?
- Relative humidity is more than 60%.
- Relative humidity is less than 60%.
Concept: undefined >> undefined
Complete the following reaction:
\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.
Concept: undefined >> undefined
Complete the following flow chart:
Concept: undefined >> undefined
